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1. The Simons Observatory: Design, Integration, and Testing of the Small Aperture Telescopes

Author

Nicholas Galitzki, Tran Tsan, Jake Spisak, Michael Randall, Max Silva-Feaver, Joseph Seibert, Jacob Lashner, Shunsuke Adachi, Sean M. Adkins, Thomas Alford, Kam Arnold, Peter C. Ashton, Jason E. Austermann, Carlo Baccigalupi, Andrew Bazarko, James A. Beall, Sanah Bhimani, Bryce Bixler, Gabriele Coppi, Lance Corbett, Kevin D. Crowley, Kevin T. Crowley, Samuel Day-Weiss, Mark J. Devlin, Simon Dicker, Brooke DiGia, Peter N. Dow, Cody J. Duell, Shannon M. Duff, Remington G. Gerras, John C. Groh, Jon E. Gudmundsson, Kathleen Harrington, Masaya Hasegawa, Erin Healy, Shawn W. Henderson, Johannes Hubmayr, Jeffrey Iuliano, Bradley R. Johnson, Brian Keating, Ben Keller, Kenji Kiuchi, Anna M. Kofman, Brian J. Koopman, Akito Kusaka, Adrian T. Lee, Richard A. Lew, Lawrence T. Lin, Michael J. Link, Tammy J. Lucas, Marius Lungu, Aashrita Mangu, Jeffrey J McMahon, Amber D. Miller, Jenna E. Moore, Magdy Morshed, Hironobu Nakata, Federico Nati, Laura B. Newburgh, David V. Nguyen, Michael D. Niemack, Lyman A. Page, Kana Sakaguri, Yuki Sakurai, Mayuri Sathyanarayana Rao, Lauren J. Saunders, Jordan E. Shroyer, Junna Sugiyama, Osamu Tajima, Atsuto Takeuchi, Refilwe Tanah Bua, Grant Teply, Tomoki Terasaki, Joel N. Ullom, Jeffrey L. Van Lanen, Eve M. Vavagiakis, Michael R Vissers, Liam Walters, Yuhan Wang, Zhilei Xu, Kyohei Yamada, and Kaiwen Zheng

Subjects
Cosmic microwave background radiation, Millimeter astronomy, Ground telescopes, Telescopes, Astrophysics, QB460-466
Abstract

The Simons Observatory (SO) is a cosmic microwave background survey experiment that includes small-aperture telescopes (SATs) observing from an altitude of 5200 m in the Atacama Desert in Chile. The SO SATs will cover six spectral bands between 27 and 280 GHz to search for primordial B-modes to a sensitivity of σ ( r ) = 0.002, with quantified systematic errors well below this value. Each SAT is a self-contained cryogenic telescope with a 35° field of view, 42 cm diameter optical aperture, 40 K half-wave plate, 1 K refractive optics, and 12,000 transition edge sensor detectors. We describe the nominal design of the SATs and present details about the integration and testing for one operating at 93 and 145 GHz.

Published
2024
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2. Development of the Characterization Methods Without Electrothermal Feedback for TES Bolometers for CMB Measurements

Author

Yume Nishinomiya, Akito Kusaka, Kenji Kiuchi, Tomoki Terasaki, Johannes Hubmayr, Adrian Lee, Heather McCarrick, Aritoki Suzuki, and Benjamin Westbrook

Subjects
FOS: Physical sciences, General Materials Science, Astrophysics - Instrumentation and Methods for Astrophysics, Condensed Matter Physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Atomic and Molecular Physics, and Optics
Abstract

Superconducting Transition-Edge Sensor (TES) bolometers are used for cosmic microwave background (CMB) observations. We used a testbed to evaluate the thermal performance of TES bolometers in regard to the saturation power Psat and intrinsic thermal time constant tau0. We developed an evaluation method that is complementary to methods with electrothermal feedback. In our method, the antenna termination resistor of the bolometer is directly biased with DC or AC electric power to simulate optical power, and the TES is biased with small power, which allows Psat and tau0 to be determined without contribution from the negative electrothermal feedback. We describe the method and results of the measurement using it. We evaluated Psat of five samples by applying DC power and confirmed the overall trend between Psat and the inverse leg length. We evaluated tau0 of the samples by applying DC plus AC power, and the measured value was reasonable in consideration of the expected values of other TES parameters. This evaluation method enables us to verify whether a TES has been fabricated with the designed values and to provide feedback for fabrication for future CMB observations., 7 pages, 6 figures, LTD19 Conference Proceedings

Published
2022

3. Simons Observatory Microwave SQUID Multiplexing Readout: Cryogenic RF Amplifier and Coaxial Chain Design

Author

Suzanne T. Staggs, Maria Salatino, Shuay-Pwu Patty Ho, Justin Mathewson, Trevor Sasse, Zhilei Xu, Jenna Moore, Philip Daniel Mauskopf, Aashrita Mangu, Nicholas Galitzki, Ningfeng Zhu, Shawn W. Henderson, Kam Arnold, Akito Kusaka, Bradley Dober, Maximiliano Silva-Feaver, Peter Ashton, Shannon M. Duff, Heather McCarrick, Eve M. Vavagiakis, Michael D. Niemack, Jonathan Hoh, Christopher Raum, Aamir Ali, Benjamin Westbrook, Joel N. Ullom, Grant Teply, Erin Healy, Jason R. Stevens, Adrian T. Lee, Cody J. Duell, Sara M. Simon, A. M. Kofman, Mayuri Sathyanarayana Rao, Joseph Seibert, and Robert Thornton

Subjects
Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Coaxial cable, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Multiplexing, 010305 fluids & plasmas, law.invention, law, biology.animal, 0103 physical sciences, General Materials Science, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Physics, Squid, biology, business.industry, RF power amplifier, Bolometer, Astrophysics::Instrumentation and Methods for Astrophysics, Instrumentation and Detectors (physics.ins-det), Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Optoelectronics, Transition edge sensor, Coaxial, Astrophysics - Instrumentation and Methods for Astrophysics, business, Microwave
Abstract

The Simons Observatory (SO) is an upcoming polarization-sensitive Cosmic Microwave Background (CMB) experiment on the Cerro Toco Plateau (Chile) with large overlap with other optical and infrared surveys (e.g., DESI, LSST, HSC). To enable the readout of \bigO(10,000) detectors in each of the four telescopes of SO, we will employ the microwave SQUID multiplexing technology. With a targeted multiplexing factor of \bigO{(1,000)}, microwave SQUID multiplexing has never been deployed on the scale needed for SO. Here we present the design of the cryogenic coaxial cable and RF component chain that connects room temperature readout electronics to superconducting resonators that are coupled to Transition Edge Sensor bolometers operating at sub-Kelvin temperatures. We describe design considerations including cryogenic RF component selection, system linearity, noise, and thermal power dissipation., 10 pages, 2 figures

Published
2020

4. Simons Observatory Small Aperture Telescope overview

Author

Heather McCarrick, Osamu Tajima, Yuji Chinone, Jon E. Gudmundsson, Nicholas Galitzki, Federico Nati, Gabriele Coppi, Andrew Bazako, Joseph Seibert, Kevin D. Crowley, Jason E. Austermann, Masaya Hasegawa, Grant Teply, Jacob Spisak, Tran Tsan, Bradley R. Johnson, Edward J. Wollack, Giulio Fabbian, Brian Keating, Simon Dicker, Mario Zannoni, Mayuri Sathyanarayana Rao, Yume Nishinomiya, Frederick Matsuda, Kam Arnold, Shunsuke Adachi, Ningfeng Zhu, Charles A. Hill, James A. Beall, Tomoki Terasaki, D. Kaneko, Akito Kusaka, Kevin T. Crowley, Bradley Dober, Samantha Walker, Lyman A. Page, Adrian T. Lee, Kenji Kiuchi, Kathleen Harrington, Shuay-Pwu Patty Ho, Nobuhiko Katayama, Makoto Hattori, Peter Ashton, Johannes Hubmayr, Joseph E. Golec, Kana Sakaguri, Masaaki Murata, Shannon M. Duff, Kyohei Yamada, Zhilei Xu, Yuki Sakurai, Jack Lashner, Christian L. Reichardt, Aamir Ali, Marshall, HK, Spyromilio, J, Usuda, T, Kiuchi, K, Adachi, S, Ali, A, Arnold, K, Ashton, P, Austermann, J, Bazako, A, Beall, J, Chinone, Y, Coppi, G, Crowley, K, Dicker, S, Dober, B, Duff, S, Fabbian, G, Galitzki, N, Golec, J, Gudmundsson, J, Harrington, K, Hasegawa, M, Hattori, M, Hill, C, Ho, S, Hubmayr, J, Johnson, B, Kaneko, D, Katayama, N, Keating, B, Kusaka, A, Lashner, J, Lee, A, Matsuda, F, Mccarrick, H, Murata, M, Nati, F, Nishinomiya, Y, Page, L, Rao, M, Reichardt, C, Sakaguri, K, Sakurai, Y, Sibert, J, Spisak, J, Tajima, O, Teply, G, Terasaki, T, Tsan, T, Walker, S, Wollack, E, Xu, Z, Yamada, K, Zannoni, M, and Zhu, N

Subjects
Aperture, Cosmic microwave background, FOS: Physical sciences, Field of view, Astrophysics::Cosmology and Extragalactic Astrophysics, CMB, law.invention, Telescope, FIS/05 - ASTRONOMIA E ASTROFISICA, Optics, law, Observatory, Cosmic Microwave Background, Instrumentation and Methods for Astrophysics (astro-ph.IM), Physics, business.industry, Gravitational wave, Stray light, Bolometer, Astrophysics::Instrumentation and Methods for Astrophysics, Radio, Primordial gravitational wave, B-mode, Ground-Based Telescope, business, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The Simons Observatory (SO) is a cosmic microwave background (CMB) experiment from the Atacama Desert in Chile comprising three small-aperture telescopes (SATs) and one large-aperture telescope (LAT). In total, SO will field over 60,000 transition-edge sensor (TES) bolometers in six spectral bands centered between 27 and 280 GHz in order to achieve the sensitivity necessary to measure or constrain numerous cosmological quantities. In this work, we focus on the SATs which are optimized to search for primordial gravitational waves that are detected as parity-odd polarization patterns called a B-modes on degree scales in the CMB. Each SAT employs a single optics tube with TES arrays operating at 100 mK. The high throughput optics system has a 42 cm aperture and a 35-degree field of view coupled to a 36 cm diameter focal plane. The optics consist of three metamaterial anti-re ection coated silicon lenses. Cryogenic ring baffles with engineered blackbody absorbers are installed in the optics tube to minimize the stray light. The entire optics tube is cooled to 1 K. A cryogenic continuously rotating half-wave plate near the sky side of the aperture stop helps to minimize the effect of atmospheric uctuations. The telescope warm baffling consists of a forebaffle, an elevation stage mounted co-moving shield, and a fixed ground shield that together control the far side-lobes and mitigates ground-synchronous systematics. We present the status of the SAT development., Comment: 8 pages, 6 figures

Published
2021
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5. A cryogenic continuously rotating half-wave plate mechanism for the POLARBEAR-2b cosmic microwave background receiver

Author

Tomotake Matsumura, Peter Ashton, Yuki Sakurai, S. Ganjam, Kam Arnold, Charles A. Hill, B. Bixler, Y. Zhou, Frederick Matsuda, Adrian T. Lee, Tylor Adkins, R. Tat, P. Barton, and Akito Kusaka

Subjects
Cryostat, Electric motor, Cosmic microwave background, FOS: Physical sciences, 7. Clean energy, 01 natural sciences, Waveplate, Radio spectrum, 010305 fluids & plasmas, Optics, Engineering, 0103 physical sciences, Instrumentation, Instrumentation and Methods for Astrophysics (astro-ph.IM), Applied Physics, 010302 applied physics, Physics, Rotary encoder, business.industry, Detector, Polarization (waves), Physical Sciences, Chemical Sciences, business, Astrophysics - Instrumentation and Methods for Astrophysics, astro-ph.IM
Abstract

We present the design and laboratory evaluation of a cryogenic continuously rotating half-wave plate (CHWP) for the POLARBEAR-2b (PB-2b) cosmic microwave background (CMB) receiver, the second installment of the Simons Array. PB-2b will observe at 5,200 m elevation in the Atacama Desert of Chile in two frequency bands centered at 90 and 150 GHz. In order to suppress atmospheric 1/f noise and mitigate systematic effects that arise when differencing orthogonal detectors, PB-2b modulates linear sky polarization using a CHWP rotating at 2 Hz. The CHWP has a 440 mm clear aperture diameter and is cooled to $\approx$ 50 K in the PB-2b receiver cryostat. It consists of a low-friction superconducting magnetic bearing (SMB) and a low-torque synchronous electromagnetic motor, which together dissipate < 2 W. During cooldown, a grip-and-release mechanism centers the rotor to < 0.5 mm, and during continuous rotation, an incremental optical encoder measures the rotor angle with a noise level of 0.1 $\mathrm{��rad / \sqrt{Hz}}$. We discuss the experimental requirements for the PB-2b CHWP, the designs of its various subsystems, and the results of its evaluation in the laboratory. The presented CHWP has been deployed to Chile and is expected to see first light on PB-2b in 2020 or 2021., PREPRINT. Submitted to Review of Scientific Instruments, September 2020. v2 updates refs 41-42

Published
2020

6. Results of gravitational lensing and primordial gravitational waves from the POLARBEAR experiment

Author

Peter A. R. Ade, Davide Poletti, C. Verges, Shunsuke Adachi, Kam Arnold, Yuji Chinone, A. Suzuki, Yuto Minami, Chang Feng, J. Peloton, Nathan Whitehorn, Oliver Jeong, N. W. Halverson, Yuki Inoue, T. Hamada, Akito Kusaka, Y. Zhou, A. Zahn, A. Cukierman, M. Aguilar, Carole Tucker, D. Beck, Nicoletta Krachmalnicoff, Rolando Dünner, Brian Keating, Paul L. Richards, Stephen M. Feeney, J. C. Groh, Julian Borrill, C. Tsai, Joshua Montgomery, Darcy Barron, Theodore Kisner, R. Stompor, G. Hall, D. Boettger, Tucker Elleflot, Josquin Errard, Frederick Matsuda, L. N. Lowry, D. Leon, Takayuki Tomaru, Reijo Keskitalo, Benjamin Westbrook, M. Navaroli, D. Kaneko, K. Cheung, Osamu Tajima, A. T. P. Pham, Eric V. Linder, Giulio Fabbian, A. J. Gilbert, L. Howe, Neil Goeckner-Wald, H. El-Bouhargani, Max Silva-Feaver, Hans P. Paar, M. A. Dobbs, S. Takatori, Federico Bianchini, Colin Ross, Christian L. Reichardt, John Groh, Praween Siritanasak, Julien Carron, Tomotake Matsumura, T. Fujino, Y. Akiba, H. Nishino, G. Jaehnig, Giuseppe Puglisi, Charles A. Hill, D. Tanabe, Andrew H. Jaffe, Masashi Hazumi, Nicholas Galitzki, Blake D. Sherwin, S. Kikuchi, Carlo Baccigalupi, E. M. Leitch, S. Beckman, N. Katayama, Grant Teply, A. Ducout, Aashrita Mangu, M. LeJeune, Adrian T. Lee, Nathan Stebor, Masaya Hasegawa, S. Takakura, Y. Segawa, Scott Chapman, Kevin T. Crowley, Chinone, Y, Adachi, S, Ade, P, Aguilar, M, Akiba, Y, Arnold, K, Baccigalupi, C, Barron, D, Beck, D, Beckman, S, Bianchini, F, Boettger, D, Borrill, J, Elbouhargani, H, Carron, J, Chapman, S, Cheung, K, Crowley, K, Cukierman, A, Dunner, R, Dobbs, M, Ducout, A, Elleflot, T, Errard, J, Fabbian, G, Feeney, S, Feng, C, Fujino, T, Galitzki, N, Gilbert, A, Goeckner-Wald, N, Groh, J, Hall, G, Halverson, N, Hamada, T, Hasegawa, M, Hazumi, M, Hill, C, Howe, L, Inoue, Y, Jaehnig, G, Jaffe, A, Jeong, O, Lejeune, M, Kaneko, D, Katayama, N, Keating, B, Keskitalo, R, Kikuchi, S, Kisner, T, Krachmalnicoff, N, Kusaka, A, Lee, A, Leitch, E, Leon, D, Linder, E, Lowry, L, Mangu, A, Matsuda, F, Matsumura, T, Minami, Y, Montgomery, J, Navaroli, M, Nishino, H, Paar, H, Peloton, J, Pham, A, Poletti, D, Puglisi, G, Reichardt, C, Richards, P, Ross, C, Segawa, Y, Sherwin, B, Silva-Feaver, M, Siritanasak, P, Stebor, N, Stompor, R, Suzuki, A, Tajima, O, Takakura, S, Takatori, S, Tanabe, D, Teply, G, Tomaru, T, Tsai, C, Tucker, C, Verges, C, Westbrook, B, Whitehorn, N, Zahn, A, Zhou, Y, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), POLARBEAR, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)

Subjects
History, satellite: Planck, Cosmic microwave background, gravitational lensing, cosmic background radiation: polarization, detector: noise, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Gravity waves, power spectrum, 01 natural sciences, Education, Primary mirror, symbols.namesake, Settore FIS/05 - Astronomia e Astrofisica, gravitation: lens, Polarization, 0103 physical sciences, Planck, mirror, 010303 astronomy & astrophysics, Physics, COSMIC cancer database, 010308 nuclear & particles physics, Gravitational wave, Settore FIS/05, POLARBEAR experiment, Gravitational effects, gravitational radiation: primordial, Astrophysics::Instrumentation and Methods for Astrophysics, Polarization (waves), Galaxy, Computer Science Applications, Gravitational lens, B-mode, symbols, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], galaxy
Abstract

POLARBEAR is a Cosmic Microwave Background radiation (CMB) polarization experiment that is located in the Atacama Desert in Chile. The scientific goals of the experiment are to characterize the B-mode signal from gravitational lensing, as well as to search for B-mode signals created by primordial gravitational waves (PGWs). Polarbear started observations in 2012 and has published a series of results. These include the first measurement of a nonzero B-mode angular auto-power spectrum at sub-degree scales where the dominant signal is gravitational lensing of the CMB. In addition, we have achieved the first measurement of crosscorrelation between the lensing potential, which was reconstructed from the CMB polarization data alone by Polarbear, and the cosmic shear field from galaxy shapes by the Subaru Hyper Suprime-Cam (HSC) survey. In 2014, we installed a continuously rotating half-wave plate (CRHWP) at the focus of the primary mirror to search for PGWs and demonstrated the control of low-frequency noise. We have found that the low-frequency B-mode power in the combined dataset with the Planck high-frequency maps is consistent with Galactic dust foreground, thus placing an upper limit on the tensor-to-scalar ratio of r < 0.90 at the 95% confidence level after marginalizing over the foregrounds.

Published
2020

7. The cross correlation of the ABS and ACT maps

Author

Johannes Hubmayr, Mathew S. Madhavacheril, Shannon M. Duff, Sigurd Naess, Emilie Storer, Lucas Parker, Edward J. Wollack, Jonathan Sievers, Suzanne T. Staggs, Akito Kusaka, Patricio A. Gallardo, Thibaut Louis, Lyman A. Page, Sara M. Simon, Maria Salatino, Simone Aiola, Joseph W. Fowler, Joanna Dunkley, David Alonso, Thomas Essinger-Hileman, John W. Appel, Jeff McMahon, Kevin T. Crowley, Bruce Partridge, Shuay-Pwu Patty Ho, Michael D. Niemack, Cristóbal Sifón, J. Richard Bond, Zack Li, Erminia Calabrese, Steve K. Choi, Federico Nati, Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Li, Z, Naess, S, Aiola, S, Alonso, D, Appel, J, Bond, J, Calabrese, E, Choi, S, Crowley, K, Essinger-Hileman, T, Duff, S, Dunkley, J, Fowler, J, Gallardo, P, Ho, S, Hubmayr, J, Kusaka, A, Louis, T, Madhavacheril, M, Mcmahon, J, Nati, F, Niemack, M, Page, L, Parker, L, Partridge, B, Salatino, M, Sievers, J, Sifon, C, Simon, S, Staggs, S, Storer, E, Wollack, E, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Cosmic microwave background, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Cosmology, Spectral line, symbols.namesake, 0103 physical sciences, Planck, 010306 general physics, 010303 astronomy & astrophysics, CMBR polarization, Physics, Cross-correlation, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Polarization (waves), Atacama Cosmology Telescope, symbols, CMBR experiment, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Noise (radio), CMBR detector, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

One of the most important checks for systematic errors in CMB studies is the cross correlation of maps made by independent experiments. In this paper we report on the cross correlation between maps from the Atacama B-mode Search (ABS) and Atacama Cosmology Telescope (ACT) experiments in both temperature and polarization. These completely different measurements have a clear correlation with each other and with the Planck satellite in both the EE and TE spectra at $\ell, Comment: 7 pages, 5 figures. For an interactive demonstration of the methods, see https://colab.research.google.com/drive/1CnMGLn-J3pySv8A9ffNWDSlXlJWMrp2W

Published
2020

8. Small Aperture Telescopes for the Simons Observatory

Author

Osamu Tajima, Johannes Hubmayr, Suzanne T. Staggs, Aamir Ali, Bejamin Westbrook, Kam Arnold, Trevor Sasse, Charles A. Hill, Frederick Matsuda, Tran Tsan, Kenji Kiuchi, Grant Teply, Andrew Bazarko, Federico Nati, Yuji Chinone, Joseph Seibert, Carlos Sierra, Nicholas Galitzki, Zhilei Xu, Peter Ashton, Ningfeng Zhu, Erin Healy, Haruki Nishino, Sara M. Simon, Shannon M. Duff, Kevin D. Crowley, Mario Zannoni, Edward J. Wollack, Jacob Spisak, Michael D. Niemack, John Orlowski-Scherer, Christopher Raum, Lance Corbett, Adrian T. Lee, Aashrita Mangu, Kathleen Harrington, Michael Ludlam, Yuki Sakurai, Shunsuke Adachi, Gabriele Coppi, Maria Salatino, Neil Goeckner-Wald, Mayuri Sathyanarayana Rao, Maximiliano Silva-Feaver, Mark J. Devlin, Christopher G. Ellis, Heather McCarrick, Kevin T. Crowley, Shuay-Pwu Patty Ho, Akito Kusaka, Brian Keating, Simon Dicker, Ali, A, Adachi, S, Arnold, K, Ashton, P, Bazarko, A, Chinone, Y, Coppi, G, Corbett, L, Crowley, K, Devlin, M, Dicker, S, Duff, S, Ellis, C, Galitzki, N, Goeckner-Wald, N, Harrington, K, Healy, E, Hill, C, Ho, S, Hubmayr, J, Keating, B, Kiuchi, K, Kusaka, A, Lee, A, Ludlam, M, Mangu, A, Matsuda, F, Mccarrick, H, Nati, F, Niemack, M, Nishino, H, Orlowski-Scherer, J, Sathyanarayana Rao, M, Raum, C, Sakurai, Y, Salatino, M, Sasse, T, Seibert, J, Sierra, C, Silva-Feaver, M, Spisak, J, Simon, S, Staggs, S, Tajima, O, Teply, G, Tsan, T, Wollack, E, Westbrook, B, Xu, Z, Zannoni, M, and Zhu, N

Subjects
Small aperture telescope, TES, Refractor, Simons Observatory, Cosmic microwave background, CMB, Inflation, Cosmology, media_common.quotation_subject, Cosmic microwave background, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Cosmology, Radio spectrum, 010305 fluids & plasmas, law.invention, Telescope, FIS/05 - ASTRONOMIA E ASTROFISICA, law, Observatory, 0103 physical sciences, General Materials Science, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Astrophysics::Galaxy Astrophysics, media_common, Physics, Astrophysics::Instrumentation and Methods for Astrophysics, Condensed Matter Physics, Polarization (waves), Atomic and Molecular Physics, and Optics, Sky, Refracting telescope, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The Simons Observatory (SO) is an upcoming cosmic microwave background (CMB) experiment located on Cerro Toco, Chile, that will map the microwave sky in temperature and polarization in six frequency bands spanning 27 to 285 GHz. SO will consist of one 6-m large aperture telescope fielding $$\sim$$ 30,000 detectors and an array of three 0.42-m small aperture telescopes (SATs) fielding an additional 30,000 detectors. This synergy will allow for the extremely sensitive characterization of the CMB over angular scales ranging from an arcmin to tens of degrees, enabling a wide range of scientific output. Here we focus on the SATs targeting degree angular scales with successive dichroic instruments observing at mid-frequency (MF: 93/145 GHz), ultra-high-frequency (UHF: 225/285 GHz), and low-frequency (LF: 27/39 GHz). The three SATs will be able to map $$\sim$$ 10% of the sky to a noise level of $$\sim$$ $$2\,\upmu {\hbox {K}}$$ -arcmin when combining 93 and 145 GHz. The multiple frequency bands will allow the CMB to be separated from galactic foregrounds (primarily synchrotron and dust), with the primary science goal of characterizing the primordial tensor-to-scalar ratio, r, at a target level of $$\sigma (r) \approx 0.003$$ .

Published
2020

9. A measurement of the CMB E-mode angular power spectrum at subdegree scales from 670 square degrees of POLARBEAR data

Author

Osamu Tajima, T. Fujino, Andrew H. Jaffe, Scott Chapman, Eric V. Linder, S. Kikuchi, N. Katayama, D. Leon, Masashi Hazumi, Oliver Jeong, D. Tanabe, Grant Teply, Nicholas Galitzki, Tucker Elleflot, S. Takakura, Christian L. Reichardt, Praween Siritanasak, Josquin Errard, Akito Kusaka, Giulio Fabbian, John Groh, Brian Keating, Federico Bianchini, Ben Westbrook, M. A. O. Aguilar Faúndez, Shunsuke Adachi, Ted Kisner, K. Cheung, Adrian T. Lee, Y. Zhou, C. Tsai, Neil Goeckner-Wald, Frederick Matsuda, Tomotake Matsumura, D. Beck, Kam Arnold, Masaya Hasegawa, S. Takatori, Darcy Barron, Carlo Baccigalupi, L. N. Lowry, Davide Poletti, Clara Vergès, Kevin D. Crowley, G. Hall, M. Navaroli, Haruki Nishino, Yuto Minami, Haruaki Hirose, A. T. P. Pham, Chang Feng, Yuji Chinone, H. El Bouhargani, Y. Segawa, M. A. Dobbs, Daisuke Kaneko, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), APC - Cosmologie, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Polarbear, Adachi, S, Aguilar Faundez, M, Arnold, K, Baccigalupi, C, Barron, D, Beck, D, Bianchini, F, Chapman, S, Cheung, K, Chinone, Y, Crowley, K, Dobbs, M, El Bouhargani, H, Elleflot, T, Errard, J, Fabbian, G, Feng, C, Fujino, T, Galitzki, N, Goeckner-Wald, N, Groh, J, Hall, G, Hasegawa, M, Hazumi, M, Hirose, H, Jaffe, A, Jeong, O, Kaneko, D, Katayama, N, Keating, B, Kikuchi, S, Kisner, T, Kusaka, A, Lee, A, Leon, D, Linder, E, Lowry, L, Matsuda, F, Matsumura, T, Minami, Y, Navaroli, M, Nishino, H, Pham, A, Poletti, D, Reichardt, C, Segawa, Y, Siritanasak, P, Tajima, O, Takakura, S, Takatori, S, Tanabe, D, Teply, G, Tsai, C, Verges, C, Westbrook, B, Zhou, Y, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)

Subjects
cosmological model, 010504 meteorology & atmospheric sciences, Cosmic microwave background, cosmic background radiation: polarization, detector: noise, Astrophysics, cosmic background radiation, 01 natural sciences, Physical Chemistry, Atomic, expansion: multipole, Cosmology, Particle and Plasma Physics, Cosmic microwave background radiation, Big Bang nucleosynthesis, polarbear data, polarization: power spectrum, 010303 astronomy & astrophysics, helium: primordial, Physics, Hubble constant, symbols, astro-ph.CO, power spectrum: angular dependence, Astronomical and Space Sciences, Physical Chemistry (incl. Structural), Astrophysics - Cosmology and Nongalactic Astrophysics, satellite: Planck, Cosmology and Nongalactic Astrophysics (astro-ph.CO), nucleosynthesis: big bang, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astronomy & Astrophysics, symbols.namesake, Settore FIS/05 - Astronomia e Astrofisica, statistical analysis, Nucleosynthesis, 0103 physical sciences, Nuclear, Planck, cosmic background radiation: power spectrum, 0105 earth and related environmental sciences, Spectral density, Molecular, Astronomy and Astrophysics, Abundance of the chemical elements, detector: sensitivity, Space and Planetary Science, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Hubble's law
Abstract

We report a measurement of the E-mode polarization power spectrum of the cosmic microwave background (CMB) using 150 GHz data taken from July 2014 to December 2016 with the POLARBEAR experiment. We reach an effective polarization map noise level of $32\,\mu\mathrm{K}$-$\mathrm{arcmin}$ across an observation area of 670 square degrees. We measure the EE power spectrum over the angular multipole range $500 \leq \ell, Comment: 15 pages, 5 figures, submitted to ApJ

Published
2020
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10. Commercialization of Micro-fabrication of Antenna-Coupled Transition Edge Sensor Bolometer Detectors for Studies of the Cosmic Microwave Background

Author

Aritoki Suzuki, Nicholas P. Palaio, Natalie A. Roe, Maurice Garcia-Sciveres, Adrian T. Lee, Chris Bebek, Stephen Holland, Leo Steinmetz, and Akito Kusaka

Subjects
General Physics, Fabrication, Physics::Instrumentation and Detectors, Classical Physics, Cosmic microwave background, Micro-fabrication, Polarimetry, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Dichroic glass, 01 natural sciences, law.invention, Optics, law, Polarization, 0103 physical sciences, General Materials Science, Wafer, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Mathematical Physics, Physics, 010308 nuclear & particles physics, business.industry, Detector, Bolometer, Astrophysics::Instrumentation and Methods for Astrophysics, Condensed Matter Physics, Inflation, Atomic and Molecular Physics, and Optics, TES bolometer, B-mode, Transition edge sensor, Astrophysics - Instrumentation and Methods for Astrophysics, business, astro-ph.IM
Abstract

We report on the development of commercially fabricated multi-chroic antenna coupled Transition Edge Sensor (TES) bolometer arrays for Cosmic Microwave Background (CMB) polarimetry experiments. CMB polarimetry experiments have deployed instruments in stages. Stage-II experiments deployed with O(1,000) detectors and reported successful detection of B-mode (divergent free) polarization pattern in the CMB. Stage-III experiments have recently started observing with O(10,000) detectors with wider frequency coverage. A concept for a Stage-IV experiment, CMB-S4, is emerging to make a definitive measurement of CMB polarization from the ground with O(400,000) detectors. The orders of magnitude increase in detector count for CMB-S4 requires a new approach in detector fabrication to increase fabrication throughput.and reduce cost. We report on collaborative efforts with two commercial micro-fabrication foundries to fabricate antenna coupled TES bolometer detectors. The detector design is based on the sinuous antenna coupled dichroic detector from the POLARBEAR-2 experiment. The TES bolometers showed the expected I-V response and the RF performance agrees with simulation. We will discuss the motivation, design consideration, fabrication processes, test results, and how industrial detector fabrication could be a path to fabricate hundreds of detector wafers for future CMB polarimetry experiments., 5 pages 2 figures Journal of Low Temperature Physics - Special Edition - LTD17 Proceedings

Published
2018

11. The Simons Observatory Microwave SQUID Multiplexing Detector Module Design

Author

Shannon M. Duff, Sarah Marie Bruno, Kaiwen Zheng, Jason E. Austermann, Heather McCarrick, Suzanne T. Staggs, Zachary Atkins, Sara M. Simon, Michael D. Niemack, Megan Gralla, D. Dutcher, Johannes Hubmayr, John A. B. Mates, Bradley R. Johnson, Zachary B. Huber, Leila R. Vale, Nicholas F. Cothard, Jake Connors, A. M. Kofman, Steve K. Choi, Kam Arnold, Nicholas Galitzki, Tammy J. Lucas, Jeff Van Lanen, Kevin D. Crowley, Shawn W. Henderson, Aritoki Suzuki, Yuhan Wang, C. Yu, Edward D. Young, Simon Dicker, Edward J. Wollack, Akito Kusaka, Joel N. Ullom, Bradley Dober, Erin Healy, Zeeshan Ahmed, John Orlowski-Scherer, Adrian T. Lee, Jeffrey Iuliano, Cody J. Duell, Yaqiong Li, Joseph Seibert, Robert Thornton, Jon E. Gudmundsson, Josef Frisch, Ningfeng Zhu, Tomoki Terasaki, Zhilei Xu, Jack Lashner, Tanay Bhandarkar, James A. Beall, Michael J. Link, Shuay-Pwu Patty Ho, Eve M. Vavagiakis, Maximiliano Silva-Feaver, Michael R. Vissers, Gene C. Hilton, Marius Lungu, and Jeff McMahon

Subjects
Physics, Squid, Cosmology and Nongalactic Astrophysics (astro-ph.CO), biology, Physics::Instrumentation and Detectors, business.industry, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Multiplexing, Optics, Space and Planetary Science, Observatory, biology.animal, Astrophysics - Instrumentation and Methods for Astrophysics, business, Instrumentation and Methods for Astrophysics (astro-ph.IM), Microwave, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Advances in cosmic microwave background (CMB) science depend on increasing the number of sensitive detectors observing the sky. New instruments deploy large arrays of superconducting transition-edge sensor (TES) bolometers tiled densely into ever larger focal planes. High multiplexing factors reduce the thermal loading on the cryogenic receivers and simplify their design. We present the design of focal-plane modules with an order of magnitude higher multiplexing factor than has previously been achieved with TES bolometers. We focus on the novel cold readout component, which employs microwave SQUID multiplexing ($��$mux). Simons Observatory will use 49 modules containing 60,000 bolometers to make exquisitely sensitive measurements of the CMB. We validate the focal-plane module design, presenting measurements of the readout component with and without a prototype detector array of 1728 polarization-sensitive bolometers coupled to feedhorns. The readout component achieves a $95\%$ yield and a 910 multiplexing factor. The median white noise of each readout channel is 65 $\mathrm{pA/\sqrt{Hz}}$. This impacts the projected SO mapping speed by $< 8\%$, which is less than is assumed in the sensitivity projections. The results validate the full functionality of the module. We discuss the measured performance in the context of SO science requirements, which are exceeded., Accepted to The Astrophysical Journal

Published
2021

12. Internal delensing of cosmic microwave background polarization B-modes with the POLARBEAR experiment

Author

Kam Arnold, Grant Teply, D. Leon, R. Stompor, Neil Goeckner-Wald, Yuji Chinone, D. Beck, J. Borrill, H. El Bouhargani, Kevin T. Crowley, S. Takatori, Toshiya Namikawa, M. A. O. Aguilar Faúndez, Max Silva-Feaver, M. Navaroli, Christian L. Reichardt, J. Peloton, Tucker Elleflot, Josquin Errard, Darcy Barron, Davide Poletti, Osamu Tajima, K. Cheung, C. Verges, L. N. Lowry, N. Katayama, Federico Bianchini, Eric V. Linder, Giulio Fabbian, Praween Siritanasak, Yuto Minami, Brian Keating, Julien Carron, L. Howe, Shunsuke Adachi, Tomotake Matsumura, A. T. P. Pham, Y. Segawa, Carlo Baccigalupi, Aamir Ali, Akito Kusaka, Masaya Hasegawa, Frederick Matsuda, Aaron Lee, Chang Feng, Giuseppe Puglisi, Charles A. Hill, T. Fujino, Y. Akiba, D. Tanabe, S. Kikuchi, H. Nishino, Masashi Hazumi, Blake D. Sherwin, AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), POLARBEAR, Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Adachi, S, Aguilar Faundez, M, Akiba, Y, Ali, A, Arnold, K, Baccigalupi, C, Barron, D, Beck, D, Bianchini, F, Borrill, J, Carron, J, Cheung, K, Chinone, Y, Crowley, K, El Bouhargani, H, Elleflot, T, Errard, J, Fabbian, G, Feng, C, Fujino, T, Goeckner-Wald, N, Hasegawa, M, Hazumi, M, Hill, C, Howe, L, Katayama, N, Keating, B, Kikuchi, S, Kusaka, A, Lee, A, Leon, D, Linder, E, Lowry, L, Matsuda, F, Matsumura, T, Minami, Y, Namikawa, T, Navaroli, M, Nishino, H, Peloton, J, Pham, A, Poletti, D, Puglisi, G, Reichardt, C, Segawa, Y, Sherwin, B, Silva-Feaver, M, Siritanasak, P, Stompor, R, Tajima, O, Takatori, S, Tanabe, D, Teply, G, Verges, C, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), APC - Cosmologie, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Cosmic Microwave Background Polarization, Cosmic microwave background, FOS: Physical sciences, General Physics and Astronomy, cosmic background radiation: polarization, General Relativity and Quantum Cosmology (gr-qc), Gravitation and Astrophysics, 01 natural sciences, General Relativity and Quantum Cosmology, B-mode: primordial, Settore FIS/05 - Astronomia e Astrofisica, QB0980, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), QC, QB, Physics, Settore FIS/05, Polarization (waves), inflation: model, Computational physics, POLARBEAR Experiment, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], Instrumentation and Methods for Astrophysics, Variance reduction, Cosmology and Nongalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Using only cosmic microwave background polarization data from the POLARBEAR experiment, we measure $B$-mode polarization delensing on subdegree scales at more than $5\sigma$ significance. We achieve a 14% $B$-mode power variance reduction, the highest to date for internal delensing, and improve this result to 2% by applying for the first time an iterative maximum a posteriori delensing method. Our analysis demonstrates the capability of internal delensing as a means of improving constraints on inflationary models, paving the way for the optimal analysis of next-generation primordial $B$-mode experiments., Comment: Matches version published in Physical Review Letters

Published
2019

13. A Measurement of the Degree Scale CMB B-mode Angular Power Spectrum with POLARBEAR

Author

Julien Carron, M. A. Dobbs, C. Tsai, Dominic Beck, D. Leon, Ted Kisner, Aashrita Mangu, D. Boettger, Christian L. Reichardt, A. T. P. Pham, Kam Arnold, Akito Kusaka, Nicoletta Krachmalnicoff, T. Hamada, John Groh, S. Beckman, Josquin Errard, Ben Westbrook, Nathan Stebor, Neil Goeckner-Wald, Reijo Keskitalo, Daisuke Kaneko, Greg Jaehnig, Kevin T. Crowley, S. Takatori, Masaya Hasegawa, D. Tanabe, Tucker Elleflot, Giulio Fabbian, L. Howe, A. Cukierman, T. Fujino, Y. Zhou, S. Takakura, Eric V. Linder, Julian Borrill, N. Katayama, Yuki Inoue, Davide Poletti, Praween Siritanasak, Haruki Nishino, Yuto Minami, Yuji Chinone, Y. Segawa, H. El Bouhargani, Osamu Tajima, Aritoki Suzuki, N. W. Halverson, Darcy Barron, Masashi Hazumi, L. N. Lowry, G. Hall, Frederick Matsuda, Federico Bianchini, Scott Chapman, M. Navaroli, R. Stompor, Nicholas Galitzki, Clara Vergès, Maximiliano Silva-Feaver, Oliver Jeong, M. A. O. Aguilar Faúndez, Grant Teply, Brian Keating, Shunsuke Adachi, S. Kikuchi, K. Cheung, Adrian T. Lee, Giuseppe Puglisi, Charles A. Hill, Chang Feng, C. Baccigalupi, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), POLARBEAR, Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Adachi, S, Aguilar Faundez, M, Arnold, K, Baccigalupi, C, Barron, D, Beck, D, Beckman, S, Bianchini, F, Boettger, D, Borrill, J, Carron, J, Chapman, S, Cheung, K, Chinone, Y, Crowley, K, Cukierman, A, Dobbs, M, Bouhargani, H, Elleflot, T, Errard, J, Fabbian, G, Feng, C, Fujino, T, Galitzki, N, Goeckner-Wald, N, Groh, J, Hall, G, Halverson, N, Hamada, T, Hasegawa, M, Hazumi, M, Hill, C, Howe, L, Inoue, Y, Jaehnig, G, Jeong, O, Kaneko, D, Katayama, N, Keating, B, Keskitalo, R, Kikuchi, S, Kisner, T, Krachmalnicoff, N, Kusaka, A, Lee, A, Leon, D, Linder, E, Lowry, L, Mangu, A, Matsuda, F, Minami, Y, Navaroli, M, Nishino, H, Pham, A, Poletti, D, Puglisi, G, Reichardt, C, Segawa, Y, Silva-Feaver, M, Siritanasak, P, Stebor, N, Stompor, R, Suzuki, A, Tajima, O, Takakura, S, Takatori, S, Tanabe, D, Teply, G, Tsai, C, Verges, C, Westbrook, B, Zhou, Y, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), APC - Cosmologie, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Cosmic microwave background radiation, Cosmic inflation, Cosmology, Observational cosmology, cosmological model, 010504 meteorology & atmospheric sciences, Cosmic microwave background, Astrophysics, 01 natural sciences, Atomic, Physical Chemistry, Spectral line, thermal, Cosmic microwave background radiationCosmic inflationCosmologyObservational cosmology, Particle and Plasma Physics, polarization: power spectrum, 010303 astronomy & astrophysics, media_common, Physics, Settore FIS/05, Polarization (waves), symbols, astro-ph.CO, power spectrum: angular dependence, Astronomical and Space Sciences, Physical Chemistry (incl. Structural), Astrophysics - Cosmology and Nongalactic Astrophysics, data analysis method, noise, Cosmology and Nongalactic Astrophysics (astro-ph.CO), satellite: Planck, media_common.quotation_subject, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astronomy & Astrophysics, frequency: high, cosmic background radiation: B-mode, symbols.namesake, Settore FIS/05 - Astronomia e Astrofisica, gravitation: lens, statistical analysis, 0103 physical sciences, Nuclear, Planck, cosmic background radiation: power spectrum, inflation, 0105 earth and related environmental sciences, gravitational radiation: primordial, gravitational radiation, Spectral density, Molecular, Astronomy and Astrophysics, Square degree, detector: sensitivity, Space and Planetary Science, Sky, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

We present a measurement of the $B$-mode polarization power spectrum of the cosmic microwave background (CMB) using taken from July 2014 to December 2016 with the POLARBEAR experiment. The CMB power spectra are measured using observations at 150 GHz with an instantaneous array sensitivity of $\mathrm{NET}_\mathrm{array}=23\, \mu \mathrm{K} \sqrt{\mathrm{s}}$ on a 670 square degree patch of sky centered at (RA, Dec)=($+0^\mathrm{h}12^\mathrm{m}0^\mathrm{s},-59^\circ18^\prime$). A continuously rotating half-wave plate is used to modulate polarization and to suppress low-frequency noise. We achieve $32\,\mu\mathrm{K}$-$\mathrm{arcmin}$ effective polarization map noise with a knee in sensitivity of $\ell = 90$, where the inflationary gravitational wave signal is expected to peak. The measured $B$-mode power spectrum is consistent with a $\Lambda$CDM lensing and single dust component foreground model over a range of multipoles $50 \leq \ell \leq 600$. The data disfavor zero $C_\ell^{BB}$ at $2.2\sigma$ using this $\ell$ range of POLARBEAR data alone. We cross-correlate our data with Planck high frequency maps and find the low-$\ell$ $B$-mode power in the combined dataset to be consistent with thermal dust emission. We place an upper limit on the tensor-to-scalar ratio $r < 0.90$ at 95% confidence level after marginalizing over foregrounds.

Published
2019

14. CMB-S4 Decadal Survey APC White Paper

Author

Shaul Hanany, Georges Obied, J. Colin Hill, Thomas Cecil, Keith L. Thompson, Adam Anderson, Michael L. Brown, Doug Johnstone, Lorenzo Moncelsi, Erminia Calabrese, Howard Hui, Haruki Nishino, Sara M. Simon, James Kerby, Theodore Kisner, K. T. Story, Moritz Münchmeyer, Aritoki Suzuki, Joseph J. Mohr, Adrian T. Lee, Bradley R. Johnson, Sanah Bhimani, W. C. Jones, A. E. Lowitz, Nathan Whitehorn, Valentine Novosad, Marcelo A. Alvarez, Anze Slosar, Kam Arnold, Kevork N. Abazajian, Mustafa A. Amin, Evan Grohs, Abigail G. Vieregg, Siavash Yasini, Mathew S. Madhavacheril, Julien Carron, Ritoban Basu Thakur, Jean-Baptiste Melin, Shawn W. Henderson, Asantha Cooray, Chris Stoughton, Peter Timbie, Matteo Bonato, Ki Won Yoon, Blakesley Burkhart, Salman Habib, T. Natoli, Jacques Delabrouille, Carlo Baccigalupi, Victor Guarino, Steven W. Allen, Kathy Bailey, Aurelien A. Fraisse, Osamu Tajima, Silvia Galli, Denis Barkats, Antony Lewis, Ari Cukierman, Johannes Hubmayr, Marilena LoVerde, Erik Shirokoff, G. P. Holder, James G. Bartlett, James Yeck, Dale Li, N. W. Halverson, Graeme E. Addison, Adam Mantz, Matthieu Tristram, Laura Newburgh, Sarah Shandera, Alessandro Schillaci, Lindsey Bleem, Raphael Flauger, Marcel Schmittfull, S. Pandey, Kent D. Irwin, N. Kurita, Gregory S. Tucker, Matthew Hasselfield, Reijo Keskitalo, Levon Pogosian, Rachel S. Somerville, C. D. Sheehy, Srini Rajagopalan, Jesse Treu, Giuseppe Puglisi, Eric J. Baxter, John M Kovac, Emmanuel Schaan, Marcel Demarteau, Akito Kusaka, Suzanne T. Staggs, Kirit Karkare, Josquin Errard, Thomas Essinger-Hileman, Anne Lähteenmäki, Mattia Negrello, Toshiya Namikawa, Zhilei Xu, Mark Halpern, Simone Ferraro, Edo Berger, François R. Bouchet, Zeeshan Ahmed, Frederick Matsuda, Joseph Eimer, Alexandra S. Rahlin, W. L. Kimmy Wu, Giulio Fabbian, Chao-Lin Kuo, Christian L. Reichardt, Marius Millea, Stephen Padin, A. T. Crites, Joel Meyers, William Edwards, R. Gualtieri, Jason W. Henning, Arthur Kosowsky, Edward J. Wollack, W. L. Holzapfel, Michael D. Niemack, John E. Carlstrom, Rachel Bean, Cora Dvorkin, Ely D. Kovetz, David Alonso, Nicholas Battaglia, Sean Bryan, Gianfranco De Zotti, Anthony Challinor, Graca Rocha, Federico Nati, Jeffrey P. Filippini, Katrin Heitmann, Eric V. Linder, Antony A. Stark, Martin Nordby, Grant Teply, Benjamin Saliwanchik, Peter Adshead, P. Daniel Meerburg, Victoria Calafut, Francis-Yan Cyr-Racine, M.E. Huffer, Chris Bebek, Lloyd Knox, Masashi Hazumi, Eleonora Di Valentino, Natalie A. Roe, Nicholas Galitzki, Masaya Hasegawa, Sarah Kernovsky, Victor Buza, Darcy Barron, C. Pryke, Tijmen de Haan, Tony Mroczkowski, Vera Gluscevic, Andrea Zonca, Daniel Green, Kimberly K. Boddy, Srinivasan Raghunathan, Jeff McMahon, J. E. Ruhl, Steve Kuhlmann, Blake D. Sherwin, Joaquin Vieira, Peter S. Barry, Daisuke Nagai, Karen Byrum, Neelima Sehgal, Murdock Gilchriese, Marco Raveri, M. Tomasi, Douglas Scott, James J. Bock, Martin White, Chang Feng, Ken Ganga, Martina Gerbino, Suvodip Mukherjee, Radek Stompor, Gensheng Wang, B. Racine, Mark Reichanadter, Paul O'Connor, Alexander van Engelen, Kevin M. Huffenberger, Maria Salatino, Kathleen Harrington, Nobuhiko Katayama, Bradford Benson, Daniel Grin, Colin A. Bischoff, Charles R. Lawrence, Mark Vogelsberger, Shannon M. Duff, Scott Watson, Sebastian Bocquet, C. Umiltà, Andrei V. Frolov, C. L. Chang, Johanna Nagy, J. Richard Bond, Philip Daniel Mauskopf, B. Flaugher, Robert R. Caldwell, Mark J. Devlin, Renée Hlozek, Anirban Roy, Elena Pierpaoli, Amy N. Bender, Bruce Partridge, E. Y. Young, Matt Dobbs, Julian Borrill, Adriaan J. Duivenvoorden, Yuji Chinone, Mathieu Remazeilles, T. M. Crawford, Jon E. Gudmundsson, Hsiao-Mei Sherry Cho, and Gunther Haller

Subjects
White paper, 010308 nuclear & particles physics, 0103 physical sciences, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Environmental science, Astrophysics::Cosmology and Extragalactic Astrophysics, Project plan, 010306 general physics, 01 natural sciences
Abstract

We provide an overview of the science case, instrument configuration and project plan for the next-generation ground-based cosmic microwave background experiment CMB-S4, for consideration by the 2020 Decadal Survey.

Published
2019

15. Deployment of Polarbear-2A

Author

Chang Feng, Radek Stompor, Takayuki Tomaru, Rolando Dünner, Josquin Errard, D. Tanabe, Praween Siritanasak, N. Stebor, Julien Carron, D. Leon, Davide Poletti, K. Cheung, C. Tsai, S. Takakura, Grant Teply, Yuto Minami, Yuki Inoue, Stephen M. Feeney, Yuji Chinone, Frederick Matsuda, D. Beck, Akito Kusaka, Y. Akiba, A. Suzuki, Nicoletta Krachmalnicoff, Adrian T. Lee, M. Aguilar Faúndez, J. Peloton, Colin Ross, Osamu Tajima, D. Boettger, B. Westbrook, A. T. P. Pham, M. Navaroli, N. W. Halverson, Y. Zhou, Federico Bianchini, A. Cukierman, Aashrita Mangu, Nobuhiko Katayama, T. Hamada, Tucker Elleflot, Y. Segawa, Masaya Hasegawa, G. Hall, Julian Borrill, Peter A. R. Ade, Eric V. Linder, Giulio Fabbian, H. Nishino, G. Jaehnig, Giuseppe Puglisi, Charles A. Hill, Shunsuke Adachi, S. Takatori, L. Howe, A. J. Gilbert, H. El-Bouhargani, Christian L. Reichardt, Kam Arnold, John Groh, Masashi Hazumi, Neil Goeckner-Wald, Nicholas Galitzki, S. Beckman, Brian Keating, M. A. Dobbs, Carlo Baccigalupi, Clara Vergès, Theodore Kisner, Reijo Keskitalo, Daisuke Kaneko, T. Fujino, S. Kikuchi, Darcy Barron, L. N. Lowry, Scott Chapman, Maximiliano Silva-Feaver, Oliver Jeong, Kevin T. Crowley, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Kaneko, D, Adachi, S, Ade, P, Aguilar Faundez, M, Akiba, Y, Arnold, K, Baccigalupi, C, Barron, D, Beck, D, Beckman, S, Bianchini, F, Boettger, D, Borrill, J, Carron, J, Chapman, S, Cheung, K, Chinone, Y, Crowley, K, Cukierman, A, Dobbs, M, Dunner, R, El-Bouhargani, H, Elleflot, T, Errard, J, Fabbian, G, Feeney, S, Feng, C, Fujino, T, Galitzki, N, Gilbert, A, Goeckner-Wald, N, Groh, J, Hall, G, Halverson, N, Hamada, T, Hasegawa, M, Hazumi, M, Hill, C, Howe, L, Inoue, Y, Jaehnig, G, Jeong, O, Katayama, N, Keating, B, Keskitalo, R, Kikuchi, S, Kisner, T, Krachmalnicoff, N, Kusaka, A, Lee, A, Leon, D, Linder, E, Lowry, L, Mangu, A, Matsuda, F, Minami, Y, Navaroli, M, Nishino, H, Peloton, J, Pham, A, Poletti, D, Puglisi, G, Reichardt, C, Ross, C, Segawa, Y, Silva-Feaver, M, Siritanasak, P, Stebor, N, Stompor, R, Suzuki, A, Tajima, O, Takakura, S, Takatori, S, Tanabe, D, Teply, G, Tomaru, T, Tsai, C, Verges, C, Westbrook, B, Zhou, Y, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)

Subjects
[PHYS]Physics [physics], Settore FIS/05, Gravitational wave, Cosmic microwave background, Millimeter wave, First light, CMB, Condensed Matter Physics, 7. Clean energy, 01 natural sciences, Atomic and Molecular Physics, and Optics, 010305 fluids & plasmas, Microwave emission, Settore FIS/05 - Astronomia e Astrofisica, TES bolometer, Planet, Software deployment, 0103 physical sciences, Extremely high frequency, B-mode polarization, General Materials Science, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Remote sensing
Abstract

International audience; Polarbear-2A is the first of three receivers in the Simons array, a cosmic microwave background experiment located on the Atacama Plateau in Chile. Polarbear-2A was deployed and achieved the first light in January 2019 by mapping the microwave emission from planet observations. Commissioning work is underway to prepare the receiver for science observations.

Published
2019

16. LiteBIRD: A Satellite for the Studies of B-Mode Polarization and Inflation from Cosmic Background Radiation Detection

Author

Josquin Errard, Kent D. Irwin, Ingunn Kathrine Wehus, Kazunori Kohri, Kam Arnold, Atsushi Okamoto, Osamu Tajima, T. Tomida, Hirokazu Ishino, L. Montier, T. Kawasaki, M. Willer, Ryo Yamamoto, Nobuhiko Katayama, B. Thorne, Eiichiro Komatsu, Takayuki Tomaru, Benjamin Westbrook, Toshiaki Iida, Tadayasu Dotani, Yuki Inoue, T. Funaki, Chiko Otani, Bruno Maffei, L. Hayes, Charles A. Hill, F. Vansyngel, T. Nagasaki, L. Duband, Tucker Elleflot, H. Imada, Johannes Hubmayr, A. Cukierman, M. Nakajima, T. Hasebe, Paul Turin, A. Dominjon, Eric V. Linder, S. Takatori, Toshifumi Shimizu, Yuto Minami, Shin Utsunomiya, Y. Sato, Yoshinori Uzawa, D. Tanabe, J. M. Duval, F. Boulanger, Takahiro Okamura, Jo Dunkley, Hiroyuki Sugita, Masato Naruse, Julian Borrill, Makoto Hattori, Theodore Kisner, Yuji Chinone, Tom Nitta, Dale Li, Mathieu Remazeilles, K. Ganga, Hideo Ogawa, Reijo Keskitalo, Masashi Hazumi, Giampaolo Pisano, E. Taylor, S. Takakura, H. Kanai, Jun-ichi Suzuki, N. Sato, Masahiro Tsujimoto, Yutaro Sekimoto, Shin-ichiro Sakai, Kimihiro Kimura, M. Nagai, N. W. Halverson, Anna Mangilli, Seongjae Cho, M. Tristram, S. A. Kernasovskiy, Jonathan Aumont, Blake D. Sherwin, Carole Tucker, Tomotake Matsumura, Kiyotomo Ichiki, Satoru Mima, T. de Haan, T. Hamada, N. Tomita, G. Patanchon, K. Komatsu, Shuji Matsuura, J. Grain, Paul L. Richards, Norio Okada, N. Hidehira, Kazuhisa Mitsuda, Soumen Basak, Yasuhiro Yamada, Aritoki Suzuki, H. K. Eriksen, Hajime Sugai, Shogo Nakamura, Peter A. R. Ade, Alex Lazarian, T. Fujino, Y. Akiba, Gabriel M. Rebeiz, H. Nishino, Nathan Whitehorn, Martin Bucher, R. Stompor, Shingo Kashima, A. Kibayashi, Y. Kida, Noah Kurinsky, D. W. Curtis, M. Inoue, Masaya Hasegawa, Adrian T. Lee, Shugo Oguri, Y. Segawa, David Alonso, A. Ducout, Carlo Baccigalupi, U. Fuskeland, S. Beckman, Uroš Seljak, R. Nagata, J. Fischer, Mitsuhiro Yoshida, K. L. Thompson, Darcy Barron, Gene C. Hilton, Noriko Y. Yamasaki, Erminia Calabrese, Neil Goeckner-Wald, R. Takaku, Suguru Takada, M. A. Dobbs, Oliver Jeong, Toshiya Namikawa, Yuki Sakurai, Chao-Lin Kuo, Kaori Hattori, Keisuke Shinozaki, D. Meilhan, M. Maki, Makoto Sawada, D. Kaneko, T. Yamashita, S. Uozumi, Takashi Noguchi, Akito Kusaka, Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Service des Basses Températures (SBT ), Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire des Cryoréfrigérateurs et Cryogénie Spatiale (LCCS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
detector: cryogenics, Cosmic microwave background, Cosmic background radiation, cosmic background radiation: polarization, Lagrangian point, B-mode polarization, Cosmic inflation, Primordial gravitational wave, Quantum gravity, Satellite, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, 010305 fluids & plasmas, law.invention, Telescope, Settore FIS/05 - Astronomia e Astrofisica, bolometer, law, 0103 physical sciences, General Materials Science, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], detector: optical, 010306 general physics, Physics, Bolometer, gravitational radiation: primordial, Astrophysics::Instrumentation and Methods for Astrophysics, Condensed Matter Physics, Polarization (waves), inflation: model, Atomic and Molecular Physics, and Optics, detector: sensitivity, modulation, Cardinal point, B-mode, angular resolution, moment: multipole, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Multipole expansion
Abstract

著者人数: 152名(所属. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS): 羽澄, 昌史; 堂谷, 忠靖; 長谷部, 孝; 今田, 大皓; 満田, 和久; 坂井, 真一郎; 関本, 裕太郎; Tomida, T.; 辻本, 匡弘; Yamamoto, R.; 山崎, 典子), Accepted: 2019-01-18, 資料番号: SA1180402000

Published
2019

17. The Simons Observatory: Astro2020 APC Whitepaper

Author

Abitbol, Maximilian H., Shunsuke, Adachi, Peter, Ade, James, Aguirre, Zeeshan, Ahmed, Simone, Aiola, Aamir, Ali, David, Alonso, Alvarez, Marcelo A., Kam, Arnold, Peter, Ashton, Zachary, Atkins, Jason, Austermann, Humna, Awan, Carlo, Baccigalupi, Taylor, Baildon, Anton Baleato Lizancos, Darcy, Barron, Nick, Battaglia, Richard, Battye, Eric, Baxter, Andrew, Bazarko, Beall, James A., Rachel, Bean, Dominic, Beck, Shawn, Beckman, Benjamin, Beringue, Tanay, Bhandarkar, Sanah, Bhimani, Federico, Bianchini, Steven, Boada, David, Boettger, Boris, Bolliet, Richard Bond, J., Julian, Borrill, Brown, Michael L., Sarah Marie Bruno, Sean, Bryan, Erminia, Calabrese, Victoria, Calafut, Paolo, Calisse, Julien, Carron, Carl, Fred. M., Juan, Cayuso, Anthony, Challinor, Grace, Chesmore, Yuji, Chinone, Jens, Chluba, Hsiao-Mei Sherry Cho, Steve, Choi, Susan, Clark, Philip, Clarke, Carlo, Contaldi, Gabriele, Coppi, Cothard, Nicholas F., Kevin, Coughlin, Will, Coulton, Devin, Crichton, Crowley, Kevin D., Crowley, Kevin T., Ari, Cukierman, D'Ewart, John M., Rolando, Dünner, Tijmen de Haan, Mark, Devlin, Simon, Dicker, Bradley, Dober, Duell, Cody J., Shannon, Duff, Adri, Duivenvoorden, Dunkley, Jo, Hamza El Bouhargani, Josquin, Errard, Giulio, Fabbian, Stephen, Feeney, James, Fergusson, Simone, Ferraro, Pedro, Fluxà, Katherine, Freese, Frisch, Josef C., Andrei, Frolov, George, Fuller, Nicholas, Galitzki, Gallardo, Patricio A., Jose Tomas Galvez Ghersi, Jiansong, Gao, Eric, Gawiser, Martina, Gerbino, Vera, Gluscevic, Neil, Goeckner-Wald, Joseph, Golec, Sam, Gordon, Megan, Gralla, Daniel, Green, Arpi, Grigorian, John, Groh, Chris, Groppi, Yilun, Guan, Gudmundsson, Jon E., Mark, Halpern, Dongwon, Han, Peter, Hargrave, Kathleen, Harrington, Masaya, Hasegawa, Matthew, Hasselfield, Makoto, Hattori, Victor, Haynes, Masashi, Hazumi, Erin, Healy, Henderson, Shawn W., Brandon, Hensley, Carlos, Hervias-Caimapo, Hill, Charles A., Colin Hill, J., Gene, Hilton, Matt, Hilton, Hincks, Adam D., Gary, Hinshaw, Renée, Hložek, Shirley, Ho, Shuay-Pwu Patty Ho, Hoang, Thuong D., Jonathan, Hoh, Hotinli, Selim C., Zhiqi, Huang, Johannes, Hubmayr, Kevin, Huffenberger, Hughes, John P., Anna, Ijjas, Margaret, Ikape, Kent, Irwin, Jaffe, Andrew H., Bhuvnesh, Jain, Oliver, Jeong, Matthew, Johnson, Daisuke, Kaneko, Karpel, Ethan D., Nobuhiko, Katayama, Brian, Keating, Reijo, Keskitalo, Theodore, Kisner, Kenji, Kiuchi, Jeff, Klein, Kenda, Knowles, Anna, Kofman, Brian, Koopman, Arthur, Kosowsky, Nicoletta, Krachmalnicoff, Akito, Kusaka, Phil, Laplante, Jacob, Lashner, Adrian, Lee, Eunseong, Lee, Antony, Lewis, Yaqiong, Li, Zack, Li, Michele, Limon, Eric, Linder, Jia, Liu, Carlos, Lopez-Caraballo, Thibaut, Louis, Marius, Lungu, Mathew, Madhavacheril, Daisy, Mak, Felipe, Maldonado, Hamdi, Mani, Ben, Mates, Frederick, Matsuda, Loïc, Maurin, Phil, Mauskopf, Andrew, May, Nialh, Mccallum, Heather, Mccarrick, Chris, Mckenney, Jeff, Mcmahon, Daniel Meerburg, P., James, Mertens, Joel, Meyers, Amber, Miller, Mark, Mirmelstein, Kavilan, Moodley, Jenna, Moore, Moritz, Munchmeyer, Charles, Munson, Masaaki, Murata, Sigurd, Naess, Toshiya, Namikawa, Federico, Nati, Martin, Navaroli, Laura, Newburgh, Ho Nam Nguyen, Andrina, Nicola, Mike, Niemack, Haruki, Nishino, Yume, Nishinomiya, John, Orlowski-Scherer, Luca, Pagano, Bruce, Partridge, Francesca, Perrotta, Phumlani, Phakathi, Lucio, Piccirillo, Elena, Pierpaoli, Giampaolo, Pisano, Davide, Poletti, Roberto, Puddu, Giuseppe, Puglisi, Chris, Raum, Reichardt, Christian L., Mathieu, Remazeilles, Yoel, Rephaeli, Dominik, Riechers, Felipe, Rojas, Aditya, Rotti, Anirban, Roy, Sharon, Sadeh, Yuki, Sakurai, Maria, Salatino, Mayuri Sathyanarayana Rao, Lauren, Saunders, Emmanuel, Schaan, Marcel, Schmittfull, Neelima, Sehgal, Joseph, Seibert, Uros, Seljak, Paul, Shellard, Blake, Sherwin, Meir, Shimon, Carlos, Sierra, Jonathan, Sievers, Cristobal, Sifon, Precious, Sikhosana, Maximiliano, Silva-Feaver, Simon, Sara M., Adrian, Sinclair, Kendrick, Smith, Wuhyun, Sohn, Rita, Sonka, David, Spergel, Jacob, Spisak, Staggs, Suzanne T., George, Stein, Stevens, Jason R., Radek, Stompor, Aritoki, Suzuki, Osamu, Tajima, Satoru, Takakura, Grant, Teply, Thomas, Daniel B., Ben, Thorne, Robert, Thornton, Trac, Hy, Jesse, Treu, Calvin, Tsai, Carole, Tucker, Joel, Ullom, Vagnozzi, Sunny, Alexander van Engelen, Jeff Van Lanen, Van Winkle, Daniel D., Vavagiakis, Eve M., Clara, Vergès, Michael, Vissers, Kasey, Wagoner, Samantha, Walker, Yuhan, Wang, Jon, Ward, Ben, Westbrook, Nathan, Whitehorn, Jason, Williams, Joel, Williams, Edward, Wollack, Zhilei, Xu, Siavash, Yasini, Edward, Young, Byeonghee, Yu, Cyndia, Yu, Fernando, Zago, Mario, Zannoni, Hezi, Zhang, Kaiwen, Zheng, Ningfeng, Zhu, and Andrea, Zonca

Published
2019

18. The Simons Observatory: gain, bandpass and polarization-angle calibration requirements for B-mode searches

Author

Valentina Fanfani, Mario Zannoni, Mark J. Devlin, J. Colin Hill, Josquin Errard, Aritoki Suzuki, Gabriele Coppi, Edward J. Wollack, Julien Carron, Adrian T. Lee, Thibaut Louis, Davide Poletti, Mathew S. Madhavacheril, Michael L. Brown, Baptiste Jost, Brian Keating, Federico Nati, P. Daniel Meerburg, S. Azzoni, Maximilian H. Abitbol, Haruki Nishino, Sara M. Simon, Michael J. Randall, Jacob Spisak, Lyman A. Page, Bradley R. Johnson, Jo Dunkley, Yuji Chinone, Aamir Ali, David Alonso, Grant Teply, Jeff McMahon, Carlo Baccigalupi, Clara Vergès, Jens Chluba, Aditya Rotti, Giuseppe Puglisi, Nicholas Galitzki, Kevin D. Crowley, Martina Gerbino, Zhilei Xu, Jack Lashner, Erminia Calabrese, Kevin T. Crowley, Darcy Barron, Akito Kusaka, Nicoletta Krachmalnicoff, Heather McCarrick, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Van Swinderen Institute for Particle Physics and G, High-Energy Frontier, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), APC - Cosmologie, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), ANR-17-CE31-0022,BxB,Champs B interstellaires et modes B de l'inflation(2017), ANR-17-CE23-0002,B3DCMB,Big Bang à partir de Big Data (du fond diffus cosmologique)(2017), Abitbol, M, Alonso, D, Simon, S, Lashner, J, Crowley, K, Ali, A, Azzoni, S, Baccigalupi, C, Barron, D, Brown, M, Calabrese, E, Carron, J, Chinone, Y, Chluba, J, Coppi, G, Devlin, M, Dunkley, J, Errard, J, Fanfani, V, Galitzki, N, Gerbino, M, Colin Hill, J, Johnson, B, Jost, B, Keating, B, Krachmalnicoff, N, Kusaka, A, Lee, A, Louis, T, Madhavacheril, M, Mccarrick, H, Mcmahon, J, Daniel Meerburg, P, Nati, F, Nishino, H, Page, L, Poletti, D, Puglisi, G, Randall, M, Rotti, A, Spisak, J, Suzuki, A, Teply, G, Vergès, C, Wollack, E, Xu, Z, and Zannoni, M

Subjects
CMBR polarisation, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Calibration (statistics), Cosmic microwave background, FOS: Physical sciences, Parameter space, Residual, Atomic, 01 natural sciences, Particle and Plasma Physics, Settore FIS/05 - Astronomia e Astrofisica, Band-pass filter, Observatory, 0103 physical sciences, CMBR experiments, Nuclear, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Instrumentation and Methods for Astrophysics (astro-ph.IM), 010303 astronomy & astrophysics, CMBR polarization, Physics, Settore FIS/05, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, cosmological parameters from CMBR, Molecular, Astronomy and Astrophysics, Polarization (waves), Nuclear & Particles Physics, gravitational waves and CMBR polarization, Computational physics, astro-ph.CO, CMBR experiment, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Instrumentation and Methods for Astrophysics, Focus (optics), Astronomical and Space Sciences, astro-ph.IM, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We quantify the calibration requirements for systematic uncertainties for next-generation ground-based observatories targeting the large-angle $B$-mode polarization of the Cosmic Microwave Background, with a focus on the Simons Observatory (SO). We explore uncertainties on gain calibration, bandpass center frequencies, and polarization angles, including the frequency variation of the latter across the bandpass. We find that gain calibration and bandpass center frequencies must be known to percent levels or less to avoid biases on the tensor-to-scalar ratio $r$ on the order of $\Delta r\sim10^{-3}$, in line with previous findings. Polarization angles must be calibrated to the level of a few tenths of a degree, while their frequency variation between the edges of the band must be known to ${\cal O}(10)$ degrees. Given the tightness of these calibration requirements, we explore the level to which residual uncertainties on these systematics would affect the final constraints on $r$ if included in the data model and marginalized over. We find that the additional parameter freedom does not degrade the final constraints on $r$ significantly, broadening the error bar by ${\cal O}(10\%)$ at most. We validate these results by reanalyzing the latest publicly available data from the BICEP2/Keck collaboration within an extended parameter space covering both cosmological, foreground and systematic parameters. Finally, our results are discussed in light of the instrument design and calibration studies carried out within SO., Comment: 41 pages, 18 figures

Published
2021

19. Development of Readout Electronics for POLARBEAR-2 Cosmic Microwave Background Experiment

Author

Y. Hori, Kaja Rotermund, Aritoki Suzuki, Aaron Lee, Nathan Whitehorn, Kam Arnold, Masashi Hazumi, W. L. Holzapfel, Masaya Hasegawa, Y. Akiba, Brian Keating, Tucker Elleflot, Amy N. Bender, Kaori Hattori, I. Shirley, Darcy Barron, Akito Kusaka, M. A. Dobbs, T. de Haan, A. Cukierman, and Joshua Montgomery

Subjects
Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Cosmic microwave background, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, 02 engineering and technology, 01 natural sciences, Multiplexing, law.invention, Responsivity, law, 0103 physical sciences, General Materials Science, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Physics, Equivalent series resistance, business.industry, Bolometer, Astrophysics::Instrumentation and Methods for Astrophysics, Instrumentation and Detectors (physics.ins-det), 021001 nanoscience & nanotechnology, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Inductance, Capacitor, Frequency domain, Optoelectronics, Astrophysics - Instrumentation and Methods for Astrophysics, 0210 nano-technology, business
Abstract

The readout of transition-edge sensor (TES) bolometers with a large multiplexing factor is key for the next generation cosmic microwave background (CMB) experiment, Polarbear-2 (Suzuki in J Low Temp Phys 176:719, 2014), having 7588 TES bolometers. To enable the large arrays, we have been developing a readout system with a multiplexing factor of 40 in the frequency domain. Extending that architecture to 40 bolometers requires an increase in the bandwidth of the SQUID electronics, above 4 MHz. This paper focuses on cryogenic readout and shows how it affects cross talk and the responsivity of the TES bolometers. A series resistance, such as equivalent series resistance of capacitors for LC filters, leads to non-linear response of the bolometers. A wiring inductance modulates a voltage across the bolometers and causes cross talk. They should be controlled well to reduce systematic errors in CMB observations. We have been developing a cryogenic readout with a low series impedance and have tuned bolometers in the middle of their transition at a high frequency ( $$>$$ 3 MHz).

Published
2016

20. Half-meter Scale Superconducting Magnetic Bearing for Cosmic Microwave Background Polarization Experiments

Author

Yuki Sakurai, Osamu Tajima, Kenji Kiuchi, Charles A. Hill, Peter Ashton, Akito Kusaka, and Nobuhiko Katayama

Subjects
Physics, History, Orthogonal polarization spectral imaging, Detector, Cosmic microwave background, Field of view, Astrophysics::Cosmology and Extragalactic Astrophysics, Liquid nitrogen, Atmospheric noise, Polarization (waves), Computer Science Applications, Education, Computational physics, Superconducting magnetic bearing
Abstract

We report the development of a large-diameter superconducting magnetic bearing (SMB) used in a continuously rotating cryogenic half-wave plate (HWP) polarization modulator for cosmic microwave background (CMB) polarization experiments. A precise measurement of the CMB polarization will place tighter constrains on cosmic inflation, describing the rapid expansion of the early universe. The polarization modulator is a critical instrument for suppressing 1/f contamination, which is mainly caused by atmospheric noise, and for mitigating systematic uncertainties that arise when differencing orthogonal polarization detectors. To ensure a sufficient field of view and to reduce thermal emission, the polarization modulator must have a clear-aperture diameter of > 500 mm and must operate at cryogenic temperatures. We constructed a superconducting magnetic bearing (SMB) with an inner diameter of 550 mm, which is the largest used in any CMB polarization experiment to date. We tested the friction and stiffness of the bearing at liquid nitrogen temperatures. The measured total loss is 0.4 W and the spring constant is >105 N/m, which satisfies typical experimental requirements. Furthermore, we performed a performance test by changing the number of disk-shaped YBCO tiles, and then confirmed that the SMB performance was proportional to the YBCO volume.

Published
2020

21. Systematic uncertainties in the Simons Observatory: optical effects and sensitivity considerations

Author

Federico Nati, Brian Keating, Simon Dicker, Zhilei Xu, Philip Daniel Mauskopf, C. L. Reichardt, Mark J. Devlin, Frederick Matsuda, Brian J. Koopman, Jeff McMahon, Giulio Fabbian, S. T. Staggs, S. Parshley, Jacob Lashner, Maria Salatino, Yuji Chinone, Edward J. Wollack, Jon E. Gudmundsson, Gabriele Coppi, Ningfeng Zhu, Sean Bryan, A. T. Lee, C. Hill, Akito Kusaka, Aamir Ali, Giuseppe Puglisi, Eve M. Vavagiakis, Aritoki Suzuki, Nicholas Galitzki, Michele Limon, J. Orlowski-Scherer, Patricio A. Gallardo, Sara M. Simon, Michael D. Niemack, and Nicholas F. Cothard

Subjects
Physics, Aperture, business.industry, media_common.quotation_subject, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 02 engineering and technology, 021001 nanoscience & nanotechnology, Polarization (waves), 01 natural sciences, law.invention, 010309 optics, Telescope, Optics, Observatory, law, Sky, 0103 physical sciences, 0210 nano-technology, business, Focus (optics), Microwave, media_common
Abstract

The Simons Observatory (SO) is a new experiment that aims to measure the cosmic microwave background (CMB) in temperature and polarization. SO will measure the polarized sky over a large range of microwave frequencies and angular scales using a combination of small (~0.5 m) and large (~6 m) aperture telescopes and will be located in the Atacama Desert in Chile. This work is part of a series of papers studying calibration, sensitivity, and systematic errors for SO. In this paper, we discuss current efforts to model optical systematic effects, how these have been used to guide the design of the SO instrument, and how these studies can be used to inform instrument design of future experiments like CMB-S4. While optical systematics studies are underway for both the small aperture and large aperture telescopes, we limit the focus of this paper to the more mature large aperture telescope design for which our studies include: pointing errors, optical distortions, beam ellipticity, cross-polar response, instrumental polarization rotation and various forms of sidelobe pickup.

Published
2018

22. Development of calibration strategies for the Simons Observatory

Author

Frederick Matsuda, Giuseppe Puglisi, Grant Teply, Ningfeng Zhu, Zhilei Xu, Brian Keating, Christian L. Reichardt, Brian J. Koopman, Philip Daniel Mauskopf, Aamir Ali, Jeff McMahon, Neil Goeckner-Wald, Sean Bryan, Kevin D. Crowley, Giulio Fabbian, Martina Gerbino, Patricio A. Gallardo, Federico Nati, Maria Salatino, Akito Kusaka, Yuji Chinone, Sara M. Simon, Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Zmuidzinas, J, Gao, JR, Zhu, N, Xu, Z, Salatino, M, Reichardt, C, Puglisi, G, Nati, F, Mcmahon, J, Mauskopf, P, Matsuda, F, Kusaka, A, Koopman, B, Keating, B, Goeckner-Wald, N, Gallardo, P, Fabbian, G, Crowley, K, Chinone, Y, Ali, A, Gerbino, M, Simon, S, Teply, G, Bryan, S, Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)

Subjects
cosmic microwave background, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Simons Observatory, Computer science, Cosmic microwave background, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, 7. Clean energy, 01 natural sciences, Observatory, 0103 physical sciences, Calibration, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], inflation, 010306 general physics, Simons Observatory, cosmic microwave background, calibration, 010303 astronomy & astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Remote sensing, Inflation (cosmology), Spectrometer, Gravitational wave, Settore FIS/05, Astrophysics::Instrumentation and Methods for Astrophysics, neutrinos, calibration, Gravitational lens, Neutrino, Astrophysics - Instrumentation and Methods for Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The Simons Observatory (SO) is a set of cosmic microwave background instruments that will be deployed in the Atacama Desert in Chile. The key science goals include setting new constraints on cosmic inflation, measuring large scale structure with gravitational lensing, and constraining neutrino masses. Meeting these science goals with SO requires high sensitivity and improved calibration techniques. In this paper, we highlight a few of the most important instrument calibrations, including spectral response, gain stability, and polarization angle calibrations. We present their requirements for SO and experimental techniques that can be employed to reach those requirements., 13 pages, 4 figures, SPIE Astronomical Telescopes and Instrumentation 2018

Published
2018

23. Studies of systematic uncertainties for Simons Observatory: detector array effects

Author

Jason E. Austermann, Kevin T. Crowley, Shuay-Pwu Patty Ho, Joel N. Ullom, Jeff McMahon, Aritoki Suzuki, Ari Cukierman, Clara Vergès, Mayuri Sathyanarayana Rao, Michael R. Vissers, Zhilei Xu, Shannon M. Duff, Christian L. Reichardt, Giulio Fabbian, Daniel Thomas, Michael L. Brown, Suzanne T. Staggs, Sara M. Simon, Patricio A. Gallardo, Akito Kusaka, Bradley Dober, Federico Nati, Giuseppe Puglisi, Max Silva-Feaver, Maria Salatino, Grant Teply, Johannes Hubmayr, Praween Siritanasak, Jo Dunkley, Neil Goeckner-Wald, Josquin Errard, Yuji Chinone, Edward J. Wollack, Brian Keating, Aamir Ali, Benjamin Westbrook, Ningfeng Zhu, Nialh McCallum, Michael D. Niemack, AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Gao, JR, Crowley, K, Simon, S, Silva-Feaver, M, Goeckner-Wald, N, Ali, A, Austermann, J, Brown, M, Chinone, Y, Cukierman, A, Dober, B, Duff, S, Dunkley, J, Errard, J, Fabbian, G, Gallardo, P, Ho, S, Hubmayr, J, Keating, B, Kusaka, A, Mccallum, N, Mcmahon, J, Nati, F, Niemack, M, Puglisi, G, Sathyanarayana Rao, M, Reichardt, C, Salatino, M, Siritanasak, P, Staggs, S, Suzuki, A, Teply, G, Thomas, D, Ullom, J, Verges, C, Vissers, M, Westbrook, B, Wollack, E, Xu, Z, Zhu, N, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), and Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES)

Subjects
systematic effects, cosmic microwave background, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Simons Observatory, Cosmic microwave background, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, non-linearity, law.invention, detector array, optical coupling, gain variation, crosstalk, Optics, law, Observatory, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Anisotropy, 010303 astronomy & astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Leakage (electronics), Physics, 010308 nuclear & particles physics, Gravitational wave, business.industry, Settore FIS/05, Bolometer, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Polarization (waves), business, Astrophysics - Instrumentation and Methods for Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

In this proceeding, we present studies of instrumental systematic effects for the Simons Obsevatory (SO) that are associated with the detector system and its interaction with the full SO experimental systems. SO will measure the Cosmic Microwave Background (CMB) temperature and polarization anisotropies over a wide range of angular scales in six bands with bandcenters spanning from 27 GHz to 270 GHz. We explore effects including intensity-to-polarization leakage due to coupling optics, bolometer nonlinearity, uncalibrated gain variations of bolometers, and readout crosstalk. We model the level of signal contamination, discuss proposed mitigation schemes, and present instrument requirements to inform the design of SO and future CMB projects., Proceeding from SPIE Astronomical Telescopes+Instrumentation 2018 (27 pages, 13 figures) v2: Added HEALPix reference

Published
2018

24. Quantum Sensing for High Energy Physics

Author

Cynthia Jenks, Vesna Mitrovic, Matthew Dietrich, Paul D. Lett, Petra Merkel, Kevin J. O'Brien, Volodymyr Yefremenko, Roger Rusack, Mattia Checchin, Ian Shipsey, Sae Woo Nam, Nicholas A. Peters, Alexander Romanenko, Malcolm Boshier, Michael V. Fazio, Tenzin Rabga, David Underwood, Larry Lurio, Karen Byrum, John Zasadzinski, Gensheng Wang, Benjamin J. Lawrie, Jonathan King, Hogan Nguyen, Eve Kovacs, Howard Nicholson, Jeffrey R. Guest, Robert Wagner, Xuedan Ma, Amr S. Helmy, Andrew Sonnenschein, U. Patel, Jason W. Henning, Xufeng Zhang, Valerie Taylor, Yuekun Heng, Geoffrey T. Bodwin, C. M. Posada, Andrei Nomerotski, Jessica Metcalfe, Hal Finkel, Patrick J. Fox, Yuri Alexeev, Keith Schwab, Derek F. Jackson Kimball, Nathan Woollett, Karl van Bibber, Joseph Heremans, Akito Kusaka, Harry Weerts, David Hume, Zeeshan Ahmed, Jonathan Lewis, Pavel Lougovski, Marcel Demarteau, Roger O'Brient, John F. Mitchell, Ranjan Dharmapalan, Vishnu Zutshi, Gustavo Cancelo, Przemyslaw Bienias, D. Braga, Richard Kriske, Junqi Xie, Ron Harnik, Giorgio Apollinari, Kent D. Irwin, Vladan Vuletic, Gianpaolo Carosi, R. Tschirhart, Erik Shirokoff, Zelimir Djurcic, James E. Fast, M. Crisler, Sergei Chekanov, Junjia Ding, Karl K. Berggren, Jason M. Hogan, Asimina Arvanitaki, Aaron S. Chou, Donna Kubik, Holger Mueller, Johannes Hubmayr, Andrei Gaponenko, Michael L. Norman, Raphael C. Pooser, Salman Habib, Konrad Lehnert, Nick Karonis, Aashish A. Clerk, Peter Fierlinger, Raj Kettimuthu, Monika Schleier-Smith, J. Segal, David D. Awschalom, D. Bowring, Ian C. Cloët, S. Rescia, Edward May, Misun Min, Tijana Rajh, Sandeep Miryala, Bjoern Penning, Phay J. Ho, Andrew Geraci, Gerald Gabrielse, Christopher George Tully, Supratik Guha, Maurice Garcia-Sciveres, Jie Zhang, Thomas Cecil, John M. Doyle, Sergey Perverzev, C. L. Chang, Jimmy Proudfoot, and Antonino Miceli

Subjects
Physics, Particle physics, Quantum sensor, Experimental methods, Domain (software engineering)
Abstract

Report of the first workshop to identify approaches and techniques in the domain of quantum sensing that can be utilized by future High Energy Physics applications to further the scientific goals of High Energy Physics.

Published
2018

25. A large-diameter cryogenic rotation stage for half-wave plate polarization modulation on the POLARBEAR-2 experiment

Author

Adrian T. Lee, B. Bixler, Akito Kusaka, Frederick Matsuda, Alex G. Droster, Danielle R. Sponseller, Charles A. Hill, Arian Jadbabaie, Oliver Jeong, Tomotake Matsumura, R. Tat, Aritoki Suzuki, Alex Madurowicz, Paul Barton, Mael Flament, Yuki Sakurai, S. Ganjam, and Adam Rutkowski

Subjects
Cryostat, Photon, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Physics::Instrumentation and Detectors, Cosmic microwave background, FOS: Physical sciences, 7. Clean energy, 01 natural sciences, Waveplate, Optics, 0103 physical sciences, General Materials Science, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), 010302 applied physics, Physics, business.industry, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Polarimeter, Condensed Matter Physics, Polarization (waves), Atomic and Molecular Physics, and Optics, Modulation, Astrophysics - Instrumentation and Methods for Astrophysics, business, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We describe the design of a cryogenic rotation stage (CRS) for use with the cryogenic half-wave plate (CHWP) polarization modulator on the POLARBEAR-2b and POLARBEAR-2c (PB2b/c) cosmic microwave background (CMB) experiments, the second and third installments of the Simons Array. Rapid modulation of the CMB polarization signal using a CHWP suppresses 1/f contamination due to atmospheric turbulence and allows a single polarimeter to measure both polarization states, mitigating systematic effects that arise when differencing orthogonal detectors. To modulate the full detector array while avoiding excess photon loading due to thermal emission, the CHWP must have a clear-aperture diameter of > 450 mm and be cooled to < 100 K. We have designed a 454-mm-clear-aperture, < 65 K CRS using a superconducting magnetic bearing driven by a synchronous magnetic motor. We present the specifications for the CRS, its interfacing to the PB2b/c receiver cryostat, its performance in a stand-alone test, and plans for future work., PREPRINT VERSION. Accepted to the Journal of Low Temperature Physics, Article JLTP-D-17-00265R1 See DOI link, supplied by Springer Publishing, for the fully-reviewed published article and citation information

Published
2018
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26. Results from the Atacama B-mode Search (ABS) Experiment

Author

Sara M. Simon, Norman Jarosik, Matthew Hasselfield, Steve K. Choi, S. P. Ho, K. W. Yoon, Gene C. Hilton, Gonzalo A. Palma, Kent D. Irwin, Michael R. Nolta, J. W. Appel, Hsiao-Mei Cho, Michael D. Niemack, Carl D. Reintsema, Jonathan Sievers, Akito Kusaka, Lucas Parker, Joseph W. Fowler, Suzanne T. Staggs, Luis E. Campusano, G. W. Nixon, Thomas Essinger-Hileman, James A. Beall, Kevin T. Crowley, Katerina Visnjic, Patricio A. Gallardo, Lyman A. Page, and Srinivasan Raghunathan

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), media_common.quotation_subject, Cosmic microwave background, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 7. Clean energy, 01 natural sciences, Electromagnetic radiation, symbols.namesake, 0103 physical sciences, Atacama B-Mode Search, Planck, 010306 general physics, 010303 astronomy & astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), media_common, Cosmic dust, Physics, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Polarization (waves), 13. Climate action, Sky, symbols, Astrophysics - Instrumentation and Methods for Astrophysics, Right ascension, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The Atacama B-mode Search (ABS) is an experiment designed to measure cosmic microwave background (CMB) polarization at large angular scales ($\ell>40$). It operated from the ACT site at 5190~m elevation in northern Chile at 145 GHz with a net sensitivity (NEQ) of 41 $��$K$\sqrt{\rm s}$. It employed an ambient-temperature sapphire half-wave plate rotating at 2.55 Hz to modulate the incident polarization signal and reduce systematic effects. We report here on the analysis of data from a 2400 deg$^2$ patch of sky centered at declination $-42^\circ$ and right ascension $25^\circ$. We perform a blind analysis. After unblinding, we find agreement with the Planck TE and EE measurements on the same region of sky. We marginally detect polarized dust emission and give an upper limit on the tensor-to-scalar ratio of $r, 38 pages, 11 figures

Published
2018
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27. Studies of systematic uncertainties for Simons Observatory: polarization modulator related effects

Author

Amber Miller, Aamir Ali, Grant Teply, Ningfeng Zhu, Jeff McMahon, Kevin Coughlin, Joy Didier, Giulio Fabbian, Nicholas Galitzki, Yuji Chinone, Jon E. Gudmundsson, Peter Ashton, Sara M. Simon, Zhilei Xu, Jacob Lashner, Kevin T. Crowley, Christian L. Reichardt, Neil Goeckner-Wald, Brian Keating, Sean Bryan, Adrian T. Lee, Giuseppe Puglisi, Charles A. Hill, Akito Kusaka, Maria Salatino, and Martina Gerbino

Subjects
Sapphire, Simons Observatory, Cosmic microwave background, 01 natural sciences, Waveplate, Continuously Rotating Half-Wave Plate, Non Linearity, 010305 fluids & plasmas, 010309 optics, Optics, Observatory, 0103 physical sciences, Cosmic Microwave Background, Time domain, Physics, business.industry, Settore FIS/05, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Polarization (waves), Systematic effects, Slant Incidence, Amplitude, Intensity to Polarization Leakage, Millimeter, business
Abstract

The Simons Observatory (SO) will observe the temperature and polarization anisotropies of the cosmic microwave background (CMB) over a wide range of frequencies (27 to 270 GHz) and angular scales by using both small (∼0.5 m) and large (∼6 m) aperture telescopes. The SO small aperture telescopes will target degree angular scales where the primordial B-mode polarization signal is expected to peak. The incoming polarization signal of the small aperture telescopes will be modulated by a cryogenic, continuously-rotating half-wave plate (CRHWP) to mitigate systematic effects arising from slowly varying noise and detector pair-differencing. In this paper, we present an assessment of some systematic effects arising from using a CRHWP in the SO small aperture systems. We focus on systematic effects associated with structural properties of the HWP and effects arising when operating a HWP, including the amplitude of the HWP synchronous signal (HWPSS), and I → P (intensity to polarization) leakage that arises from detector non-linearity in the presence of a large HWPSS. We demonstrate our ability to simulate the impact of the aforementioned systematic effects in the time domain. This important step will inform mitigation strategies and design decisions to ensure that SO will meet its science goals.

Published
2018

28. Designs for next generation CMB survey strategies from Chile

Author

Edward J. Wollack, Aamir Ali, Giuseppe Puglisi, Michael L. Brown, Michael D. Niemack, Neil Goeckner-Wald, Julian Borrill, Akito Kusaka, Zhilei Xu, Ningfeng Zhu, Yuji Chinone, Suet Ying D. Mak, Nialh McCallum, Daniel Thomas, Maria Salatino, Patricio A. Gallardo, Eve M. Vavagiakis, Lyman A. Page, Jeff McMahon, Reijo Keskitalo, Jason R. Stevens, Grant Teply, Adrian T. Lee, AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Simons Observatory, Computer science, Aperture, media_common.quotation_subject, Astrophysics::High Energy Astrophysical Phenomena, Cosmic microwave background, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Observing Strategy, law.invention, Telescope, Observatory, law, 0103 physical sciences, Cosmic Microwave Background, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, media_common, Gravitational wave, Settore FIS/05, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Gravitational lens, Sky, Atacama Cosmology Telescope, Astrophysics::Earth and Planetary Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

New telescopes are being built to measure the Cosmic Microwave Background (CMB) with unprecedented sensitivity, including Simons Observatory (SO), CCAT-prime, the BICEP Array, SPT-3G, and CMB Stage-4. We present observing strategies for telescopes located in Chile that are informed by the tools used to develop recent Atacama Cosmology Telescope (ACT) and Polarbear surveys. As with ACT and Polarbear, these strategies are composed of scans that sweep in azimuth at constant elevation. We explore observing strategies for both small (0.42 m) aperture telescopes (SAT) and a large (6 m) aperture telescope (LAT). We study strategies focused on small sky areas to search for inflationary gravitational waves as well as strategies spanning roughly half the low-foreground sky to constrain the effective number of relativistic species and measure the sum of neutrino masses via the gravitational lensing signal due to large scale structure. We present these strategies specifically considering the telescope hardware and science goals of the SO, located at 23 degrees South latitude, 67.8 degrees West longitude. Observations close to the Sun and the Moon can introduce additional systematics by applying additional power to the instrument through telescope sidelobes. Significant side lobe contamination in the data can occur even at tens of degrees or more from bright sources. Therefore, we present several strategies that implement Sun and Moon avoidance constraints into the telescope scheduling. Strategies for resolving conflicts between simultaneously visible fields are discussed. We focus on maximizing telescope time spent on science observations. It will also be necessary to schedule calibration measurements, however that is beyond the scope of this work. The outputs of this study are algorithms that can generate specific schedule commands for the Simons Observatory instruments., Comment: 15 pages, 9 figures, 3 tables, SPIE Astronomical Telescopes + Instrumentation 2018

Published
2018

29. Optimization Study for the Experimental Configuration of CMB-S4

Author

Julian Borril, Natalie A. Roe, Simone Ferraro, Stephen M. Feeney, Josquin Errard, Aritoki Suzuki, Adrian T. Lee, Blake D. Sherwin, Yuji Chinone, Reijo Keskitalo, Darcy Barron, Akito Kusaka, AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), AstroParticule et Cosmologie ( APC - UMR 7164 ), and Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA )

Subjects
CMBR polarisation, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Aperture, media_common.quotation_subject, Cosmic microwave background, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, 7. Clean energy, Atomic, Cosmology, law.invention, Telescope, Particle and Plasma Physics, Conceptual design, law, 0103 physical sciences, CMBR experiments, Nuclear, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Instrumentation and Methods for Astrophysics (astro-ph.IM), [ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010303 astronomy & astrophysics, media_common, Physics, Inflation (cosmology), COSMIC cancer database, 010308 nuclear & particles physics, Astrophysics::Instrumentation and Methods for Astrophysics, cosmological parameters from CMBR, Molecular, Astronomy and Astrophysics, Nuclear & Particles Physics, Universe, astro-ph.CO, Astrophysics - Instrumentation and Methods for Astrophysics, gravitational waves and CMBR polarization, Algorithm, Astronomical and Space Sciences, Astrophysics - Cosmology and Nongalactic Astrophysics, astro-ph.IM
Abstract

The CMB Stage 4 (CMB-S4) experiment is a next-generation, ground-based experiment that will measure the cosmic microwave background (CMB) polarization to unprecedented accuracy, probing the signature of inflation, the nature of cosmic neutrinos, relativistic thermal relics in the early universe, and the evolution of the universe. To advance the progress towards designing the instrument for CMB-S4, we have established a framework to optimize the instrumental configuration to maximize its scientific output. In this paper, we report our first results from this framework, using simplified instrumental and cost models. We have primarily studied two classes of instrumental configurations: arrays of large aperture telescopes with diameters ranging from 2-10 m, and hybrid arrays that combine small-aperture telescopes (0.5 m diameter) with large-aperture telescopes. We explore performance as a function of the telescope aperture size, the distribution of the detectors into different microwave frequencies, the survey strategy and survey area, the low-frequency noise performance, and the balance between small and large aperture telescopes for the hybrid configurations. We also examine the impact from the uncertainties of the instrumental model. There are several areas that deserve further improvement. In our forecasting framework, we adopt a simple two-component foregrounds model with spacially varying power-law spectral indices. We estimate delensing performance statistically and ignore possible non-idealities. Instrumental systematics, which is not accounted for in our study, may influence the design. Further study of the instrumental and cost models will be one of the main areas of study by the whole CMB-S4 community. We hope that our framework will be useful for estimating the influence of these improvement in future, and we will incorporate them in order to improve the optimization further., 42 pages, 23 figures; minor English/grammar corrections

Published
2018

30. The POLARBEAR-2 and Simons Array Focal Plane Fabrication Status

Author

Adrian T. Lee, Neil Goeckner-Wald, D. Beck, D. Leon, A. Cukierman, M. Navaroli, Brian Keating, Y. Segawa, Tucker Elleflot, Masaya Hasegawa, Maximiliano Silva-Feaver, Peter A. R. Ade, Y. Akiba, Matt Dobbs, Julian Borrill, Paul L. Richards, Stephen M. Feeney, Rolando Dünner, K. M. Rotermund, C. Tsai, Oliver Jeong, Osamu Tajima, A. T. P. Pham, Eric V. Linder, Gabriel M. Rebeiz, Josquin Errard, S. Takakura, D. Plambeck, Lucio Piccirillo, Nathan Whitehorn, Yuji Chinone, S. Beckman, Giulio Fabbian, L. Howe, M. Le Jeune, Federico Bianchini, Christopher Raum, Daisy Mak, Grant Teply, W. L. Holzapfel, Andrew May, Joshua Montgomery, Carlo Baccigalupi, H. Roberts, S. Takatori, Christian L. Reichardt, Reijo Keskitalo, A. J. Gilbert, Gary A. Fuller, R. Tat, Akito Kusaka, Nobuhiko Katayama, D. Boettger, A. Tikhomirov, John Groh, Benjamin Westbrook, Giuseppe Puglisi, Charles A. Hill, Scott Chapman, Nicoletta Krachmalnicoff, Colin Ross, Amy N. Bender, A. Madurowicz, Darcy Barron, J. Peloton, N. W. Halverson, L. N. Lowry, Aritoki Suzuki, Chang Feng, Andrew H. Jaffe, Takayuki Tomaru, Davide Poletti, A. Zahn, Radek Stompor, Mario Ferrada Aguilar, Theodore Kisner, T. de Haan, T. Hamada, Gabriele Coppi, Yuto Minami, Yuki Inoue, Nathan J. Miller, D. Tanabe, H. Nishino, G. Jaehnig, Masashi Hazumi, Nicholas Galitzki, Blake D. Sherwin, Kevin D. Crowley, Kam Arnold, Frederick Matsuda, D. Kaneko, Praween Siritanasak, AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Westbrook, B, Ade, P, Aguilar, M, Akiba, Y, Arnold, K, Baccigalupi, C, Barron, D, Beck, D, Beckman, S, Bender, A, Bianchini, F, Boettger, D, Borrill, J, Chapman, S, Chinone, Y, Coppi, G, Crowley, K, Cukierman, A, de Haan, T, Dunner, R, Dobbs, M, Elleflot, T, Errard, J, Fabbian, G, Feeney, S, Feng, C, Fuller, G, Galitzki, N, Gilbert, A, Goeckner-Wald, N, Groh, J, Halverson, N, Hamada, T, Hasegawa, M, Hazumi, M, Hill, C, Holzapfel, W, Howe, L, Inoue, Y, Jaehnig, G, Jaffe, A, Jeong, O, Kaneko, D, Katayama, N, Keating, B, Keskitalo, R, Kisner, T, Krachmalnicoff, N, Kusaka, A, Le Jeune, M, Lee, A, Leon, D, Linder, E, Lowry, L, Madurowicz, A, Mak, D, Matsuda, F, May, A, Miller, N, Minami, Y, Montgomery, J, Navaroli, M, Nishino, H, Peloton, J, Pham, A, Piccirillo, L, Plambeck, D, Poletti, D, Puglisi, G, Raum, C, Rebeiz, G, Reichardt, C, Richards, P, Roberts, H, Ross, C, Rotermund, K, Segawa, Y, Sherwin, B, Silva-Feaver, M, Siritanasak, P, Stompor, R, Suzuki, A, Tajima, O, Takakura, S, Takatori, S, Tanabe, D, Tat, R, Teply, G, Tikhomirov, A, Tomaru, T, Tsai, C, Whitehorn, N, Zahn, A, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), and Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES)

Subjects
Cosmic microwave background, cosmic background radiation: polarization, CMB, Dichroic glass, 01 natural sciences, law.invention, law, Atomic and Molecular Physics, Polarization, General Materials Science, silicon: nitrogen, Instrumentation, Mathematical Physics, 010302 applied physics, Physics, Settore FIS/05, superconductivity, Detector, Detectors, Polarization (waves), Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Cardinal point, Materials Science (all), silicon: oxygen, Astrophysics - Instrumentation and Methods for Astrophysics, Transition edge sensor, performance, Astrophysics - Cosmology and Nongalactic Astrophysics, Fabrication, Sinuous antenna, Inflation, General Physics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Classical Physics, FOS: Physical sciences, Telescope, Optics, Settore FIS/05 - Astronomia e Astrofisica, bolometer, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), detector: design, activity report, business.industry, Bolometer, and Optics, business
Abstract

著者人数: 93名（所属. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS): 羽澄, 昌史), Accepted: 2018-08-27, 資料番号: SA1180208000

Published
2017

31. Concept Study of Optical Configurations for High-Frequency Telescope for LiteBIRD

Author

D. W. Curtis, M. Nakajima, T. Funaki, R. Takaku, Yoshinori Uzawa, Carlo Baccigalupi, Johannes Hubmayr, U. Fuskeland, Theodore Kisner, S. Beckman, Anna Mangilli, Erminia Calabrese, Neil Goeckner-Wald, Uroš Seljak, M. Nagai, N. Katayama, Jonathan Aumont, Carole Tucker, Suguru Takada, Shin Utsunomiya, Kazunori Kohri, R. Nagata, Kam Arnold, M. Bucher, A. Dominjon, N. Sato, M. A. Dobbs, Shin-ichiro Sakai, Darcy Barron, Gene C. Hilton, H. K. Eriksen, Yasuhiro Yamada, Oliver Jeong, Aritoki Suzuki, Atsushi Okamoto, Tadayasu Dotani, T. Tomida, D. Meilhan, L. Duband, S. A. Kernasovskiy, S. Takakura, S. Takatori, R. Stompor, A. Ducout, B. Thorne, Eiichiro Komatsu, Hajime Sugai, Keisuke Shinozaki, N. Tomita, J. Fischer, Yuji Chinone, C. L. Kuo, L. Montier, Akito Kusaka, Toshiaki Iida, Aaron Lee, Yuki Inoue, Makoto Sawada, Ingunn Kathrine Wehus, L. Hayes, Mitsuhiro Yoshida, K. L. Thompson, H. Nishino, Mathieu Remazeilles, Tomotake Matsumura, Shugo Oguri, K. Komatsu, Reijo Keskitalo, T. Yamashita, T. Kawasaki, Takahiro Okamura, Masashi Hazumi, Osamu Tajima, Takayuki Tomaru, G. Patanchon, M. Tristram, Giampaolo Pisano, Hirokazu Ishino, Masato Naruse, Jun-ichi Suzuki, H. M. Cho, Paul Turin, Toshiya Namikawa, Yuki Sakurai, Y. Kida, Blake D. Sherwin, J. Grain, Chiko Otani, Noriko Y. Yamasaki, N. W. Halverson, Shuji Matsuura, S. Uozumi, Takashi Noguchi, T. Nagasaki, H. Imada, M. Willer, Y. Sato, M. Inoue, J. M. Duval, Bruno Maffei, Toshifumi Shimizu, Yuto Minami, F. Boulanger, Tucker Elleflot, Charles A. Hill, Benjamin Westbrook, Shogo Nakamura, Peter A. R. Ade, Kaori Hattori, Paul L. Richards, Alex Lazarian, Y. Segawa, Julian Borrill, Ryo Yamamoto, Kiyotomo Ichiki, M. Maki, Satoru Mima, D. Tanabe, Jo Dunkley, Kazuhisa Mitsuda, Soumen Basak, Gabriel M. Rebeiz, Tom Nitta, T. de Haan, T. Hamada, H. Kanai, K. Ganga, Hideo Ogawa, D. Kaneko, A. Cukierman, Nathan Whitehorn, Eric V. Linder, Masaya Hasegawa, Josquin Errard, Kimihiro Kimura, Hiroyuki Sugita, David Alonso, T. Hasebe, Kent D. Irwin, E. Taylor, Norio Okada, N. Hidehira, Shingo Kashima, A. Kibayashi, Noah Kurinsky, T. Fujino, Y. Akiba, Makoto Hattori, Dale Li, Masahiro Tsujimoto, Yutaro Sekimoto, F. Vansyngel, Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Electronique et des Technologies de l'Information (CEA-LETI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Service des Basses Températures (SBT ), Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Laboratoire des Cryoréfrigérateurs et Cryogénie Spatiale (LCCS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), and Université Grenoble Alpes (UGA)-Direction de Recherche Technologique (CEA) (DRT (CEA))

Subjects
Cosmic microwave background radiation, Inflation, Satellite, Telescope, Silicon, Cosmic microwave background, chemistry.chemical_element, engineering.material, 01 natural sciences, law.invention, 010309 optics, Optics, Settore FIS/05 - Astronomia e Astrofisica, Coating, law, 0103 physical sciences, General Materials Science, Sensitivity (control systems), [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Physics, business.industry, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Lens (optics), chemistry, engineering, Reflection (physics), business, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

著者人数: 152名（所属. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS): 長谷部, 孝; 堂谷, 忠靖; 羽澄, 昌史; 今田, 大皓; 満田, 和久; 坂井, 真一郎; 関本, 裕太郎; Tomida, T.; 辻本, 匡弘; Yamamoto, R.; 山崎, 典子), Accepted: 2018-04-07, 資料番号: SA1180209000

Published
2017

32. CMB-S4 Technology Book, First Edition

Author

Shaul Hanany, Thomas Essinger-Hileman, Philip Daniel Mauskopf, Tijmen de Haan, Joaquin Vieira, Shawn W. Henderson, Charles A. Hill, Ki Won Yoon, Suzanne T. Staggs, Stephen C. Parshley, Lorenzo Moncelsi, Karl Young, C. Pryke, Abigail G. Vieregg, Gregory S. Tucker, Salatino Maria, John M Kovac, Adrian T. Lee, Michael D. Niemack, David T. Chuss, Aritoki Suzuki, Amy N. Bender, Peter T. Timbie, Kent D. Irwin, Eric R. Switzer, Jeffrey P. Filippini, N. W. Halverson, Ken Ganga, Ritoban Basu Thakur, Sean Bryan, Akito Kusaka, Zeeshan Ahmed, Edward J. Wollack, Stephen Padin, S. P. Ho, E. Y. Young, Andrew Nadolski, Karwan Rostem, Jon E. Gudmundsson, Natalie A. Roe, S. A. Kernasovskiy, Johannes Hubmayr, Maximilian H. Abitbol, Darcy Barron, Roger O'Brient, Jeff McMahon, Keith L. Thompson, Ari Cukierman, Benjamin Westbrook, Oliver Jeong, John E. Carlstrom, J. E. Ruhl, Sara M. Simon, Bradley R. Johnson, Matt Dobbs, Bradford Benson, Colin A. Bischoff, C. L. Chang, and Johanna Nagy

Subjects
Physics, media_common.quotation_subject, Cosmic microwave background, Dark matter, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, 02 engineering and technology, Astrophysics, Cosmic variance, 021001 nanoscience & nanotechnology, Polarization (waves), 01 natural sciences, Optical coupling, Universe, 0103 physical sciences, Dark energy, Neutrino, 0210 nano-technology, 010303 astronomy & astrophysics, media_common
Abstract

CMB-S4 is a proposed experiment to map the polarization of the Cosmic Microwave Background (CMB) to nearly the cosmic variance limit for the angular scales that are accessible from the ground. The science goals and capabilities of CMB-S4 in illuminating cosmic inflation, measuring the sum of neutrino masses, searching for relativistic relics in the early universe, characterizing dark energy and dark matter, and mapping the matter distribution in the universe have been described in the CMB-S4 Science Book. This Technology Book is a companion volume to the Science Book. The ambitious science goals of the proposed "Stage-IV" CMB-S4 will require a step forward in experimental capability from the current Stage-III experiments. To guide this process, the community summarized the current state of the technology and identify RD Receiver Optics; Focal-Plane Optical Coupling; and Focal-Plane Sensor and Readout.

Published
2017

33. Making maps of cosmic microwave background polarization for B-mode studies: the POLARBEAR example

Author

Eric V. Linder, Josquin Errard, Davide Poletti, Tucker Elleflot, Osamu Tajima, Giulio Fabbian, Theodore Kisner, Julian Borrill, Maude Le Jeune, Grantland Hall, Aritoki Suzuki, Akito Kusaka, L. Howe, Praween Siritanasak, Yuji Chinone, Ari Cukierman, Brian Keating, D. Leon, M. Navaroli, Kam Arnold, Reijo Keskitalo, Giuseppe Puglisi, Bryan Steinbach, Stephen M. Feeney, Frederick Matsuda, Colin Ross, J. Peloton, Nathan Whitehorn, Charles Hill, Andrew H. Jaffe, Masashi Hazumi, Christian L. Reichardt, John Groh, Neil Goeckner-Wald, Yuki Inoue, Scott Chapman, Darcy Barron, L. N. Lowry, Nathan Stebor, Masaya Hasegawa, Oliver Jeong, S. Beckman, Hans P. Paar, Carlo Baccigalupi, Nobuhiko Katayama, Grant Teply, Radek Stompor, A. Ducout, Adrian T. Lee, Science and Technology Facilities Council, Science and Technology Facilities Council (STFC), AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Institut Lagrange de Paris, Sorbonne Universités, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie ( APC - UMR 7164 ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), Laboratoire de Physique Nucléaire et de Hautes Énergies ( LPNHE ), Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Paris Diderot - Paris 7 ( UPD7 ) -Centre National de la Recherche Scientifique ( CNRS ), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Sorbonne Université (SU), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Poletti, D, Fabbian, G, Le Jeune, M, Peloton, J, Arnold, K, Baccigalupi, C, Barron, D, Beckman, S, Borrill, J, Chapman, S, Chinone, Y, Cukierman, A, Ducout, A, Elleflot, T, Errard, J, Feeney, S, Goeckner-Wald, N, Groh, J, Hall, G, Hasegawa, M, Hazumi, M, Hill, C, Howe, L, Inoue, Y, Jaffe, A, Jeong, O, Katayama, N, Keating, B, Keskitalo, R, Kisner, T, Kusaka, A, Lee, A, Leon, D, Linder, E, Lowry, L, Matsuda, F, Navaroli, M, Paar, H, Puglisi, G, Reichardt, C, Ross, C, Siritanasak, P, Stebor, N, Steinbach, B, Stompor, R, Suzuki, A, Tajima, O, Teply, G, and Whitehorn, N

Subjects
Computer science, POWER SPECTRUM, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Cosmic microwave background, cosmic background radiation: polarization, cosmic background radiation, STATISTICAL-ANALYSIS, 01 natural sciences, Spectral line, estimator, 010303 astronomy & astrophysics, [ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], media_common, Settore FIS/05, Estimator, Polarization (waves), observations [cosmology], 3. Good health, PLANCK, B-mode, DATA SETS, Cosmology: Observation, Physical Sciences, astro-ph.CO, Astrophysics - Instrumentation and Methods for Astrophysics, Algorithm, cosmology: observations, performance, Astronomical and Space Sciences, Astrophysics - Cosmology and Nongalactic Astrophysics, noise, Cosmology and Nongalactic Astrophysics (astro-ph.CO), media_common.quotation_subject, Infrasound, FOS: Physical sciences, Astronomy & Astrophysics, Settore FIS/05 - Astronomia e Astrofisica, 0103 physical sciences, DESTRIPING TECHNIQUE, structure, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], FIELD, numerical calculations, Instrumentation and Methods for Astrophysics (astro-ph.IM), Science & Technology, 010308 nuclear & particles physics, MAKING ALGORITHM, Astronomy and Astrophysics, 0201 Astronomical And Space Sciences, frequency: low, Space and Planetary Science, Sky, correlation, atmosphere, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], astro-ph.IM
Abstract

Analysis of cosmic microwave background (CMB) datasets typically requires some filtering of the raw time-ordered data. Filtering is frequently used to minimize the impact of low frequency noise, atmospheric contributions and/or scan synchronous signals on the resulting maps. In this work we explicitly construct a general filtering operator, which can unambiguously remove any set of unwanted modes in the data, and then amend the map-making procedure in order to incorporate and correct for it. We show that such an approach is mathematically equivalent to the solution of a problem in which the sky signal and unwanted modes are estimated simultaneously and the latter are marginalized over. We investigate the conditions under which this amended map-making procedure can render an unbiased estimate of the sky signal in realistic circumstances. We then study the effects of time-domain filtering on the noise correlation structure in the map domain, as well as impact it may have on the performance of the popular pseudo-spectrum estimators. We conclude that although maps produced by the proposed estimators arguably provide the most faithful representation of the sky possible given the data, they may not straightforwardly lead to the best constraints on the power spectra of the underlying sky signal and special care may need to be taken to ensure this is the case. By contrast, simplified map-makers which do not explicitly correct for time-domain filtering, but leave it to subsequent steps in the data analysis, may perform equally well and be easier and faster to implement. We focus on polarization-sensitive measurements targeting the B-mode component of the CMB signal and apply the proposed methods to realistic simulations based on characteristics of an actual CMB polarization experiment, POLARBEAR., Comment: 26 pages

Published
2016

34. Cross-correlation of CMB Polarization Lensing with High-z Submillimeter Herschel-ATLAS Galaxies

Author

Grant Teply, Masashi Hazumi, Tucker Elleflot, Nicholas Galitzki, D. Beck, Akito Kusaka, Carlo Baccigalupi, Blake D. Sherwin, Nicoletta Krachmalnicoff, Christian L. Reichardt, Clara Vergès, Eric V. Linder, Giulio Fabbian, Giuseppe Puglisi, L. Howe, Hamza El Bouhargani, Osamu Tajima, Neil Goeckner-Wald, D. Boettger, M. Navaroli, Kam Arnold, K. Cheung, MA Faúndez, Josquin Errard, D. Leon, Julien Carron, S. Takakura, Masaya Hasegawa, Radek Stompor, N. Katayama, Brian Keating, Atp Pham, Federico Bianchini, Darcy Barron, L. N. Lowry, C. Tsai, H. Nishino, Chang Feng, Max Silva-Feaver, A. Suzuki, Julian Borrill, Frederick Matsuda, Aaron Lee, Yuji Chinone, D. Kaneko, S. Takatori, Davide Poletti, Yuto Minami, AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Faundez, M, Arnold, K, Baccigalupi, C, Barron, D, Beck, D, Bianchini, F, Boettger, D, Borrill, J, Carron, J, Cheung, K, Chinone, Y, Bouhargani, H, Elleflot, T, Errard, J, Fabbian, G, Feng, C, Galitzki, N, Goeckner-Wald, N, Hasegawa, M, Hazumi, M, Howe, L, Kaneko, D, Katayama, N, Keating, B, Krachmalnicoff, N, Kusaka, A, Lee, A, Leon, D, Linder, E, Lowry, L, Matsuda, F, Minami, Y, Navaroli, M, Nishino, H, Pham, A, Poletti, D, Puglisi, G, Reichardt, C, Sherwin, B, Silva-Feaver, M, Stompor, R, Suzuki, A, Tajima, O, Takakura, S, Takatori, S, Teply, G, Tsai, C, Verges, C, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Polarbear

Subjects
QB991.L37, Cosmic microwave background radiation (322), 010504 meteorology & atmospheric sciences, astro-ph.GA, Cosmic microwave background, Large-scale structure of the universe (902), Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Astronomy & Astrophysics, Atomic, Physical Chemistry, 01 natural sciences, Cosmology, QB0460, Particle and Plasma Physics, Settore FIS/05 - Astronomia e Astrofisica, QB0980, 0103 physical sciences, cosmic background radiation: polarization, cosmic background radiation: temperature, error: statistical, halo: mass, galaxy, redshift: dependence, lens, cosmic background radiation: power spectrum, Nuclear, 10. No inequality, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, polarization lensing, ComputingMilieux_MISCELLANEOUS, Weak gravitational lensing, QB, 0105 earth and related environmental sciences, [PHYS]Physics [physics], Physics, Settore FIS/05, Astrophysics::Instrumentation and Methods for Astrophysics, Molecular, Spectral density, Astronomy and Astrophysics, Polarization (waves), Redshift, Galaxy, Weak gravitational lensing (1797), Space and Planetary Science, High-redshift galaxies (734), astro-ph.CO, Halo, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Cosmology (343), Astronomical and Space Sciences, Physical Chemistry (incl. Structural)
Abstract

著者人数: 48名 (所属. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS): 羽澄, 昌史), Number of authors: 48 (Affiliation. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS): Hazumi, Masashi), Accepted: 2019-09-26, 資料番号: SA1190160000

Published
2019

35. Systematic effects from an ambient-temperature, continuously rotating half-wave plate

Author

Lyman A. Page, J. W. Appel, Steve K. Choi, Sara M. Simon, Lucas Parker, Akito Kusaka, Katerina Visnjic, Srinivasan Raghunathan, N. Jarosik, Kevin T. Crowley, Shuay-Pwu Patty Ho, Suzanne T. Staggs, and Thomas Essinger-Hileman

Subjects
Physics, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Waveplate, Computational physics, law.invention, Telescope, Dipole, 13. Climate action, law, 0103 physical sciences, Quadrupole, Astrophysics - Instrumentation and Methods for Astrophysics, 010306 general physics, 010303 astronomy & astrophysics, Instrumentation, Instrumentation and Methods for Astrophysics (astro-ph.IM), Order of magnitude, Microwave, Leakage (electronics)
Abstract

We present an evaluation of systematic effects associated with a continuously-rotating, ambient-temperature half-wave plate (HWP) based on two seasons of data from the Atacama B-Mode Search (ABS) experiment located in the Atacama Desert of Chile. The ABS experiment is a microwave telescope sensitive at 145 GHz. Here we present our in-field evaluation of celestial (CMB plus galactic foreground) temperature-to-polarization leakage. We decompose the leakage into scalar, dipole, and quadrupole leakage terms. We report a scalar leakage of ~0.01%, consistent with model expectations and an order of magnitude smaller than other CMB experiments have reported. No significant dipole or quadrupole terms are detected; we constrain each to be, 11 pages, 8 figures; revision to submitted version, Fig. 5 and Eqs. (14) and (15) corrected; added Fig. 9 and description, text revisions for clarification, Fig. 5 revised for better calibration, corrected labeling errors and plotting bugs in Fig. 3, 4, and Eq. (14) and (15)

Published
2016

36. CMB-S4 Science Book, First Edition

Author

Nicholas Battaglia, Daniel Green, Kam Arnold, Blake D. Sherwin, Joaquin Vieira, Tijmen de Haan, Marilena LoVerde, M. Lilley, Marco Peloso, Raphael Flauger, John M Kovac, Josquin Errard, Scott Watson, Cora Dvorkin, Tristan L. Smith, Stephen M. Feeney, P. D. Meerburg, Sperello di Serego Alighieri, Akito Kusaka, J. Colin Hill, Glenn D. Starkman, Zeeshan Ahmed, W. L. Holzapfel, George M. Fuller, Julian B. Muñoz, Maude Le Jeune, Chao-Lin Kuo, Nathan Whitehorn, Adam Mantz, Reijo Keskitalo, Marcel Schmittfull, Christian L. Reichardt, Julian Borrill, Victor Buza, Michael D. Niemack, Emmanuel Schaan, Giulio Fabbian, Simone Ferraro, T. M. Crawford, Lorenzo Sorbo, Mathew S. Madhavacheril, Jeff McMahon, Ely D. Kovetz, Kevork N. Abazajian, James G. Bartlett, Jason W. Henning, Lloyd Knox, Evan Grohs, J. Peloton, K. T. Story, Robert R. Caldwell, Erminia Calabrese, Francesco De Bernardis, Wayne Hu, Steven W. Allen, Levon Pogosian, Sarah Shandera, David J. E. Marsh, Amber Miller, Joel Meyers, Arthur Kosowsky, John E. Carlstrom, Carlo Baccigalupi, Joanna Dunkley, Kevin M. Huffenberger, C. Pryke, Jeffrey P. Filippini, Alexander van Engelen, Francis-Yan Cyr-Racine, Bradford Benson, Marco Raveri, Daniel Grin, Colin A. Bischoff, Ho Nam Nguyen, Neelima Sehgal, Aditya Rotti, C. L. Chang, Vera Gluscevic, Douglas Scott, W. L. Kimmy Wu, David Alonso, Adrian T. Lee, Renée Hlozek, Graca Rocha, Peter Adshead, and Gilbert Holder

Subjects
Physics, Gravitational wave, General relativity, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, Northern Hemisphere, Cosmic background radiation, Dark energy, Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Neutrino, Polarization (waves)
Abstract

This book lays out the scientific goals to be addressed by the next-generation ground-based cosmic microwave background experiment, CMB-S4, envisioned to consist of dedicated telescopes at the South Pole, the high Chilean Atacama plateau and possibly a northern hemisphere site, all equipped with new superconducting cameras. CMB-S4 will dramatically advance cosmological studies by crossing critical thresholds in the search for the B-mode polarization signature of primordial gravitational waves, in the determination of the number and masses of the neutrinos, in the search for evidence of new light relics, in constraining the nature of dark energy, and in testing general relativity on large scales.

Published
2016

37. Novel Calibration System with Sparse Wires for CMB Polarization Receivers

Author

I. Buder, A. Brizius, Osamu Tajima, Akito Kusaka, H. Nguyen, and Colin A. Bischoff

Subjects
Physics, Photon, business.industry, Detector, Cosmic microwave background, Bolometer, Astrophysics::Instrumentation and Methods for Astrophysics, Field of view, Astrophysics::Cosmology and Extragalactic Astrophysics, Condensed Matter Physics, Polarization (waves), Atomic and Molecular Physics, and Optics, law.invention, Cardinal point, Optics, law, Calibration, General Materials Science, business
Abstract

A curl competent (also known as B-modes) in the cosmic microwave background (CMB) polarization is a smoking gun signature of the inflationary universe. To achieve better sensitivity to this faint signal, CMB polarization experiments aim to maximize the number of detector elements, resulting in a large focal plane receiver. Detector calibration of the polarization response becomes essential. It is extremely useful to be able to calibrate “simultaneously” all detectors on the large focal plane. We developed a novel calibration system that rotates a large “sparse” grid of metal wires, in front of and fully covering the field of view of the focal plane receiver. Polarized radiation is created via the reflection of ambient temperature photons from the wire surface. Since the detector has a finite beam size, the observed signal is convolved with the beam property. The intensity of the of the calibrator is reasonable (a few Kelvin or less) compared to sky temperature for typical observing conditions (∼10 K). The system played a successful role for receiver calibration of QUIET, a CMB polarization experiment located in the Atacama desert in Chile. The successful performance revealed that this system is applicable to other experiments based on different technologies, e.g. TES bolometers.

Published
2012

38. Fast and precise map-making for massively multi-detector CMB experiments

Author

D. Sutton, Sigurd Naess, H. K. Eriksen, Ingunn Kathrine Wehus, Akito Kusaka, Michael L. Brown, Bradley R. Johnson, Joe Zuntz, and Pedro G. Ferreira

Subjects
Physics, Noise (signal processing), Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Context (language use), Astrophysics, Measure (mathematics), Power (physics), Space and Planetary Science, Spurious relationship, Focus (optics), Algorithm, Scaling
Abstract

Future cosmic microwave background (CMB) polarisation experiments aim to measure an unprecedentedly small signal - the primordial gravity wave component of the polarisation field B-mode. To achieve this, they will analyse huge datasets, involving years worth of time-ordered data (TOD) from massively multi-detector focal planes. This creates the need for fast and precise methods to complement the M-L approach in analysis pipelines. In this paper, we investigate fast map-making methods as applied to long duration, massively multi-detector, ground-based experiments, in the context of the search for B-modes. We focus on two alternative map-making approaches: destriping and TOD filtering, comparing their performance on simulated multi-detector polarisation data. We have written an optimised, parallel destriping code, the DEStriping CARTographer DESCART, that is generalised for massive focal planes, including the potential effect of cross-correlated TOD 1/f noise. We also determine the scaling of computing time for destriping as applied to a simulated full-season data-set for a realistic experiment. We find that destriping can out-perform filtering in estimating both the large-scale E and B-mode angular power spectra. In particular, filtering can produce significant spurious B-mode power via EB mixing. Whilst this can be removed, it contributes to the variance of B-mode bandpower estimates at scales near the primordial B-mode peak. For the experimental configuration we simulate, this has an effect on the possible detection significance for primordial B-modes. Destriping is a viable alternative fast method to the full M-L approach that does not cause the problems associated with filtering, and is flexible enough to fit into both M-L and Monte-Carlo pseudo-Cl pipelines.

Published
2010

39. The POLARBEAR-2 and the Simons Array Experiment

Author

Peter A. R. Ade, O. Zahn, Gabriel M. Rebeiz, Suguru Takada, Josquin Errard, D. Poletti, Zigmund Kermish, K. Mizukami, Carlo Baccigalupi, Darcy Barron, Neil Goeckner-Wald, Theodore Kisner, Christopher Raum, G. Hall, R. Dunner, Joshua Montgomery, Tucker Elleflot, Paul L. Richards, A. J. Gilbert, Stephen M. Feeney, M. Navaroli, T. Fujino, Nathan Stebor, Aritoki Suzuki, S. Takatori, D. Boettger, M. A. Dobbs, J. Kaufman, T. Yamashita, Eric V. Linder, Giulio Fabbian, Y. Akiba, Adrian T. Lee, A. Tikhomirov, B. Westbrook, Tomotake Matsumura, Jose H. Groh, Amy N. Bender, Masaya Hasegawa, Scott Chapman, Brian Keating, Colin Ross, Nathan J. Miller, Y. Hori, Radek Stompor, L. Howe, Reijo Keskitalo, A. Ducout, H. Nishino, A. Cukierman, G. Jaehnig, Takayuki Tomaru, I. Shirley, K. M. Rotermund, Osamu Tajima, Masashi Hazumi, D. Leon, Christian L. Reichardt, Kam Arnold, Blake D. Sherwin, Praween Siritanasak, J. Peloton, Kaori Hattori, T. Hamada, L. Lowry, M. Le Jeune, C. Aleman, Giuseppe Puglisi, Jun-ichi Suzuki, F. Irie, Akito Kusaka, W. Holzapfel, O. B. Jeong, Julian Borrill, Chang Feng, A. Zahn, Yuji Chinone, Nobuhiko Katayama, N. Whitehorn, Y. Segawa, K. Kazemzadeh, S. Takakura, Andrew H. Jaffe, N. W. Halverson, T. de Haan, Yuki Inoue, Frederick Matsuda, C. Hill, G. Fuller, Université Paris-Sorbonne (UP4), AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), POLARBEAR, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Suzuki, A, Ade, P, Akiba, Y, Aleman, C, Arnold, K, Baccigalupi, C, Barch, B, Barron, D, Bender, A, Boettger, D, Borrill, J, Chapman, S, Chinone, Y, Cukierman, A, Dobbs, M, Ducout, A, Dunner, R, Elleflot, T, Errard, J, Fabbian, G, Feeney, S, Feng, C, Fujino, T, Fuller, G, Gilbert, A, Goeckner-Wald, N, Groh, J, Haan, T, Hall, G, Halverson, N, Hamada, T, Hasegawa, M, Hattori, K, Hazumi, M, Hill, C, Holzapfel, W, Hori, Y, Howe, L, Inoue, Y, Irie, F, Jaehnig, G, Jaffe, A, Jeong, O, Katayama, N, Kaufman, J, Kazemzadeh, K, Keating, B, Kermish, Z, Keskitalo, R, Kisner, T, Kusaka, A, Jeune, M, Lee, A, Leon, D, Linder, E, Lowry, L, Matsuda, F, Matsumura, T, Miller, N, Mizukami, K, Montgomery, J, Navaroli, M, Nishino, H, Peloton, J, Poletti, D, Puglisi, G, Rebeiz, G, Raum, C, Reichardt, C, Richards, P, Ross, C, Rotermund, K, Segawa, Y, Sherwin, B, Shirley, I, Siritanasak, P, Stebor, N, Stompor, R, Suzuki, J, Tajima, O, Takada, S, Takakura, S, Takatori, S, Tikhomirov, A, Tomaru, T, Westbrook, B, Whitehorn, N, Yamashita, T, Zahn, A, Zahn, O, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Université Paris-Sorbonne ( UP4 ), AstroParticule et Cosmologie ( APC - UMR 7164 ), and Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Observatoire de Paris-Université Paris Diderot - Paris 7 ( UPD7 ) -Commissariat à l'énergie atomique et aux énergies alternatives ( CEA )

Subjects
Cosmic microwave background, Inflation, Gravitational weak lensing, Polarization, B-mode, [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], cosmic background radiation, 7. Clean energy, 01 natural sciences, pixel, optical, General Materials Science, neutrino: mass, [ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Weak gravitational lensing, Mathematical Physics, Physics, Settore FIS/05, Astrophysics::Instrumentation and Methods for Astrophysics, Polarization (waves), Condensed Matter Physics, Atomic and Molecular Physics, and Optics, astro-ph.CO, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics, General Physics, noise, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Frequency band, Classical Physics, Cosmic background radiation, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Noise-equivalent temperature, Optics, Settore FIS/05 - Astronomia e Astrofisica, gravitation: lens, bolometer, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), 010308 nuclear & particles physics, business.industry, Gravitational wave, gravitational radiation, temperature, sensitivity, Transition edge sensor, business, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], astro-ph.IM
Abstract

We present an overview of the design and status of the \Pb-2 and the Simons Array experiments. \Pb-2 is a Cosmic Microwave Background polarimetry experiment which aims to characterize the arc-minute angular scale B-mode signal from weak gravitational lensing and search for the degree angular scale B-mode signal from inflationary gravitational waves. The receiver has a 365~mm diameter focal plane cooled to 270~milli-Kelvin. The focal plane is filled with 7,588 dichroic lenslet-antenna coupled polarization sensitive Transition Edge Sensor (TES) bolometric pixels that are sensitive to 95~GHz and 150~GHz bands simultaneously. The TES bolometers are read-out by SQUIDs with 40 channel frequency domain multiplexing. Refractive optical elements are made with high purity alumina to achieve high optical throughput. The receiver is designed to achieve noise equivalent temperature of 5.8~$\mu$K$_{CMB}\sqrt{s}$ in each frequency band. \Pb-2 will deploy in 2016 in the Atacama desert in Chile. The Simons Array is a project to further increase sensitivity by deploying three \Pb-2 type receivers. The Simons Array will cover 95~GHz, 150~GHz and 220~GHz frequency bands for foreground control. The Simons Array will be able to constrain tensor-to-scalar ratio and sum of neutrino masses to $\sigma(r) = 6\times 10^{-3}$ at $r = 0.1$ and $\sum m_\nu (\sigma =1)$ to 40 meV., Comment: Accepted to Journal of Low Temperature Physics LTD16 Special Issue, Low Temperature Detector 16 Conference Proceedings, 5 pages, 1 figure

Published
2015

40. The Q/U Imaging Experiment: Polarization Measurements Of Radio Sources At 43 And 95 GHz

Author

Derek Araujo, Kevin M. Huffenberger, T. C. Gaier, Colin A. Bischoff, T. M. Ruud, Yuji Chinone, Osamu Tajima, Joshua O. Gundersen, Laura Newburgh, K. A. Cleary, R. Reeves, H. K. Eriksen, I. Buder, Sigurd Naess, R. Monsalve, Akito Kusaka, Amber Miller, Simon J. E. Radford, Ingunn Kathrine Wehus, Suzanne T. Staggs, Masaya Hasegawa, Clive Dickinson, Anthony C. S. Readhead, Masashi Hazumi, J. T. L. Zwart, and K. L. Thompson

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Radio galaxy, Astrophysics::High Energy Astrophysical Phenomena, Cosmic microwave background, Centaurus A, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, symbols.namesake, 0103 physical sciences, Stokes parameters, Planck, Instrumentation and Methods for Astrophysics (astro-ph.IM), 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, 010308 nuclear & particles physics, Linear polarization, Astronomy and Astrophysics, Polarization (waves), Astrophysics - Astrophysics of Galaxies, Space and Planetary Science, Astrophysics of Galaxies (astro-ph.GA), QUIET, symbols, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present polarization measurements of extragalactic radio sources observed during the Cosmic Microwave Background polarization survey of the Q/U Imaging Experiment (QUIET), operating at 43 GHz (Q-band) and 95 GHz (W-band). We examine sources selected at 20 GHz from the public, $>$40 mJy catalog of the Australia Telescope (AT20G) survey. There are $\sim$480 such sources within QUIET's four low-foreground survey patches, including the nearby radio galaxies Centaurus A and Pictor A. The median error on our polarized flux density measurements is 30--40 mJy per Stokes parameter. At S/N $> 3$ significance, we detect linear polarization for seven sources in Q-band and six in W-band; only $1.3 \pm 1.1$ detections per frequency band are expected by chance. For sources without a detection of polarized emission, we find that half of the sources have polarization amplitudes below 90 mJy (Q-band) and 106 mJy (W-band), at 95% confidence. Finally, we compare our polarization measurements to intensity and polarization measurements of the same sources from the literature. For the four sources with WMAP and Planck intensity measurements $>1$ Jy, the polarization fraction are above 1% in both QUIET bands. At high significance, we compute polarization fractions as much as 10--20% for some sources, but the effects of source variability may cut that level in half for contemporaneous comparisons. Our results indicate that simple models---ones that scale a fixed polarization fraction with frequency---are inadequate to model the behavior of these sources and their contributions to polarization maps., 16 pages, 10 figures. Submitted to ApJ

Published
2015

41. Characterizing Atacama B-mode Search Detectors with a Half-Wave Plate

Author

Srinivasan Raghunathan, Kevin T. Crowley, Shuay-Pwu Patty Ho, Sara M. Simon, Akito Kusaka, Suzanne T. Staggs, Patricio M. Gallardo, Thomas Essinger-Hileman, Gonzalo A. Palma, Luis E. Campusano, John W. Appel, L. A. Page, Steve K. Choi, Federico Nati, Simon, S, Appel, J, Campusano, L, Choi, S, Crowley, K, Essinger-Hileman, T, Gallardo, P, Ho, S, Kusaka, A, Nati, F, Palma, G, Page, L, Raghunathan, S, and Staggs, S

Subjects
and Optic, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Astrophysics::High Energy Astrophysical Phenomena, Cosmic microwave background, FOS: Physical sciences, Condensed Matter Physic, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, law.invention, Telescope, Optics, law, Polarization, Atomic and Molecular Physics, 0103 physical sciences, General Materials Science, Atacama B-Mode Search, Half-wave plate, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Astrophysics::Galaxy Astrophysics, Physics, Atacama B-mode Search, 010308 nuclear & particles physics, Gravitational wave, business.industry, Bolometer, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Polarization (waves), Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Atomic and Molecular Physic, 13. Climate action, Materials Science (all), Astrophysics::Earth and Planetary Astrophysics, and Optics, business, Astrophysics - Instrumentation and Methods for Astrophysics, Noise (radio), Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The Atacama B-Mode Search (ABS) instrument is a cryogenic ($\sim$10 K) crossed-Dragone telescope located at an elevation of 5190 m in the Atacama Desert in Chile that observed for three seasons between February 2012 and October 2014. ABS observed the Cosmic Microwave Background (CMB) at large angular scales ($40, Comment: 7 pages, 3 figures, conference proceedings submitted to the Journal of Low Temperature Detectors

Published
2015
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42. Angular and Polarization Response of Multimode Sensors with Resistive-Grid Absorbers

Author

Akito Kusaka, Thomas R. Stevenson, and Edward J. Wollack

Subjects
Physics - Instrumentation and Detectors, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Impedance of free space, FOS: Physical sciences, law.invention, Optics, law, Reflection coefficient, Instrumentation and Methods for Astrophysics (astro-ph.IM), Physics, Resistive touchscreen, business.industry, Bolometer, Detector, Instrumentation and Detectors (physics.ins-det), Polarization (waves), Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Optoelectronics, Acceptance angle, Computer Vision and Pattern Recognition, business, Astrophysics - Instrumentation and Methods for Astrophysics, Microwave, Astrophysics - Cosmology and Nongalactic Astrophysics, Physics - Optics, Optics (physics.optics)
Abstract

High sensitivity receiver systems with near ideal polarization sensitivity are highly desirable for development of millimeter and sub-millimeter radio astronomy. Multimoded bolometers provide a unique solution to achieve such sensitivity, for which hundreds of single-mode sensors would otherwise be required. The primary concern in employing such multimoded sensors for polarimetery is the control of the polarization systematics. In this paper, we examine the angular- and polarization- dependent absorption pattern of a thin resistive grid or membrane, which models an absorber used for a multimoded bolometer. The result shows that a freestanding thin resistive absorber with a surface resistivity of \eta/2, where \eta\ is the impedance of free space, attains a beam pattern with equal E- and H-plane responses, leading to zero cross polarization. For a resistive-grid absorber, the condition is met when a pair of grids is positioned orthogonal to each other and both have a resistivity of \eta/2. When a reflective backshort termination is employed to improve absorption efficiency, the cross-polar level can be suppressed below -30 dB if acceptance angle of the sensor is limited to, Comment: 22 pages, 15 figures

Published
2014
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43. Erratum to: In Situ Time Constant and Optical Efficiency Measurements of TRUCE Pixels in the Atacama B-Mode Search

Author

Srinivasan Raghunathan, Michael D. Niemack, S. M. Simon, Katerina Visnjic, L. P. Parker, J. Sievers, T. Essinger Hileman, Kent D. Irwin, Akito Kusaka, L. A. Page, M. R. Nolta, H. M. Cho, S. T. Staggs, and J. W. Appel

Subjects
Optical efficiency, In situ, Physics, Optics, Pixel, business.industry, Time constant, General Materials Science, Atacama B-Mode Search, Condensed Matter Physics, business, Atomic and Molecular Physics, and Optics
Published
2015

44. First season quiet observations: Measurements of cosmic microwave background polarization power spectra at 43 GHz in the multipole range 25 ≤ ℓ ≤ 475

Author

I. Buder, Kevin M. Huffenberger, R. N. Dumoulin, Amber Miller, J. May, R. Monsalve, J. Zuntz, Ingunn Kathrine Wehus, T. C. Gaier, Colin A. Bischoff, Jeff McMahon, K. M. Smith, D. F. E. Samtleben, Michele Limon, Ricardo Bustos, Osamu Tajima, G. W. Nixon, S. T. Staggs, Laura Newburgh, J. L. Richards, K. Vanderlinde, B. Winstein, A. C. S. Readhead, A. Brizius, Masaya Hasegawa, Sigurd Naess, Martin C. Shepherd, Simon J. E. Radford, Sarah E. Church, M. D. Seiffert, Charles R. Lawrence, Lucio Piccirillo, K. A. Cleary, T. J. Pearson, H. K. Eriksen, Akito Kusaka, Leonardo Bronfman, Clive Dickinson, Masashi Hazumi, M. Jones, D. J. Kapner, Jonathan T. L. Zwart, J. O. Gundersen, Yuji Chinone, R. Williamson, H. Nguyen, Pekka Kangaslahti, K. L. Thompson, R. Reeves, and Pedro G. Ferreira

Subjects
Cosmic microwave background, Synchrotron radiation, cosmic background radiation, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, law.invention, Telescope, law, 0103 physical sciences, Astrophysics::Solar and Stellar Astrophysics, inflation, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Physics, polarization, Null (radio), 010308 nuclear & particles physics, Gravitational wave, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Polarization (waves), observations [cosmology], gravitational waves, Space and Planetary Science, QUIET, Astrophysics::Earth and Planetary Astrophysics, Multipole expansion
Abstract

The Q/U Imaging ExperimenT (QUIET) employs coherent receivers at 43GHz and 94GHz, operating on the Chajnantor plateau in the Atacama Desert in Chile, to measure the anisotropy in the polarization of the cosmic microwave background (CMB). QUIET primarily targets the B modes from primordial gravitational waves. The combination of these frequencies gives sensitivity to foreground contributions from diffuse Galactic synchrotron radiation. Between 2008 October and 2010 December, over 10,000hr of data were collected, first with the 19 element 43 GHz array (3458hr) and then with the 90 element 94 GHz array. Each array observes the same four fields, selected for low foregrounds, together covering ≈1000 deg2. This paper reports initial results from the 43 GHz receiver, which has an array sensitivity to CMB fluctuations of 69μK√s. The data were extensively studied with a large suite of null tests before the power spectra, determined with two independent pipelines, were examined. Analysis choices, including data selection, were modified until the null tests passed. Cross-correlating maps with different telescope pointings is used to eliminate a bias. This paper reports the EE, BB, and EB power spectra in the multipole range ℓ = 25-475. With the exception of the lowest multipole bin for one of the fields, where a polarized foreground, consistent with Galactic synchrotron radiation, is detected with 3σ significance, the E-mode spectrum is consistent with the ΛCDM model, confirming the only previous detection of the first acoustic peak. The B-mode spectrum is consistent with zero, leading to a measurement of the tensor-to-scalar ratio of r = 0.35+1.06 -0.87. The combination of a new time-stream "double-demodulation" technique, side-fed Dragonian optics, natural sky rotation, and frequent boresight rotation leads to the lowest level of systematic contamination in the B-mode power so far reported, below the level of r = 0.1. © 2011. The American Astronomical Society. All rights reserved.

Published
2011

45. Measurement ofCPasymmetries and branching fractions in a time-dependent Dalitz analysis ofB0→(ρπ)0and a constraint on the quark mixing angleϕ2

Author

I. Bedny, L. E. Piilonen, M. Tanaka, G. Pakhlova, M. Shapkin, H. J. Hyun, G. R. Moloney, Y. J. Kim, H. Ozaki, B. G. Cheon, Hirokazu Ishino, Kevin Varvell, Masashi Hazumi, R. Pestotnik, H. Miyake, I. Tikhomirov, A. Chen, A. Somov, S. K. Kim, J. Haba, Y. Miyazaki, D. H. Kah, W. T. Chen, A. Matyja, J. B. Singh, A. Ishikawa, Motoki Iwasaki, H. Kawai, N. Tamura, Y. Unno, D. Liventsev, D. Heffernan, R. Chistov, P. Krokovny, P. Chang, S. E. Lee, F. Takasaki, C. W. Park, H. Sahoo, S. K. Choi, Y. Iwasaki, P. Križan, H. Shibuya, G. S. Varner, Y. J. Kwon, S. Noguchi, S. Uno, C. Schwanda, T. Uglov, H. Aihara, S. Uehara, O. Schneider, A. Bondar, T. Sumiyoshi, F. Mandl, K. Belous, R. Itoh, A. Zupanc, Vladimir Zhulanov, K. Tamai, S. Korpar, Vladislav Balagura, M. E. Sevior, P. Wang, I. S. Cho, S. Suzuki, O. Nitoh, K. Trabelsi, V. M. Aulchenko, I. Adachi, C. P. Shen, J. H. Kang, L. S. Peak, E. L. Barberio, U. Bitenc, Joowon Lee, T. Nozaki, Y. Chao, S. Villa, R. Mizuk, Kazuhiko Hara, H. Kichimi, C. H. Wang, Z. P. Zhang, C. C. Wang, Y. Watanabe, Antonio Limosani, T. Iijima, Y. Yamashita, Y. Sakai, T. Lesiak, Rakesh Kumar, O. Zyukova, H. O. Kim, K. Vervink, B. Shwartz, Phillip Urquijo, M. Starič, J. Dalseno, K. Senyo, K. Ueno, Akito Kusaka, Yu-xi Liu, T. Kawasaki, E. Nakano, H. Miyata, Y. Hoshi, K. Hayasaka, S. W. Lin, T. E. Browder, S. Y. Suzuki, Tatiana Medvedeva, S. Okuno, T. Aushev, Y. Choi, K. Inami, Y. Teramoto, M. Nakao, S. McOnie, A. Kuzmin, M. Z. Wang, K. Kinoshita, S. Ogawa, C. C. Kuo, S. Eidelman, H. Park, A. Bozek, S. Nishida, H. Hayashii, X. L. Wang, A. M. Bakich, T. Ohshima, N. Gabyshev, A. J. Schwartz, M. J. Lee, M. Bračko, E. Won, M. Dash, B. Golob, Samo Stanič, W. S. Hou, K. Miyabayashi, and K. Arinstein

Subjects
Quark, Physics, Nuclear and High Energy Physics, Particle physics, Branching fraction, Electron–positron annihilation, media_common.quotation_subject, Dalitz plot, Weinberg angle, Asymmetry, Nuclear physics, Particle decay, Isospin, media_common
Abstract

Reference EPFL-ARTICLE-154414doi:10.1103/PhysRevD.77.072001View record in Web of Science Record created on 2010-11-05, modified on 2017-05-12

Published
2008

46. Experimental Constraints on the Spin and Parity of theΛc(2880)+

Author

Masashi Hazumi, S. Cole, Masahiro Fujikawa, L. S. Peak, K. Tanabe, P. Goldenzweig, J. S. H. Lee, R. Dowd, J. S. Kang, Takashi Kubota, Y. Uchida, G. R. Moloney, M. Grosse Perdekamp, N. Tamura, H. Stoeck, P. Krizan, H. Sahoo, B. Golob, James Mueller, A.E. Bondar, P. Krokovny, Z. Natkaniec, T. Uglov, Yoji Hasegawa, C. W. Park, E. Won, H. Sakaue, Y.T. Tsai, Yu Nakahama, Daniel Robert Marlow, Marco Barbero, K. Trabelsi, S. Banerjee, A. Murakami, Y. Iwasaki, V.N. Zhilich, W. A. Mitaroff, Young-Il Choi, K. Miyabayashi, B. Shwartz, T. Ziegler, Y. J. Kwon, O. Schneider, M. Yamauchi, Tariq Aziz, N. Kikuchi, Seema Bahinipati, R. Seidl, K. Hoshina, S. Nishida, Tapas Sarangi, M. Rozanska, Kevin Varvell, M. Shapkin, K. Aoki, M. Dash, J.H. Choi, Y. Choi, M. Iwabuchi, D. Epifanov, M. Starič, Yuji Enari, T. Higuchi, T. Seki, H. Nakazawa, G. Gokhroo, T. Hara, A. J. Schwartz, A. Matyja, Ilija Bizjak, V.A. Sidorov, M. Z. Wang, K. Kinoshita, S. Saitoh, Y.-T. Shen, K. Uchida, T. Aushev, R. Mizuk, Y.-J. Lee, V. M. Aulchenko, D. Anipko, H. Guler, S. Yoshino, K. S. Park, Antonio Limosani, N. Soni, M. C. Chang, Kimitaka Itoh, A. Kuzmin, J. S. Lange, J. Dragic, Vladislav Balagura, S. L. Olsen, H. Fujii, T. Mori, E. L. Barberio, Rakesh Kumar, Y. Usov, Y. F. Liu, Hiroshi Sakamoto, N. Takada, H. Palka, L. E. Piilonen, M. Bračko, S. Fratina, G. N. Taylor, T. Schietinger, Z. P. Zhang, G. Pakhlova, R. Kulasiri, S. Ogawa, S. Ono, Y. Igarashi, C. C. Wang, M. Pernicka, T. Matsumoto, W. S. Hou, W. Ostrowicz, A. Go, I. Adachi, K. Arinstein, Y. Mikami, E. Nakano, Y. Ushiroda, Y. Sakai, Sadaharu Uehara, E. Kurihara, Akito Kusaka, H. Miyake, R. Chistov, H. O. Kim, Y.F. Tse, A. Somov, Jie Zhang, A. Yamaguchi, Samo Stanič, A. Kibayashi, S. Uno, C. Schwanda, K. Inami, A. Imoto, S. R. Hou, M. Nakao, I. Bedny, J. Li, Gobinda Majumder, S. Noguchi, S. McOnie, S. Y. Suzuki, A. M. Bakich, T. Ohshima, J. MacNaughton, Anton Poluektov, Osamu Tajima, K. Nishimura, T. Tsukamoto, J. B. Singh, S. K. Choi, T. E. Browder, N. Gabyshev, You-Jin Yuan, K. Sumisawa, S. Villa, Y. Miyazaki, N. Satoyama, P. Schonmeier, T. J. Gershon, K. Neichi, A. Zupanc, A. Chuvikov, L. Hinz, H. Hayashii, Hyunyong Kim, S. L. Blyth, T. Hokuue, A. Sokolov, K. Ikado, M. Danilov, C. C. Kuo, O. Nitoh, I. Nakamura, Y. Kozakai, Y. Ban, K. Hara, Y. Yusa, S. U. Kataoka, T. Sumiyoshi, Jeremy Dalseno, Y. B. Hsiung, K. Sayeed, S. Eidelman, C.Y. Lin, N. Parslow, L. Widhalm, P. Pakhlov, H. Miyata, N. C. Hastings, Y. Hoshi, J. Schümann, Matthew Jones, K. Hayasaka, H. Park, A. Bozek, M. H. Tanaka, C. H. Wang, U. Bitenc, T.H. Kim, A. Drutskoy, Y. J. Kim, Hiroaki Aihara, Tatiana Medvedeva, Phillip Urquijo, H. Ozaki, C. Z. Yuan, Rainer Stamen, D. Mohapatra, I. Tikhomirov, H. Ha, M. Iwasaki, N. Katayama, C. C. Zhang, B. G. Cheon, H. Shibuya, M. Watanabe, M. D. Peters, J. Haba, L.M. Zhang, Frederic Jean Ronga, Y. Yamashita, R. Pestotnik, K. Belous, S. Korpar, Jolanta Brodzicka, H. Yamamoto, T. Nagamine, Nobuaki Sato, Shimpei Yamamoto, Y. Chao, C. Jacoby, N. Kishimoto, H. R. Khan, S. K. Kim, A. Chen, Toru Iijima, Y. Unno, Kazuo Abe, Y. Asano, P. Kapusta, S. Okuno, A. Ogawa, Andrej Gorišek, A. Garmash, Hirokazu Ishino, A. Ishikawa, Y. Teramoto, Bruce Yabsley, A. Bay, S.L. Zang, T. Okabe, Yasushi Nagasaka, S. E. Lee, T. Nozaki, S. W. Lin, F. Takasaki, D. Liventsev, N.I. Root, G. S. Varner, W. T. Chen, P. Chang, J. Wicht, Jung-Hyun Kim, R. Itoh, Q. L. Xie, Tsukasa Aso, T. Nakagawa, T. Arakawa, H. Kakuno, Kai-Feng Chen, K. Senyo, K. Ueno, T. Kawasaki, D. Zurcher, J. H. Kang, A. Sugiyama, Jamal Rorie, X. C. Tian, D. Heffernan, C.-H. Wu, Y. Watanabe, H. Kichimi, T. Tsuboyama, T. Lesiak, J. Wiechczynski, G. Leder, F. Mandl, K. Tamai, and M. E. Sevior

Subjects
Physics, Particle decay, Crystallography, Annihilation, KEKB, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Electron–positron annihilation, General Physics and Astronomy, Resonance, Continuum (set theory), Lambda, Quantum number
Abstract

We report the results of several studies of the {lambda}{sub c}{sup +}{pi}{sup +}{pi}{sup -}X final state in continuum e{sup +}e{sup -} annihilation data collected by the Belle detector. An analysis of angular distributions in {lambda}{sub c}(2880){sup +}{yields}{sigma}{sub c}(2455){sup 0,++}{pi}{sup +,-} decays strongly favors a {lambda}{sub c}(2880){sup +} spin assignment of (5/2) over (3/2) or (1/2). We find evidence for {lambda}{sub c}(2880){sup +}{yields}{sigma}{sub c}(2520){sup 0,++}{pi}{sup +,-} decay and measure the ratio of {lambda}{sub c}(2880){sup +} partial widths {gamma}({sigma}{sub c}(2520){pi})/{gamma}({sigma}{sub c}(2455){pi})=0.225{+-}0.062{+-}0.= 025. This value favors the {lambda}{sub c}(2880){sup +} spin-parity assignment of (5/2){sup +} over (5/2){sup -}. We also report the first observation of {lambda}{sub c}(2940){sup +}{yields}{sigma}{sub c}(2455){sup 0,++}{pi}{sup +,-} decay and measure {lambda}{sub c}(2880){sup +} and {lambda}{sub c}(2940){sup +} mass and width parameters. These studies are based on a 553 fb{sup -1} data sample collected at or near the {upsilon}(4S) resonance at the KEKB collider.

Published
2007

47. Improved Evidence for DirectCPViolation inB0→π+π−Decays and Model-Independent Constraints onϕ2

Author

R. Mizuk, Y. Sakai, Jie Zhang, L. S. Peak, C. C. Wang, S. R. Hou, M. Rozanska, A. Kibayashi, L. Hinz, S. Nishida, Akito Kusaka, K. Inami, S. L. Olsen, H. Kakuno, Noriaki K. Sato, U. Bitenc, Frederic Jean Ronga, M. Iwasaki, H. Miyata, K. Senyo, Y. Hoshi, T. Kawasaki, W. S. Hou, J. Schümann, N. C. Hastings, Y. Yamashita, K. Arinstein, C. H. Wang, Y. Choi, Kazuo Abe, B. D. Yabsley, T. Hara, Long Zhang, Heyoung Yang, S. Noguchi, A.S. Kuzmin, Y. Asano, P. Kapusta, Y. Iwasaki, Y. J. Kwon, T. Nagamine, S. Okuno, A. Bondar, T. Hokuue, M. Yamauchi, E. L. Barberio, T. Iijima, T. E. Browder, A. Imoto, O. Schneider, H. Shibuya, V.A. Sidorov, K. Ueno, I. Bizjak, S. Korpar, Jolanta Brodzicka, L. Y. Dong, J. H. Kang, G. S. Varner, C. C. Kuo, Andrej Gorišek, I. Nakamura, Daniel Robert Marlow, T. Aushev, H. Palka, L. E. Piilonen, A. M. Bakich, Z. Natkaniec, T. Schietinger, Zhenyu Zhang, Y. B. Hsiung, R. Itoh, P. Schonmeier, J. S. Kang, K. Hara, P. Pakhlov, F. Fang, Y. Teramoto, E. Nakano, H. Hayashii, M. H. Tanaka, T. Ohshima, Y. Ushiroda, Hiroyuki Sagawa, S. K. Choi, A. Drutskoy, H. Park, A. Bozek, M. Dash, T. Okabe, A. Chuvikov, S. Cole, S. Uno, B. Golob, A. Garmash, H. Miyake, M. Z. Wang, K. Kinoshita, Y. Watanabe, A. Yamaguchi, Jasvinder A. Singh, S. W. Lin, T. J. Gershon, N. Tamura, Gobinda Majumder, Phillip Urquijo, R. Chistov, Yuji Enari, H. Kichimi, Y. Chao, S. Eidelman, J. Dalseno, J. MacNaughton, T. Tsukamoto, H. R. Khan, Hirokazu Ishino, N. Soni, D. Žontar, P. Krokovny, K. Trabelsi, S. Blyth, N. Gabyshev, T. Tsuboyama, S. Fratina, Y. Ban, A. Somov, A. Ishikawa, A. Bay, T. Sumiyoshi, B. Shwartz, S. E. Lee, T. Nozaki, T. Lesiak, Byung Gu Cheon, H. Kawai, F. Takasaki, H. Ozaki, P. Križan, Y. Onuki, N. Parslow, S. Suzuki, G. Leder, Kevin Varvell, R. Pestotnik, W. T. Chen, Yasushi Nagasaka, Y. Mikami, A. Matyja, Y. Unno, P. Chang, S. M. Kim, K. F. Chen, F. Mandl, Q. L. Xie, J. Li, K. Tamai, M. E. Sevior, D. Zürcher, S. Uehara, N. Katayama, W. Ostrowicz, A. Chen, I. Adachi, Samo Stanič, A. Murakami, S. Villa, X. C. Tian, D. Mohapatra, J. Haba, H. Nakazawa, G. Gokhroo, A. J. Schwartz, Suneel Kumar, M. Nakao, M. Bračko, V.N. Zhilich, W. A. Mitaroff, Young-Il Choi, K. Miyabayashi, M. Starič, Osamu Tajima, O. Nitoh, Hiroaki Aihara, Rainer Stamen, S. Ogawa, Masashi Hazumi, T. Uglov, Marco Barbero, K. Sumisawa, and S. Y. Suzuki

Subjects
Physics, Particle physics, Crystallography, KEKB, 010308 nuclear & particles physics, Isospin, Electron–positron annihilation, 0103 physical sciences, General Physics and Astronomy, Resonance, CP violation, 010306 general physics, 01 natural sciences
Abstract

We present a new measurement of the time-dependent CP-violating parameters in B{sup 0}{yields}{pi}{sup +}{pi}{sup -} decays with 275x10{sup 6} BB pairs collected with the Belle detector at the KEKB asymmetric-energy e{sup +}e{sup -} collider operating at the {upsilon}(4S) resonance. We find 666{+-}43 B{sup 0}{yields}{pi}{sup +}{pi}{sup -} events and measure the CP-violating parameters: S{sub {pi}}{sub {pi}}=-0.67{+-}0.16(stat){+-}0.06(syst) and A{sub {pi}}{sub {pi}}=+0.56{+-}0.12(stat){+-}0.06(syst). We find evidence for large direct CP violation with a significance greater than 4 standard deviations for any S{sub {pi}}{sub {pi}} value. Using isospin relations, we obtain 95.4% confidence intervals for the Cabibbo-Kobayashi-Maskawa quark-mixing matrix angle {phi}{sub 2} of 0 deg.

Published
2005

48. Measurement of Time-DependentCP-Violating Asymmetries inB0→Ks0Ks0Ks0Decay

Author

Kazuo Abe, B. D. Yabsley, T. Tsukamoto, Y. Asano, S. Okuno, Andrej Gorišek, Byung Gu Cheon, Y. Teramoto, Osamu Tajima, Akito Kusaka, S. U. Kataoka, I. Bizjak, H. Miyake, G. S. Varner, T. Okabe, W. S. Hou, S. Cole, Simon Blyth, A. Somov, Tapas Sarangi, O. Nitoh, K. Inami, R. Itoh, Kevin Varvell, J. H. Kang, Long Zhang, S. Suzuki, A. Matyja, R. Mizuk, F. Fang, G. Gokhroo, H. Aihara, Noriaki K. Sato, J. Haba, L. S. Peak, A. Garmash, S. Fratina, Z. P. Zhang, T. Matsumoto, K. F. Chen, T. Iijima, H. Miyata, W. T. Chen, Y. Hoshi, Rainer Stamen, J. Dalseno, A. Kuzmin, U. Bitenc, A. Bondar, S. Korpar, J. B. Singh, N. Tamura, M. Tanaka, Jolanta Brodzicka, M. Nakao, T. Nozaki, A. Drutskoy, S. Uehara, S. Ogawa, H. J. Kim, Ho Kim, V.A. Sidorov, M. Starič, Q. L. Xie, N. Katayama, A. Ishikawa, Rolf Seuster, T. J. Gershon, T. Sumiyoshi, X. C. Tian, D. Žontar, H. Hayashii, Daniel Robert Marlow, Jia-ju Zhang, Motoki Iwasaki, Y. Ushiroda, F. Takasaki, C. W. Park, P. Križan, Y. Chao, Hiroyuki Sagawa, I. Adachi, K. Trabelsi, Hitoshi Yamamoto, K. Ueno, T. Kawasaki, V.N. Zhilich, S. Stanič, M. Z. Wang, H. R. Khan, Y. Iwasaki, Y. J. Kwon, K. Sumisawa, N. Parslow, K. Kinoshita, L. E. Piilonen, W. A. Mitaroff, S. Villa, Phillip Urquijo, O. Schneider, S. Uno, H. Shibuya, T. Schietinger, M. Dash, R. Kulasiri, T. Aushev, Heyoung Yang, Y. B. Hsiung, J. S. Lange, K. Miyabayashi, G. Leder, Masashi Hazumi, T. Hokuue, M. Yamauchi, M. Bračko, W. Ostrowicz, M. Rozanska, F. Mandl, K. Tamai, M. E. Sevior, V. M. Aulchenko, R. Chistov, T. Uglov, A. Imoto, A. M. Bakich, Z. Natkaniec, T. Ohshima, A. Chuvikov, S. M. Kim, N. Gabyshev, B. Golob, C. C. Wang, S. K. Kim, Y. Sakai, T. Higuchi, E. Nakano, C. H. Wang, Y. Yamashita, Yuji Enari, H. Kichimi, S. R. Hou, T. Tsuboyama, T. Lesiak, T. Nagamine, A. Yamaguchi, S. W. Lin, H. Ozaki, R. Pestotnik, A. Chen, P. Krokovny, Shaji Kumar, S. L. Olsen, S. Eidelman, H. Park, A. Bozek, T. E. Browder, M. Danilov, C. C. Kuo, K. Hara, S. Nishida, J. S. Kang, Hirokazu Ishino, H. Kawai, Y. Onuki, Y. Choi, T. Hara, and Yasushi Nagasaka

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, media_common.quotation_subject, Electron–positron annihilation, General Physics and Astronomy, Resonance, 01 natural sciences, Asymmetry, law.invention, Standard Model, Nuclear physics, KEKB, law, 0103 physical sciences, CP violation, High Energy Physics::Experiment, B meson, 010306 general physics, Collider, media_common
Abstract

We present a measurement of CP-violation parameters in the B0 --> K(s)0K(s)0K(s)0 decay based on a sample of 275 x 10(6) BB pairs collected at the upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. One neutral B meson is fully reconstructed in the decay B0 --> K(s)0K(s)0K(s)0, and the flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetry in the distributions of the proper-time interval between the two B decays: S = +1.26 +/- 0.68(stat) +/- 0.20(syst) and [symbol: see text] = +0.54 +/- 0.34(stat) +/- 0.09(syst).

Published
2005

49. CMB-S4 Science Book, First Edition

Author

Abazajian, Kevork N., Peter Adshead, Zeeshan Ahmed, Allen, Steven W., David Alonso, Arnold, Kam S., Carlo Baccigalupi, Bartlett, James G., Nicholas Battaglia, Benson, Bradford A., Bischoff, Colin A., Julian Borrill, Victor Buza, Erminia Calabrese, Robert Caldwell, Carlstrom, John E., Chang, Clarence L., Crawford, Thomas M., Francis-Yan Cyr-Racine, Francesco De Bernardis, Tijmen de Haan, Sperello di Serego Alighieri, Joanna Dunkley, Cora Dvorkin, Josquin Errard, Giulio Fabbian, Stephen Feeney, Simone Ferraro, Filippini, Jeffrey P., Raphael Flauger, Fuller, George M., Vera Gluscevic, Daniel Green, Daniel Grin, Evan Grohs, Henning, Jason W., Colin Hill, J., Renee Hlozek, Gilbert Holder, William Holzapfel, Wayne Hu, Huffenberger, Kevin M., Reijo Keskitalo, Lloyd Knox, Arthur Kosowsky, John Kovac, Kovetz, Ely D., Chao-Lin Kuo, Akito Kusaka, Maude Le Jeune, Lee, Adrian T., Marc Lilley, Marilena Loverde, Madhavacheril, Mathew S., Adam Mantz, Marsh, David J. E., Jeffrey McMahon, Pieter Meerburg, Joel Meyers, Miller, Amber D., Munoz, Julian B., Ho Nam Nguyen, Niemack, Michael D., Marco Peloso, Julien Peloton, Levon Pogosian, Clement Pryke, Marco Raveri, Reichardt, Christian L., Graca Rocha, Aditya Rotti, Emmanuel Schaan, Schmittfull, Marcel M., Douglas Scott, Neelima Sehgal, Sarah Shandera, Sherwin, Blake D., Smith, Tristan L., Lorenzo Sorbo, Starkman, Glenn D., Story, Kyle T., Alexander van Engelen, Vieira, Joaquin D., Scott Watson, Nathan Whitehorn, and Kimmy Wu, W. L.

Subjects
Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, QB
Abstract

This book lays out the scientific goals to be addressed by the next-generation ground-based cosmic microwave background experiment, CMB-S4, envisioned to consist of dedicated telescopes at the South Pole, the high Chilean Atacama plateau and possibly a northern hemisphere site, all equipped with new superconducting cameras. CMB-S4 will dramatically advance cosmological studies by crossing critical thresholds in the search for the B-mode polarization signature of primordial gravitational waves, in the determination of the number and masses of the neutrinos, in the search for evidence of new light relics, in constraining the nature of dark energy, and in testing general relativity on large scales.

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