Search

Your search keyword '"T. A. Morford"' showing total 25 results
Start Over Author "T. A. Morford"
25 results on '"T. A. Morford"'

1. A Constraint on Primordial B-modes from the First Flight of the Spider Balloon-borne Telescope

Author

P. A. R. Ade, M. Amiri, S. J. Benton, A. S. Bergman, R. Bihary, J. J. Bock, J. R. Bond, J. A. Bonetti, S. A. Bryan, H. C. Chiang, C. R. Contaldi, O. Doré, A. J. Duivenvoorden, H. K. Eriksen, M. Farhang, J. P. Filippini, A. A. Fraisse, K. Freese, M. Galloway, A. E. Gambrel, N. N. Gandilo, K. Ganga, R. Gualtieri, J. E. Gudmundsson, M. Halpern, J. Hartley, M. Hasselfield, G. Hilton, W. Holmes, V. V. Hristov, Z. Huang, K. D. Irwin, W. C. Jones, A. Karakci, C. L. Kuo, Z. D. Kermish, J. S.-Y. Leung, S. Li, D. S. Y. Mak, P. V. Mason, K. Megerian, L. Moncelsi, T. A. Morford, J. M. Nagy, C. B. Netterfield, M. Nolta, R. O’Brient, B. Osherson, I. L. Padilla, B. Racine, A. S. Rahlin, C. Reintsema, J. E. Ruhl, M. C. Runyan, T. M. Ruud, J. A. Shariff, E. C. Shaw, C. Shiu, J. D. Soler, X. Song, A. Trangsrud, C. Tucker, R. S. Tucker, A. D. Turner, J. F. van der List, A. C. Weber, I. K. Wehus, S. Wen, D. V. Wiebe, and E. Y. Young

Published
2022
Full Text
View/download PDF

2. In-Flight Gain Monitoring of SPIDER’s Transition-Edge Sensor Arrays

Author

J. P. Filippini, A. E. Gambrel, A. S. Rahlin, E. Y. Young, P. A. R. Ade, M. Amiri, S. J. Benton, A. S. Bergman, R. Bihary, J. J. Bock, J. R. Bond, J. A. Bonetti, S. A. Bryan, H. C. Chiang, C. R. Contaldi, O. Doré, A. J. Duivenvoorden, H. K. Eriksen, M. Farhang, A. A. Fraisse, K. Freese, M. Galloway, N. N. Gandilo, K. Ganga, R. Gualtieri, J. E. Gudmundsson, M. Halpern, J. Hartley, M. Hasselfield, G. Hilton, W. Holmes, V. V. Hristov, Z. Huang, K. D. Irwin, W. C. Jones, A. Karakci, C. L. Kuo, Z. D. Kermish, J. S.- Y. Leung, S. Li, D. S. Y. Mak, P. V. Mason, K. Megerian, L. Moncelsi, T. A. Morford, J. M. Nagy, C. B. Netterfield, M. Nolta, R. O’Brient, B. Osherson, I. L. Padilla, B. Racine, C. Reintsema, J. E. Ruhl, M. C. Runyan, T. M. Ruud, J. A. Shariff, E. C. Shaw, C. Shiu, J. D. Soler, X. Song, A. Trangsrud, C. Tucker, R. S. Tucker, A. D. Turner, J. F. van der List, A. C. Weber, I. K. Wehus, S. Wen, D. V. Wiebe, 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), 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
Bolometer, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, General Materials Science, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Astrophysics - Instrumentation and Methods for Astrophysics, Condensed Matter Physics, Transition edge sensor, Instrumentation and Methods for Astrophysics (astro-ph.IM), Atomic and Molecular Physics, and Optics, Cosmic microwave background
Abstract

Experiments deploying large arrays of transition-edge sensors (TESs) often require a robust method to monitor gain variations with minimal loss of observing time. We propose a sensitive and non-intrusive method for monitoring variations in TES responsivity using small square waves applied to the TES bias. We construct an estimator for a TES's small-signal power response from its electrical response that is exact in the limit of strong electrothermal feedback. We discuss the application and validation of this method using flight data from SPIDER, a balloon-borne telescope that observes the polarization of the cosmic microwave background with more than 2000 TESs. This method may prove useful for future balloon- and space-based instruments, where observing time and ground control bandwidth are limited., Comment: 7 pages, 3 figures; Proceedings of the 19th International Workshop on Low Temperature Detectors (LTD19); Minor updates to match published version

Published
2022

3. A Simulation-Based Method for Correcting Mode Coupling in CMB Angular Power Spectra

Author

J. S.-Y. Leung, J. Hartley, J. M. Nagy, C. B. Netterfield, J. A. Shariff, P. A. R. Ade, M. Amiri, S. J. Benton, A. S. Bergman, R. Bihary, J. J. Bock, J. R. Bond, J. A. Bonetti, S. A. Bryan, H. C. Chiang, C. R. Contaldi, O. Doré, A. J. Duivenvoorden, H. K. Eriksen, M. Farhang, J. P. Filippini, A. A. Fraisse, K. Freese, M. Galloway, A. E. Gambrel, N. N. Gandilo, K. Ganga, R. Gualtieri, J. E. Gudmundsson, M. Halpern, M. Hasselfield, G. Hilton, W. Holmes, V. V. Hristov, Z. Huang, K. D. Irwin, W. C. Jones, A. Karakci, C. L. Kuo, Z. D. Kermish, S. Li, D. S. Y. Mak, P. V. Mason, K. Megerian, L. Moncelsi, T. A. Morford, M. Nolta, R. O’Brient, B. Osherson, I. L. Padilla, B. Racine, A. S. Rahlin, C. Reintsema, J. E. Ruhl, M. C. Runyan, T. M. Ruud, E. C. Shaw, C. Shiu, J. D. Soler, X. Song, A. Trangsrud, C. Tucker, R. S. Tucker, A. D. Turner, J. F. van der List, A. C. Weber, I. K. Wehus, S. Wen, D. V. Wiebe, E. Y. Young, 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), 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
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Space and Planetary Science, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astronomy and Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Modern CMB analysis pipelines regularly employ complex time-domain filters, beam models, masking, and other techniques during the production of sky maps and their corresponding angular power spectra. However, these processes can generate couplings between multipoles from the same spectrum and from different spectra, in addition to the typical power attenuation. Within the context of pseudo-$C_\ell$ based, MASTER-style analyses, the net effect of the time-domain filtering is commonly approximated by a multiplicative transfer function, $F_{\ell}$, that can fail to capture mode mixing and is dependent on the spectrum of the signal. To address these shortcomings, we have developed a simulation-based spectral correction approach that constructs a two-dimensional transfer matrix, $J_{\ell\ell'}$, which contains information about mode mixing in addition to mode attenuation. We demonstrate the application of this approach on data from the first flight of the SPIDER balloon-borne CMB experiment., Comment: 14 pages, 7 figures; updated to match published version

Published
2021
Full Text
View/download PDF

4. Design and pre-flight performance of SPIDER 280 GHz receivers

Author

Jeffrey P. Filippini, Ingunn Kathrine Wehus, P. A. R. Ade, Peter Mason, Zigmund Kermish, Carlo R. Contaldi, X. Song, M. Galloway, Aurelien A. Fraisse, K. Ganga, I. L. Padilla, J. F. van der List, J. R. Bond, A. E. Gambrel, D. V. Wiebe, Michael R. Vissers, L. M. Fissel, Joel N. Ullom, Adriaan J. Duivenvoorden, Dan Becker, A. D. Turner, S. Akers, Steven J. Benton, Matthew Hasselfield, R. Gualtieri, Marzieh Farhang, J. J. Bock, S. Li, A. Trangsrud, M. R. Nolta, E. Y. Young, A. S. Bergman, O. Doré, Shyang Wen, M. C. Runyan, J. E. Ruhl, Warren Holmes, J. A. Beall, Calvin B. Netterfield, C. Tucker, H. C. Chiang, Carl D. Reintsema, A. C. Weber, C. Shiu, R. S. Tucker, Mandana Amiri, R. S. Domagalski, Susan Redmond, Lorenzo Moncelsi, Kent D. Irwin, K. G. Megerian, J. Austermann, Antoine Kahn, Johannes Hubmayr, J. M. Nagy, Sean Bryan, J. Hartley, Arpi Grigorian, W. C. Jones, Jon E. Gudmundsson, Shannon M. Duff, Natalie N. Gandilo, L. J. Romualdez, Viktor Hristov, Mark Halpern, R. Nie, Katherine Freese, A. Lennox, Gene C. Hilton, H. Thommesen, B. Osherson, E. C. Shaw, J. S.-Y. Leung, Jamil A. Shariff, H. K. Eriksen, Zhi-Feng Huang, T. A. Morford, Juan D. Soler, L. M. Mocanu, C. L. Kuo, Alexandra S. Rahlin, J. Van Lanen, Science and Technology Facilities Council (STFC), Science and Technology Facilities Council, 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), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Zmuidzinas, Jonas, and Gao, Jian-Rong

Subjects
scientific ballooning, cosmic microwave background, cosmological model, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Computer science, media_common.quotation_subject, Cosmic microwave background, scientific instrumentation, FOS: Physical sciences, cosmic background radiation: polarization, Astrophysics::Cosmology and Extragalactic Astrophysics, 7. Clean energy, B-mode: primordial, law.invention, Telescope, law, optical, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Instrumentation and Methods for Astrophysics (astro-ph.IM), Astrophysics::Galaxy Astrophysics, Remote sensing, media_common, Spider, polarization, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, millimeter wave instrumentation, Polarization (waves), transition-edge sensor, SPIDER, experimental equipment, Wide area, B-mode, Sky, astro-ph.CO, galaxy, Astrophysics - Instrumentation and Methods for Astrophysics, cosmology, performance, Dust emission, Astrophysics - Cosmology and Nongalactic Astrophysics, experimental results, astro-ph.IM
Abstract

In this work we describe upgrades to the Spider balloon-borne telescope in preparation for its second flight, currently planned for December 2021. The Spider instrument is optimized to search for a primordial B-mode polarization signature in the cosmic microwave background at degree angular scales. During its first flight in 2015, Spider mapped ~10% of the sky at 95 and 150 GHz. The payload for the second Antarctic flight will incorporate three new 280 GHz receivers alongside three refurbished 95- and 150 GHz receivers from Spider's first flight. In this work we discuss the design and characterization of these new receivers, which employ over 1500 feedhorn-coupled transition-edge sensors. We describe pre-flight laboratory measurements of detector properties, and the optical performance of completed receivers. These receivers will map a wide area of the sky at 280 GHz, providing new information on polarized Galactic dust emission that will help to separate it from the cosmological signal., 13 pages, 8 figures; as published in the conference proceedings for SPIE Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X (2020)

Published
2020

5. Particle response of antenna-coupled TES arrays: results from SPIDER and the lab

Author

Johanna Nagy, Steven J. Benton, W. A. Holmes, Carlo R. Contaldi, Gene C. Hilton, Jeffrey P. Filippini, D. V. Wiebe, Amy Trangsrud, A. S. Rahlin, J. E. Ruhl, Marcus Runyan, Calvin B. Netterfield, J. J. Bock, E. Young, E. C. Shaw, A. D. Turner, Carole Tucker, J. Fu, Sean Bryan, J. Hartley, O. Doré, H. C. Chiang, R. S. Tucker, Mandana Amiri, Kent D. Irwin, Natalie N. Gandilo, T. A. Morford, Carl D. Reintsema, Peter Mason, A. C. Weber, Jon E. Gudmundsson, A. E. Gambrel, Aurelien A. Fraisse, B. Osherson, R. Gualtieri, K. G. Megerian, W. C. Jones, Matthew Hasselfield, Jamil A. Shariff, Mark Halpern, Viktor Hristov, R. V. Gramillano, I. L. Padilla, Juan D. Soler, Peter A. R. Ade, Lorenzo Moncelsi, Zigmund Kermish, J. R. Bond, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112))

Subjects
General Physics, Physics - Instrumentation and Detectors, Bolometer, Transition-edge sensor, Astrophysics::High Energy Astrophysical Phenomena, Cosmic microwave background, 0204 Condensed Matter Physics, FOS: Physical sciences, Cosmic ray, 7. Clean energy, 01 natural sciences, Space exploration, Physics, Applied, 0203 Classical Physics, 010305 fluids & plasmas, law.invention, symbols.namesake, Optics, law, 0103 physical sciences, General Materials Science, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Planck, 010306 general physics, physics.ins-det, Instrumentation and Methods for Astrophysics (astro-ph.IM), Physics, Spider, Science & Technology, 0105 Mathematical Physics, business.industry, Astrophysics::Instrumentation and Methods for Astrophysics, Instrumentation and Detectors (physics.ins-det), Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Glitch, Physics, Condensed Matter, Physical Sciences, symbols, Antenna (radio), Astrophysics - Instrumentation and Methods for Astrophysics, business, astro-ph.IM
Abstract

Future mm-wave and sub-mm space missions will employ large arrays of multiplexed Transition Edge Sensor (TES) bolometers. Such instruments must contend with the high flux of cosmic rays beyond our atmosphere that induce "glitches" in bolometer data, which posed a challenge to data analysis from the Planck bolometers. Future instruments will face the additional challenges of shared substrate wafers and multiplexed readout wiring. In this work we explore the susceptibility of modern TES arrays to the cosmic ray environment of space using two data sets: the 2015 long-duration balloon flight of the SPIDER cosmic microwave background polarimeter, and a laboratory exposure of SPIDER flight hardware to radioactive sources. We find manageable glitch rates and short glitch durations, leading to minimal effect on SPIDER analysis. We constrain energy propagation within the substrate through a study of multi-detector coincidences, and give a preliminary look at pulse shapes in laboratory data., Comment: 9 pages, 6 figures, Proceedings of the 18th International Workshop on Low Temperature Detectors

Published
2019

6. 280 GHz Focal Plane Unit Design and Characterization for the Spider-2 Suborbital Polarimeter

Author

Gene C. Hilton, J. Austermann, A. E. Gambrel, W. Holmes, A. S. Bergman, Peter A. R. Ade, Lorenzo Moncelsi, R. S. Domagalski, C. Shiu, Ingunn Kathrine Wehus, L. J. Romualdez, Viktor Hristov, A. C. Weber, S. Li, Matthew Hasselfield, Laura M. Fissel, Jeffrey P. Filippini, Carl D. Reintsema, Jon E. Gudmundsson, M. Galloway, Kent D. Irwin, Marzieh Farhang, Marcus Runyan, Calvin B. Netterfield, Arpi Grigorian, W. C. Jones, Anthony D. Turner, S. Akers, H. C. Chiang, B. Racine, Carole Tucker, T. M. Ruud, Zhiqi Huang, R. Gualtieri, Donald V. Wiebe, Johanna Nagy, Susan Redmond, B. Osherson, J. F. van der List, A. Khan, James A. Beall, K. G. Megerian, Amy Trangsrud, Joel N. Ullom, S. Wen, Sean Bryan, J. Hartley, Jamil A. Shariff, Michael R. Vissers, Zigmund Kermish, Natalie N. Gandilo, P. V. Mason, Ivan L. Padilla, Adri Duivenvoorden, Johannes Hubmayr, Mark Halpern, E. C. Shaw, Ken Ganga, A. A. Fraisse, Steven J. Benton, H. K. Eriksen, Michael R. Nolta, T. A. Morford, Shannon M. Duff, Katherine Freese, Juan D. Soler, J. R. Bond, Carlo R. Contaldi, Chao-Lin Kuo, James J. Bock, J. E. Ruhl, R. S. Tucker, Mandana Amiri, X. Song, E. Y. Young, Daniel T. Becker, O. Doré, Alexandra S. Rahlin, J. Van Lanen, 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), SPIDER, 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), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Science and Technology Facilities Council (STFC), and Science and Technology Facilities Council

Subjects
Transition-edge sensors, Physics - Instrumentation and Detectors, Scientific ballooning, Cosmic microwave background, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Magnetic shielding, 01 natural sciences, 7. Clean energy, law.invention, Detector packaging, Optics, law, 0103 physical sciences, General Materials Science, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, 010303 astronomy & astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Astrophysics::Galaxy Astrophysics, Physics, Pixel, business.industry, Gravitational wave, Bolometer, Astrophysics::Instrumentation and Methods for Astrophysics, Polarimeter, Instrumentation and Detectors (physics.ins-det), Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Cardinal point, Amplitude, Electromagnetic shielding, business, Astrophysics - Instrumentation and Methods for Astrophysics, astro-ph.IM
Abstract

International audience; We describe the construction and characterization of the 280 GHz bolometric focal plane units (FPUs) to be deployed on the second flight of the balloon-borne Spider instrument. These FPUs are vital to Spider’s primary science goal of detecting or placing an upper limit on the amplitude of the primordial gravitational wave signature in the cosmic microwave background (CMB) by constraining the B-mode contamination in the CMB from Galactic dust emission. Each 280 GHz focal plane contains a $16 \times 16$ grid of corrugated silicon feedhorns coupled to an array of aluminum–manganese transition-edge sensor (TES) bolometers fabricated on 150 mm diameter substrates. In total, the three 280 GHz FPUs contain 1530 polarization-sensitive bolometers (765 spatial pixels) optimized for the low loading environment in flight and read out by time-division SQUID multiplexing. In this paper, we describe the mechanical, thermal, and magnetic shielding architecture of the focal planes and present cryogenic measurements which characterize yield and the uniformity of several bolometer parameters. The assembled FPUs have high yields, with one array as high as 95% including defects from wiring and readout. We demonstrate high uniformity in device parameters, finding the median saturation power for each TES array to be $\sim $ 3 pW at 300 mK with a less than 6% variation across each array at $1\sigma $ . These focal planes will be deployed alongside the 95 and 150 GHz telescopes in the Spider-2 instrument, slated to fly from McMurdo Station in Antarctica in December 2018.

Published
2018

7. A new limit on CMB circular polarization from SPIDER

Author

Marzieh Farhang, Michael R. Nolta, H. K. Eriksen, T. A. Morford, Juan D. Soler, M. Galloway, Carole Tucker, K. Ganga, Alexandra S. Rahlin, Kent D. Irwin, Carlo R. Contaldi, Peter A. R. Ade, Lorenzo Moncelsi, W. Holmes, Marcus Runyan, Jon E. Gudmundsson, S. Li, Calvin B. Netterfield, Katherine Freese, H. C. Chiang, A. E. Gambrel, E. Y. Young, J. R. Bond, A. A. Fraisse, Olivier Doré, Viktor Hristov, B. Racine, Ivan L. Padilla, P. V. Mason, Gene C. Hilton, Carl D. Reintsema, Zigmund Kermish, K. G. Megerian, Laura M. Fissel, Adri Duivenvoorden, Matthew Hasselfield, Zhiqi Huang, Ingunn Kathrine Wehus, X. Song, Jamil A. Shariff, Mark Halpern, Jeffrey P. Filippini, Amy Trangsrud, R. Bihary, Donald V. Wiebe, J. E. Ruhl, A. C. Weber, R. S. Tucker, Mandana Amiri, W. C. Jones, T. M. Ruud, Chao-Lin Kuo, A. S. Bergman, James J. Bock, Johanna Nagy, J. F. van der List, A. D. Turner, Sean Bryan, J. Hartley, Natalie N. Gandilo, Steven J. Benton, 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 AIM, Université Paris Diderot - Paris 7 ( UPD7 ) -Centre d'Etudes de Saclay, SPIDER, 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), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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 Paris Cité (UPCité), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-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), Science and Technology Facilities Council (STFC), 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, and PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)

Subjects
0306 Physical Chemistry (Incl. Structural), [ PHYS.ASTR ] Physics [physics]/Astrophysics [astro-ph], Cosmic microwave background, cosmic background radiation: polarization, cosmic background radiation, 0305 Organic Chemistry, 01 natural sciences, Waveplate, law.invention, law, 010303 astronomy & astrophysics, [ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], QC, QB, Physics, Linear polarization, Astrophysics::Instrumentation and Methods for Astrophysics, Polarization (waves), SPIDER, Physical Sciences, astro-ph.CO, spectrum: thermal, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), SUBMILLIMETER INSTRUMENTS, Cosmic background radiation, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astronomy & Astrophysics, Electromagnetic radiation, Telescope, cosmic background radiation: B-mode, HALF-WAVE PLATE, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], cosmic background radiation: power spectrum, inflation, Instrumentation and Methods for Astrophysics (astro-ph.IM), Circular polarization, polarization: linear, Science & Technology, 010308 nuclear & particles physics, Astronomy and Astrophysics, Computational physics, 0201 Astronomical And Space Sciences, Space and Planetary Science, MICROWAVE BACKGROUND ASTRONOMY, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], astro-ph.IM
Abstract

We present a new upper limit on CMB circular polarization from the 2015 flight of SPIDER, a balloon-borne telescope designed to search for $B$-mode linear polarization from cosmic inflation. Although the level of circular polarization in the CMB is predicted to be very small, experimental limits provide a valuable test of the underlying models. By exploiting the non-zero circular-to-linear polarization coupling of the HWP polarization modulators, data from SPIDER's 2015 Antarctic flight provide a constraint on Stokes $V$ at 95 and 150 GHz from $33, Comment: 9 pages, 4 figures, 5 tables - Updated to version accepted for publication in ApJ, modified acknowledgements

Published
2017

8. The cosmic infrared background experiment-2 (CIBER-2) for studying the near-infrared extragalactic background light

Author

Phillip Korngut, Kohji Tsumura, Toshio Matsumoto, James J. Bock, Peter Mason, Michael Zemcov, Yoshikazu Kanai, Asantha Cooray, Akito Enokuchi, Alicia Lanz, T. Arai, J. Battle, Won Kee Park, Takehiko Wada, Shiang-Yu Wang, Dae-Hee Lee, Kei Sano, Yosuke Ohnishi, Mai Shirahata, T. A. Morford, M. G. Kim, Shuji Matsuura, Norihide Takeyama, Viktor Hristov, MacEwen, Howard A., Fazio, Giovanni G., and Lystrup, Makenzie

Subjects
Physics, Galactic astronomy, 010308 nuclear & particles physics, Near-infrared spectroscopy, Astronomy, Astrophysics, 01 natural sciences, Redshift, Galaxy, law.invention, Telescope, Stars, Extragalactic background light, law, Cosmic infrared background, 0103 physical sciences, 010303 astronomy & astrophysics
Abstract

We present the current status of the Cosmic Infrared Background ExpeRiment-2 (CIBER-2) project, whose goal is to make a rocket-borne measurement of the near-infrared Extragalactic Background Light (EBL), under a collaboration with U.S.A., Japan, South Korea, and Taiwan. The EBL is the integrated light of all extragalactic sources of emission back to the early Universe. At near-infrared wavelengths, measurement of the EBL is a promising way to detect the diffuse light from the first collapsed structures at redshift z∼10, which are impossible to detect as individual sources. However, recently, the intra-halo light (IHL) model is advocated as the main contribution to the EBL, and our new result of the EBL fluctuation from CIBER-1 experiment is also supporting this model. In this model, EBL is contributed by accumulated light from stars in the dark halo regions of low- redshift (z

Published
2016

9. A cryogenic rotation stage with a large clear aperture for the half-wave plates in the Spider instrument

Author

T. E. Montroy, Marcus Runyan, Carlo R. Contaldi, Benjamin Saliwanchik, Jeffrey P. Filippini, Daniel Riley, Zigmund Kermish, C. Barth Netterfield, H. Cynthia Chiang, Mark Halpern, Carl D. Reintsema, Aurelien A. Fraisse, Jon E. Gudmundsson, B. P. Crill, A. E. Gambrel, Alexandra S. Rahlin, Warren Holmes, Olivier Doré, Juan D. Soler, Jamil A. Shariff, Benjamin Elder, Carole Tucker, Ivan L. Padilla, Matthew Hasselfield, Peter A. R. Ade, Lorenzo Moncelsi, E. Young, J. Richard Bond, Steven J. Benton, Kent D. Irwin, R. Bihary, Peter Mason, Viktor Hristov, T. A. Morford, Donald V. Wiebe, K. G. Megerian, Amy Trangsrud, C. Lawrie, Shyang Wen, J. E. Ruhl, W. C. Jones, R. S. Tucker, Mandana Amiri, Sean Bryan, Natalie N. Gandilo, C. J. MacTavish, Gene C. Hilton, James J. Bock, A. D. Turner, Johanna Nagy, and Science and Technology Facilities Council (STFC)

Subjects
Technology, business.product_category, Cosmology and Nongalactic Astrophysics (astro-ph.CO), POLARIZATION, Aperture, Cosmic microwave background, FOS: Physical sciences, SYSTEMATICS, Rotation, POLARIMETRY, 01 natural sciences, 09 Engineering, law.invention, Physics, Applied, 010309 optics, Telescope, Optics, law, 0103 physical sciences, 010303 astronomy & astrophysics, Instrumentation, Instrumentation and Methods for Astrophysics (astro-ph.IM), Instruments & Instrumentation, Applied Physics, Rotary encoder, Physics, Worm drive, Bearing (mechanical), Science & Technology, 02 Physical Sciences, business.industry, Liquid helium, Astrophysics::Instrumentation and Methods for Astrophysics, Physical Sciences, astro-ph.CO, business, 03 Chemical Sciences, Astrophysics - Instrumentation and Methods for Astrophysics, astro-ph.IM, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We describe the cryogenic half-wave plate rotation mechanisms built for and used in Spider, a polarization-sensitive balloon-borne telescope array that observed the Cosmic Microwave Background at 95 GHz and 150 GHz during a stratospheric balloon flight from Antarctica in January 2015. The mechanisms operate at liquid helium temperature in flight. A three-point contact design keeps the mechanical bearings relatively small but allows for a large (305 mm) diameter clear aperture. A worm gear driven by a cryogenic stepper motor allows for precise positioning and prevents undesired rotation when the motors are depowered. A custom-built optical encoder system monitors the bearing angle to an absolute accuracy of +/- 0.1 degrees. The system performed well in Spider during its successful 16 day flight., 11 pages, 7 figures, Published in Review of Scientific Instruments. v2 includes reviewer changes and longer literature review

Published
2015

10. Studying Extragalactic Background Fluctuations with the Cosmic Infrared Background ExpeRiment 2 (CIBER-2)

Author

James J. Bock, Yosuke Onishi, Asantha Cooray, Takehiko Wada, Alicia Lanz, Michael Zemcov, J. Battle, Dae-Hee Lee, Mai Shirahata, Peter Mason, Kohji Tsumura, Phillip Korngut, T. A. Morford, Shuji Matsuura, T. Arai, Toshio Matsumoto, Viktor Hristov, Oschmann, Jacobus M., Clampin, Mark, Fazio, Giovanni G., and MacEwen, Howard A.

Subjects
Physics, Galactic astronomy, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Quasar, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Redshift, Galaxy, Extragalactic background light, Cosmic infrared background, Galaxy formation and evolution, Reionization, Astrophysics::Galaxy Astrophysics
Abstract

Fluctuations in the extragalactic background light trace emission from the history of galaxy formation, including the emission from the earliest sources from the epoch of reionization. A number of recent near-infrared measure- ments show excess spatial power at large angular scales inconsistent with models of z < 5 emission from galaxies. These measurements have been interpreted as arising from either redshifted stellar and quasar emission from the epoch of reionization, or the combined intra-halo light from stars thrown out of galaxies during merging activity at lower redshifts. Though astrophysically distinct, both interpretations arise from faint, low surface brightness source populations that are difficult to detect except by statistical approaches using careful observations with suitable instruments. The key to determining the source of these background anisotropies will be wide-field imaging measurements spanning multiple bands from the optical to the near-infrared. The Cosmic Infrared Background ExpeRiment 2 (CIBER-2) will measure spatial anisotropies in the extra- galactic infrared background caused by cosmological structure using six broad spectral bands. The experiment uses three 2048 x 2048 Hawaii-2RG near-infrared arrays in three cameras coupled to a single 28.5 cm telescope housed in a reusable sounding rocket-borne payload. A small portion of each array will also be combined with a linear-variable filter to make absolute measurements of the spectrum of the extragalactic background with high spatial resolution for deep subtraction of Galactic starlight. The large field of view and multiple spectral bands make CIBER-2 unique in its sensitivity to fluctuations predicted by models of lower limits on the luminosity of the first stars and galaxies and in its ability to distinguish between primordial and foreground anisotropies. In this paper the scientific motivation for CIBER-2 and details of its first flight instrumentation will be discussed, including detailed designs of the mechanical, cryogenic, and electrical systems. Plans for the future will also be presented.

Published
2014

11. Attitude determination for balloon-borne experiments

Author

Matthew D. P. Truch, T. A. Morford, Alexandra S. Rahlin, A. L. Korotkov, A. A. Fraisse, Giles Novak, Juan D. Soler, Chao-Lin Kuo, A. E. Gambrel, Amy Trangsrud, Donald V. Wiebe, Jeff Klein, James J. Bock, Nicholas Thomas, Tony Mroczkowski, W. Holmes, Marzieh Farhang, Carlo R. Contaldi, P. V. Mason, Derek Ward-Thompson, Gregory S. Tucker, J. E. Ruhl, Jon E. Gudmundsson, W. C. Jones, A. C. Weber, Marcus Runyan, Calvin B. Netterfield, Carole Tucker, Sunil Golwala, R. S. Tucker, Mandana Amiri, Sean Bryan, Natalie N. Gandilo, Bradley Dober, Viktor Hristov, C. J. MacTavish, Carl D. Reintsema, Laura M. Fissel, Peter A. R. Ade, Frédérick Poidevin, Nicholas Galitzki, Johanna Nagy, Francesco E. Angilè, John Bond, Jeffrey P. Filippini, Gene C. Hilton, Mark Halpern, Lorenzo Moncelsi, Anthony D. Turner, Mark J. Devlin, Enzo Pascale, S. J. Benton, H. C. Chiang, Giorgio Savini, Douglas Scott, D. Nutter, Yasuo Fukui, Jamil A. Shariff, K. G. Megerian, Tristan G. Matthews, Zigmund Kermish, O. Doré, E. Y. Young, Roger O'Brient, Kent D. Irwin, B. P. Crill, Matthew Hasselfield, Stepp, Larry M., Gilmozzi, Roberto, and Hall, Helen J.

Subjects
Physics, business.industry, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, Polarimetry, FOS: Physical sciences, Gyroscope, law.invention, Telescope, Azimuth, Extended Kalman filter, 13. Climate action, law, Global Positioning System, Astrophysics - Instrumentation and Methods for Astrophysics, business, Instrumentation and Methods for Astrophysics (astro-ph.IM), High-altitude balloon, Astrophysics::Galaxy Astrophysics, Remote sensing
Abstract

An attitude determination system for balloon-borne experiments is presented. The system provides pointing information in azimuth and elevation for instruments flying on stratospheric balloons over Antarctica. In-flight attitude is given by the real-time combination of readings from star cameras, a magnetometer, sun sensors, GPS, gyroscopes, tilt sensors and an elevation encoder. Post-flight attitude reconstruction is determined from star camera solutions, interpolated by the gyroscopes using an extended Kalman Filter. The multi-sensor system was employed by the Balloon-borne Large Aperture Submillimeter Telescope for Polarimetry (BLASTPol), an experiment that measures polarized thermal emission from interstellar dust clouds. A similar system was designed for the upcoming flight of SPIDER, a Cosmic Microwave Background polarization experiment. The pointing requirements for these experiments are discussed, as well as the challenges in designing attitude reconstruction systems for high altitude balloon flights. In the 2010 and 2012 BLASTPol flights from McMurdo Station, Antarctica, the system demonstrated an accuracy of, 16 pages, 10 figures, Presented at SPIE Ground-based and Airborne Telescopes V, June 23, 2014. To be published in Proceedings of SPIE Volume 9145

Published
2014

12. Pre-flight integration and characterization of the SPIDER balloon-borne telescope

Author

Roger O'Brient, Alexandra S. Rahlin, Jeffrey P. Filippini, A. E. Gambrel, H. C. Chiang, O. Doré, T. A. Morford, Marzieh Farhang, Carl D. Reintsema, A. C. Weber, Juan D. Soler, Viktor Hristov, J. E. Ruhl, Sunil Golwala, Anthony D. Turner, A. A. Fraisse, Laura M. Fissel, Amy Trangsrud, Carole Tucker, S. J. Benton, W. C. Jones, Warren Holmes, B. P. Crill, Mark Halpern, Johanna Nagy, Jamil A. Shariff, Sean Bryan, Matthew Hasselfield, R. S. Tucker, Mandana Amiri, Natalie N. Gandilo, J. R. Bond, Donald V. Wiebe, Kent D. Irwin, Jon E. Gudmundsson, E. Young, K. G. Megerian, Chao-Lin Kuo, James J. Bock, Marcus Runyan, Carlo R. Contaldi, Calvin B. Netterfield, C. J. MacTavish, Zigmund Kermish, Gene C. Hilton, Peter A. R. Ade, Lorenzo Moncelsi, P. V. Mason, Holland, Wayne S., Zmuidzinas, Jonas, Holland, WS, and Zmuidzinas, J

Subjects
scientific ballooning, cosmic microwave background, Cosmology and Nongalactic Astrophysics (astro-ph.CO), media_common.quotation_subject, Cosmic microwave background, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astronomy & Astrophysics, Radio spectrum, symbols.namesake, Balloon-borne telescope, inflation, Planck, Instrumentation and Methods for Astrophysics (astro-ph.IM), Astrophysics::Galaxy Astrophysics, media_common, Physics, polarization, Spider, Science & Technology, Gravitational wave, Astrophysics::Instrumentation and Methods for Astrophysics, millimeter wave instrumentation, Astronomy, Optics, Polarimeter, transition-edge sensor, SPIDER, Sky, Physical Sciences, symbols, Astrophysics - Instrumentation and Methods for Astrophysics, cosmology, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present the results of integration and characterization of the SPIDER instrument after the 2013 pre-flight campaign. SPIDER is a balloon-borne polarimeter designed to probe the primordial gravitational wave signal in the degree-scale $B$-mode polarization of the cosmic microwave background. With six independent telescopes housing over 2000 detectors in the 94 GHz and 150 GHz frequency bands, SPIDER will map 7.5% of the sky with a depth of 11 to 14 $\mu$K$\cdot$arcmin at each frequency, which is a factor of $\sim$5 improvement over Planck. We discuss the integration of the pointing, cryogenic, electronics, and power sub-systems, as well as pre-flight characterization of the detectors and optical systems. SPIDER is well prepared for a December 2014 flight from Antarctica, and is expected to be limited by astrophysical foreground emission, and not instrumental sensitivity, over the survey region., Comment: 25 pages, 14 figures. Presented at SPIE Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII, June 26, 2014. To be published in Proceedings of SPIE Volume 9153

Published
2014
Full Text
View/download PDF

13. Pointing control for the SPIDER balloon-borne telescope

Author

Aurelien A. Fraisse, Olivier Doré, B. P. Crill, Roger O'Brient, Matthew Hasselfield, Carolyn J. MacTavish, Carole Tucker, C. Barth Netterfield, Gene C. Hilton, H. Cynthia Chiang, Donald V. Wiebe, Carlo R. Contaldi, A. E. Gambrel, W. C. Jones, Zigmund Kermish, Mark Halpern, Kent D. Irwin, Jeffrey P. Filippini, J. Richard Bond, Juan D. Soler, Alexandra S. Rahlin, Peter A. R. Ade, Lorenzo Moncelsi, J. E. Ruhl, E. Y. Young, T. A. Morford, R. S. Tucker, Mandana Amiri, Carl D. Reintsema, A. C. Weber, Chao-Lin Kuo, Jamie Bock, Jon E. Gudmundsson, Sunil Golwala, Marcus Runyan, Peter Mason, Warren Holmes, Amy Trangsrud, Steven J. Benton, Marzieh Farhang, Sean Bryan, Natalie N. Gandilo, Anthony D. Turner, Jamil A. Shariff, Viktor Hristov, Laura M. Fissel, K. G. Megerian, Johanna Nagy, Stepp, Larry M., and Gilmozzi, Roberto

Subjects
Physics, business.industry, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Gyroscope, Polarimeter, 01 natural sciences, Reaction wheel, law.invention, Azimuth, Telescope, Optics, law, Control system, 0103 physical sciences, Balloon-borne telescope, Astrophysics - Instrumentation and Methods for Astrophysics, 010306 general physics, business, 010303 astronomy & astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract

We present the technology and control methods developed for the pointing system of the SPIDER experiment. SPIDER is a balloon-borne polarimeter designed to detect the imprint of primordial gravitational waves in the polarization of the Cosmic Microwave Background radiation. We describe the two main components of the telescope's azimuth drive: the reaction wheel and the motorized pivot. A 13 kHz PI control loop runs on a digital signal processor, with feedback from fibre optic rate gyroscopes. This system can control azimuthal speed with < 0.02 deg/s RMS error. To control elevation, SPIDER uses stepper-motor-driven linear actuators to rotate the cryostat, which houses the optical instruments, relative to the outer frame. With the velocity in each axis controlled in this way, higher-level control loops on the onboard flight computers can implement the pointing and scanning observation modes required for the experiment. We have accomplished the non-trivial task of scanning a 5000 lb payload sinusoidally in azimuth at a peak acceleration of 0.8 deg/s$^2$, and a peak speed of 6 deg/s. We can do so while reliably achieving sub-arcminute pointing control accuracy., 20 pages, 12 figures, Presented at SPIE Ground-based and Airborne Telescopes V, June 23, 2014. To be published in Proceedings of SPIE Volume 9145

Published
2014
Full Text
View/download PDF

14. Design and construction of a carbon fiber gondola for the SPIDER balloon-borne telescope

Author

Marzieh Farhang, Juan D. Soler, Johanna Nagy, C. J. MacTavish, J. E. Ruhl, Gene C. Hilton, Peter A. R. Ade, Lorenzo Moncelsi, A. E. Gambrel, J. R. Bond, Aurelien A. Fraisse, W. A. Holmes, Alexandra S. Rahlin, S. J. Benton, C. C. Contaldi, B. P. Crill, T. A. Morford, R. S. Tucker, Carole Tucker, A. C. Weber, Mandana Amiri, Sean Bryan, Mark Halpern, A. D. Turner, Natalie N. Gandilo, Peter Mason, Z. K. Kermish, Matthew Hasselfield, C. Chiang, Carl D. Reintsema, W. C. Jones, Marcus Runyan, Amy Trangsrud, Calvin B. Netterfield, Chao-Lin Kuo, K. G. Megerian, J. J. Bock, O. Doré, Jeffrey P. Filippini, Sunil Golwala, Jon E. Gudmundsson, Jamil A. Shariff, E. Y. Young, Kent D. Irwin, Viktor Hristov, Laura M. Fissel, D. V. Wiebe, Stepp, Larry M., Gilmozzi, Roberto, and Hall, Helen J.

Subjects
Carbon fiber reinforced polymer, Spider, Physics - Instrumentation and Detectors, business.industry, Cosmic microwave background, Carbon fibers, Astrophysics::Instrumentation and Methods for Astrophysics, Structural integrity, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), 7. Clean energy, Finite element method, law.invention, Telescope, law, visual_art, visual_art.visual_art_medium, Environmental science, Balloon-borne telescope, Aerospace engineering, business, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM)
Abstract

We introduce the light-weight carbon fiber and aluminum gondola designed for the SPIDER balloon-borne telescope. SPIDER is designed to measure the polarization of the Cosmic Microwave Background radiation with unprecedented sensitivity and control of systematics in search of the imprint of inflation: a period of exponential expansion in the early Universe. The requirements of this balloon-borne instrument put tight constrains on the mass budget of the payload. The SPIDER gondola is designed to house the experiment and guarantee its operational and structural integrity during its balloon-borne flight, while using less than 10% of the total mass of the payload. We present a construction method for the gondola based on carbon fiber reinforced polymer tubes with aluminum inserts and aluminum multi-tube joints. We describe the validation of the model through Finite Element Analysis and mechanical tests., Comment: 16 pages, 11 figures. Presented at SPIE Ground-based and Airborne Telescopes V, June 23, 2014. To be published in Proceedings of SPIE Volume 9145

Published
2014
Full Text
View/download PDF

15. BLASTbus electronics: General-purpose readout and control for balloon-borne experiments

Author

J. R. Bond, O. Doré, T. A. Morford, B. Dober, Aurelien A. Fraisse, B. P. Crill, Nicholas Galitzki, N. N. Gandilo, Tony Mroczkowski, N. E. Thomas, M. Hasselfield, D. V. Wiebe, Mark Halpern, Jacob Klein, Marzieh Farhang, Kent D. Irwin, S. R. Golwala, Calvin B. Netterfield, C. J. MacTavish, A. Trangsrud, M. Amiri, Yasuo Fukui, K. G. Megerian, Juan D. Soler, Sean Bryan, Francisco E. Angile, Gene C. Hilton, Carlo R. Contaldi, Gregory S. Tucker, W. A. Holmes, Jeffrey P. Filippini, F. Poidevin, Jamil A. Shariff, C. L. Kuo, A. D. Turner, Tristan G. Matthews, Douglas Scott, Matthew D. P. Truch, Carole Tucker, H. C. Chiang, R. W. Ogburn, Peter Mason, A. L. Korotkov, David John Nutter, M. J. Devlin, Derek Ward-Thompson, C. D. Reintsema, C. D. Dowell, A. C. Weber, Enzo Pascale, Jon E. Gudmundsson, Zigmund Kermish, Alexandra S. Rahlin, S. J. Benton, E. Y. Young, Johanna Nagy, L. M. Fissel, Giorgio Savini, Peter A. R. Ade, Lorenzo Moncelsi, Giles Novak, James J. Bock, W. C. Jones, M. C. Runyan, J. E. Ruhl, R. S. Tucker, A. E. Gambrel, V. V. Hristov, Roger O'Brient, Stepp, Larry M., Gilmozzi, Roberto, and Hall, Helen J.

Subjects
Digital signal processor, Motherboard, Computer science, FOS: Physical sciences, balloon-borne telescope, 7. Clean energy, 01 natural sciences, BLASTbus, 010309 optics, Gate array, 0103 physical sciences, Electronic, bolometer readout, attitude control, BLASTPol, cryogenics, Spider, Electronic, Optical and Magnetic Materials, Condensed Matter Physics, Computer Science Applications1707 Computer Vision and Pattern Recognition, Applied Mathematics, Electrical and Electronic Engineering, Electronics, Optical and Magnetic Materials, Field-programmable gate array, Instrumentation and Methods for Astrophysics (astro-ph.IM), 010303 astronomy & astrophysics, Digital signal processing, business.industry, Electrical engineering, Analog signal, Astrophysics - Instrumentation and Methods for Astrophysics, business
Abstract

We present the second generation BLASTbus electronics. The primary purposes of this system are detector readout, attitude control, and cryogenic housekeeping, for balloon-borne telescopes. Readout of neutron transmutation doped germanium (NTD-Ge) bolometers requires low noise and parallel acquisition of hundreds of analog signals. Controlling a telescope's attitude requires the capability to interface to a wide variety of sensors and motors, and to use them together in a fast, closed loop. To achieve these different goals, the BLASTbus system employs a flexible motherboard-daughterboard architecture. The programmable motherboard features a digital signal processor (DSP) and field-programmable gate array (FPGA), as well as slots for three daughterboards. The daughterboards provide the interface to the outside world, with versions for analog to digital conversion, and optoisolated digital input/output. With the versatility afforded by this design, the BLASTbus also finds uses in cryogenic, thermometry, and power systems. For accurate timing control to tie everything together, the system operates in a fully synchronous manner. BLASTbus electronics have been successfully deployed to the South Pole, and flown on stratospheric balloons., Presented at SPIE Ground-based and Airborne Telescopes V, June 23, 2014. To be published in Proceedings of SPIE Volume 9145

Published
2014

16. Thermal architecture for the SPIDER flight cryostat

Author

J. E. Gudmundsson, P. A. R. Ade, M. Amiri, S. J. Benton, R. Bihary, J. J. Bock, J. R. Bond, J. A. Bonetti, S. A. Bryan, B. Burger, H. C. Chiang, C. R. Contaldi, B. P. Crill, O. Doré, M. Farhang, J. Filippini, L. M. Fissel, N. N. Gandilo, S. R. Golwala, M. Halpern, M. Hasselfield, G. Hilton, W. Holmes, V. V. Hristov, K. D. Irwin, W. C. Jones, C. L. Kuo, C. J. MacTavish, P. V. Mason, T. E. Montroy, T. A. Morford, C. B. Netterfield, D. T. O'Dea, A. S. Rahlin, C. D. Reintsema, J. E. Ruhl, M. C. Runyan, M. A. Schenker, J. A. Shariff, J. D. Soler, A. Trangsrud, C. Tucker, R. S. Tucker, A. D. Turner, Holland, Wayne S., and Zmuidzinas, Jonas

Subjects
Cryostat, Materials science, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, chemistry.chemical_element, Shields, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, law.invention, 010309 optics, Optics, law, 0103 physical sciences, Thermal, 010306 general physics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Helium, Liquid helium, business.industry, Astrophysics::Instrumentation and Methods for Astrophysics, Instrumentation and Detectors (physics.ins-det), chemistry, Thermal radiation, business, Astrophysics - Instrumentation and Methods for Astrophysics, Superfluid helium-4, Microwave
Abstract

We describe the cryogenic system for SPIDER, a balloon-borne microwave polarimeter that will map 8% of the sky with degree-scale angular resolution. The system consists of a 1284 L liquid helium cryostat and a 16 L capillary-filled superfluid helium tank, which provide base operating temperatures of 4 K and 1.5 K, respectively. Closed-cycle helium-3 adsorption refrigerators supply sub-Kelvin cooling power to multiple focal planes, which are housed in monochromatic telescope inserts. The main helium tank is suspended inside the vacuum vessel with thermally insulating fiberglass flexures, and shielded from thermal radiation by a combination of two vapor cooled shields and multi-layer insulation. This system allows for an extremely low instrumental background and a hold time in excess of 25 days. The total mass of the cryogenic system, including cryogens, is approximately 1000 kg. This enables conventional long duration balloon flights. We will discuss the design, thermal analysis, and qualification of the cryogenic system., 11 pages, 4 figures; as published in the conference proceedings for SPIE Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V (2010)

Published
2011

17. Design and performance of the Spider instrument

Author

Amy Trangsrud, Kent D. Irwin, S. J. Benton, Marzieh Farhang, Alexandra S. Rahlin, Carlo R. Contaldi, Jeffrey P. Filippini, M. Hasselfield, Peter A. R. Ade, Mark Halpern, Jamil A. Shariff, Olivier Doré, R. Bihary, Anthony D. Turner, Marcus Runyan, John Bond, T. A. Morford, Calvin B. Netterfield, Sunil Golwala, Carole Tucker, H. C. Chiang, Jon E. Gudmundsson, Sean Bryan, Peter Mason, Carl D. Reintsema, Natalie N. Gandilo, Viktor Hristov, W. C. Jones, Laura M. Fissel, J. E. Ruhl, Juan D. Soler, T. E. Montroy, J. A. Bonetti, D. O'Dea, Warren Holmes, Matthew A. Schenker, R. S. Tucker, Mandana Amiri, Chao-Lin Kuo, James J. Bock, B. P. Crill, C. J. MacTavish, Gene C. Hilton, Holland, Wayne S., and Zmuidzinas, Jonas

Subjects
Spider, 010308 nuclear & particles physics, Computer science, business.industry, media_common.quotation_subject, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Design elements and principles, Astrophysics::Cosmology and Extragalactic Astrophysics, Polarization (waves), 01 natural sciences, Multiplexer, Optics, Cardinal point, Sky, 0103 physical sciences, Electromagnetic shielding, 010306 general physics, business, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), media_common
Abstract

Here we describe the design and performance of the Spider instrument. Spider is a balloon-borne cosmic microwave background polarization imager that will map part of the sky at 90, 145, and 280 GHz with sub-degree resolution and high sensitivity. This paper discusses the general design principles of the instrument inserts, mechanical structures, optics, focal plane architecture, thermal architecture, and magnetic shielding of the TES sensors and SQUID multiplexer. We also describe the optical, noise, and magnetic shielding performance of the 145 GHz prototype instrument insert., 12 pages, 5 figures, Proceedings of SPIE, Astronomical Telescopes and Instrumentation 2010, San Diego, CA

Published
2011

18. Modeling and characterization of the SPIDER half-wave plate

Author

B. P. Crill, J. A. Bonetti, Matthew Hasselfield, Warren Holmes, Jamil A. Shariff, Jeffrey P. Filippini, Kent D. Irwin, D. O'Dea, Viktor Hristov, R. Bihary, Laura M. Fissel, C. Barth Netterfield, Carl D. Reintsema, Carlo R. Contaldi, T. A. Morford, Peter A. R. Ade, Peter Mason, Alexandra S. Rahlin, S. J. Benton, Juan D. Soler, Mark Halpern, H. Cynthia Chiang, Kyle Helson, Daniel Riley, Olivier Doré, Sunil Golwala, Jon E. Gudmundsson, Matthew A. Schenker, Anthony D. Turner, Marcus Runyan, T. E. Montroy, Amy Transrud, Sean Bryan, Natalie N. Gandilo, J. Richard Bond, C. J. MacTavish, J. E. Ruhl, Gene C. Hilton, Carole Tucker, W. C. Jones, Marzieh Farhang, Chao-Lin Kuo, James J. Bock, R. S. Tucker, Mandana Amiri, Holland, Wayne S., and Zmuidzinas, Jonas

Subjects
Physics, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Physics::Instrumentation and Detectors, business.industry, Bolometer, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Physical optics, Polarization (waves), Waveplate, Particle detector, law.invention, Telescope, Optics, law, Astrophysics - Instrumentation and Methods for Astrophysics, business, Instrumentation and Methods for Astrophysics (astro-ph.IM), Microwave, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Spider is a balloon-borne array of six telescopes that will observe the Cosmic Microwave Background. The 2624 antenna-coupled bolometers in the instrument will make a polarization map of the CMB with approximately one-half degree resolution at 145 GHz. Polarization modulation is achieved via a cryogenic sapphire half-wave plate (HWP) skyward of the primary optic. We have measured millimeter-wave transmission spectra of the sapphire at room and cryogenic temperatures. The spectra are consistent with our physical optics model, and the data gives excellent measurements of the indices of A-cut sapphire. We have also taken preliminary spectra of the integrated HWP, optical system, and detectors in the prototype Spider receiver. We calculate the variation in response of the HWP between observing the CMB and foreground spectra, and estimate that it should not limit the Spider constraints on inflation.

Published
2010

19. SPIDER: a balloon-borne CMB polarimeter for large angular scales

Author

C. J. MacTavish, Jeffrey P. Filippini, Gene C. Hilton, B. Burger, Carlo R. Contaldi, Olivier Doré, Jamil A. Shariff, B. P. Crill, Chao-Lin Kuo, James J. Bock, Peter Mason, Viktor Hristov, Marzieh Farhang, J. A. Bonetti, Jon E. Gudmundsson, Warren Holmes, Kent D. Irwin, R. S. Tucker, Mandana Amiri, Matthew A. Schenker, J. R. Bond, Laura M. Fissel, J. E. Ruhl, W. C. Jones, Carole Tucker, D. O'Dea, Juan D. Soler, H. C. Chiang, Carl D. Reintsema, T. A. Morford, Marcus Runyan, Calvin B. Netterfield, Peter A. R. Ade, Sean Bryan, Natalie N. Gandilo, Anthony D. Turner, S. J. Benton, Mark Halpern, T. E. Montroy, R. Bihary, Amy Trangsrud, Alexandra S. Rahlin, M. Hasselfield, Sunil Golwala, Holland, Wayne S., and Zmuidzinas, Jonas

Subjects
Physics, Spider, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Gravitational wave, Aperture, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, law.invention, Telescope, law, Refracting telescope, 0103 physical sciences, Angular resolution, Transition edge sensor, Astrophysics - Instrumentation and Methods for Astrophysics, 010306 general physics, 010303 astronomy & astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We describe SPIDER, a balloon-borne instrument to map the polarization of the millimeter-wave sky with degree angular resolution. Spider consists of six monochromatic refracting telescopes, each illuminating a focal plane of large-format antenna-coupled bolometer arrays. A total of 2,624 superconducting transition-edge sensors are distributed among three observing bands centered at 90, 150, and 280 GHz. A cold half-wave plate at the aperture of each telescope modulates the polarization of incoming light to control systematics. Spider's first flight will be a 20-30-day Antarctic balloon campaign in December 2011. This flight will map \sim8% of the sky to achieve unprecedented sensitivity to the polarization signature of the gravitational wave background predicted by inflationary cosmology. The Spider mission will also serve as a proving ground for these detector technologies in preparation for a future satellite mission., Comment: 12 pages, 6 figures; as published in the conference proceedings for SPIE Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V (2010)

Published
2010

20. SPIDER: probing the early Universe with a suborbital polarimeter

Author

C. N. Clark, Carole Tucker, J. A. Bonetti, H. C. Chiang, Marzieh Farhang, Warren Holmes, B. P. Crill, R. S. Tucker, Amy Trangsrud, Mandana Amiri, W. C. Jones, Marcus Runyan, Jamil A. Shariff, Calvin B. Netterfield, Peter A. R. Ade, Juan D. Soler, Sunil Golwala, Viktor Hristov, A. A. Fraisse, Laura M. Fissel, Carl D. Reintsema, T. E. Montroy, C. J. MacTavish, Sean Bryan, Kent D. Irwin, Carlo R. Contaldi, G. Davis, Gene C. Hilton, Natalie N. Gandilo, Matthew A. Schenker, Chao-Lin Kuo, J. R. Bond, Jeffrey P. Filippini, T. A. Morford, B. Burger, Jon E. Gudmundsson, James J. Bock, Alexandra S. Rahlin, J. E. Ruhl, S. J. Benton, M. Hasselfield, O. Doré, Anthony D. Turner, D. O'Dea, Peter Mason, and Donald V. Wiebe

Subjects
Physics, Systematic error, Spider, Cosmology and Nongalactic Astrophysics (astro-ph.CO), 010308 nuclear & particles physics, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astronomy and Astrophysics, Polarimeter, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Polarization (waves), 01 natural sciences, symbols.namesake, Amplitude, 0103 physical sciences, symbols, Stokes parameters, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics, Cosmic dust
Abstract

We evaluate the ability of SPIDER, a balloon-borne polarimeter, to detect a divergence-free polarization pattern ("B-modes") in the Cosmic Microwave Background (CMB). In the inflationary scenario, the amplitude of this signal is proportional to that of the primordial scalar perturbations through the tensor-to-scalar ratio r. We show that the expected level of systematic error in the SPIDER instrument is significantly below the amplitude of an interesting cosmological signal with r=0.03. We present a scanning strategy that enables us to minimize uncertainty in the reconstruction of the Stokes parameters used to characterize the CMB, while accessing a relatively wide range of angular scales. Evaluating the amplitude of the polarized Galactic emission in the SPIDER field, we conclude that the polarized emission from interstellar dust is as bright or brighter than the cosmological signal at all SPIDER frequencies (90 GHz, 150 GHz, and 280 GHz), a situation similar to that found in the "Southern Hole." We show that two ~20-day flights of the SPIDER instrument can constrain the amplitude of the B-mode signal to r, 29 pages, 8 figures, 4 tables; v2: matches published version, flight schedule updated, two typos fixed in Table 2, references and minor clarifications added, results unchanged

Published
2013

21. SPIDER OPTIMIZATION. II. OPTICAL, MAGNETIC, AND FOREGROUND EFFECTS

Author

C. N. Clark, T. E. Montroy, John Bond, B. P. Crill, H. C. Chiang, Amy Trangsrud, Olivier Doré, Peter A. R. Ade, Sean Bryan, Natalie N. Gandilo, Sunil Golwala, J. A. Bonetti, Donald V. Wiebe, Matthew A. Schenker, Carl D. Reintsema, Jamil A. Shariff, Kent D. Irwin, Warren Holmes, Peter Mason, Carlo R. Contaldi, G. Davis, Jeffrey P. Filippini, Alexandra S. Rahlin, Viktor Hristov, D. O'Dea, Anthony D. Turner, M. Hasselfield, C. J. MacTavish, Gene C. Hilton, Laura M. Fissel, Marcus Runyan, Marzieh Farhang, Calvin B. Netterfield, T. A. Morford, Jon E. Gudmundsson, Chao-Lin Kuo, Juan D. Soler, S. J. Benton, J. E. Ruhl, James J. Bock, W. C. Jones, A. A. Fraisse, R. S. Tucker, Mandana Amiri, B. Burger, and Carole Tucker

Subjects
Physics, Spider, Cosmology and Nongalactic Astrophysics (astro-ph.CO), Gravitational wave, media_common.quotation_subject, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic background radiation, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Polarization (waves), Cosmology, Amplitude, Space and Planetary Science, Sky, Astrophysics - Instrumentation and Methods for Astrophysics, Instrumentation and Methods for Astrophysics (astro-ph.IM), Astrophysics::Galaxy Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics, media_common
Abstract

Spider is a balloon-borne instrument designed to map the polarization of the cosmic microwave background (CMB) with degree-scale resolution over a large fraction of the sky. Spider's main goal is to measure the amplitude of primordial gravitational waves through their imprint on the polarization of the CMB if the tensor-to-scalar ratio, r, is greater than 0.03. To achieve this goal, instrumental systematic errors must be controlled with unprecedented accuracy. Here, we build on previous work to use simulations of Spider observations to examine the impact of several systematic effects that have been characterized through testing and modeling of various instrument components. In particular, we investigate the impact of the non-ideal spectral response of the half-wave plates, coupling between focal plane components and the Earth's magnetic field, and beam mismatches and asymmetries. We also present a model of diffuse polarized foreground emission based on a three-dimensional model of the Galactic magnetic field and dust, and study the interaction of this foreground emission with our observation strategy and instrumental effects. We find that the expected level of foreground and systematic contamination is sufficiently low for Spider to achieve its science goals., submitted to APJ, 15 pages, 12 figures

Published
2011

22. PRO program to focus efforts on two objectives

Author

T G, Morford

Subjects
Education, Medical, Professional Review Organizations, Organizational Objectives, Patient Advocacy, United States, Quality of Health Care
Published
1990

23. Nursing home regulation: history and expectations

Author

T G, Morford

Subjects
Certification, Medicaid, Medicare, Post-Acute and Long-Term Care, Facility Regulation and Control, United States, Forecasting, Nursing Homes
Abstract

This article contains a broad overview of the history of Federal regulation of nursing homes from the perspective of an individual involved directly for a number of years in the development and enforcement of Federal regulatory requirements. The article also contains a summary of the major statutory changes in the Omnibus Budget Reconciliation Act of 1987 that affect nursing homes. Finally, the results of these changes are projected in terms of new outcome-oriented requirements and a broad range of new enforcement authorities.

Published
1988

25. SPIDER: CMB polarimetry from the edge of space

Author

Carlo R. Contaldi, A. C. Weber, A. E. Gambrel, S. Li, W. Holmes, Carl D. Reintsema, Katherine Freese, W. C. Jones, T. M. Ruud, Alexandra S. Rahlin, Juan D. Soler, Steven J. Benton, Johanna Nagy, John Bond, Mark Halpern, J. F. van der List, Jon E. Gudmundsson, A. S. Bergman, X. Song, Chao-Lin Kuo, James J. Bock, P. V. Mason, Ingunn Kathrine Wehus, Zhiqi Huang, H. C. Chiang, O. Doré, Ivan L. Padilla, B. Osherson, Adri Duivenvoorden, Matthew Hasselfield, Marcus Runyan, M. Galloway, Calvin B. Netterfield, J. E. Ruhl, Carole Tucker, Gene C. Hilton, R. V. Gramillano, Sean Bryan, Jamil A. Shariff, Peter A. R. Ade, R. S. Tucker, Mandana Amiri, Lorenzo Moncelsi, J. Hartley, Kent D. Irwin, Natalie N. Gandilo, R. Gualtieri, Ken Ganga, Viktor Hristov, Amy Trangsrud, Michael R. Nolta, Laura M. Fissel, E. Y. Young, Jeffrey P. Filippini, Zigmund Kermish, Anthony D. Turner, Marzieh Farhang, B. Racine, K. G. Megerian, R. Bihary, Donald V. Wiebe, A. A. Fraisse, H. K. Eriksen, T. A. Morford, 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), Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), SPIDER, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), 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), Science and Technology Facilities Council (STFC), and Science and Technology Facilities Council

Subjects
Cosmic microwave background, cosmic background radiation, 01 natural sciences, General Materials Science, 010303 astronomy & astrophysics, media_common, Physics, 0105 Mathematical Physics, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, BICEP, Condensed Matter Physics, Polarization (waves), Bolometers, SPIDER, detector: upgrade, Atomic and Molecular Physics, and Optics, Physics, Condensed Matter, B-mode, Physical Sciences, astro-ph.CO, Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics, General Physics, Transition-edge sensors, Cosmology and Nongalactic Astrophysics (astro-ph.CO), detector: performance, media_common.quotation_subject, 0204 Condensed Matter Physics, Cosmic background radiation, Polarimetry, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Physics, Applied, 0203 Classical Physics, 0103 physical sciences, transition edge sensors, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Instrumentation and Methods for Astrophysics (astro-ph.IM), Astrophysics::Galaxy Astrophysics, Remote sensing, Spider, Science & Technology, 010308 nuclear & particles physics, Gravitational wave, gravitational radiation: primordial, Inflation, polarization: monitoring, Sky, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], astro-ph.IM
Abstract

SPIDER is a balloon-borne instrument designed to map the polarization of the millimeter-wave sky at large angular scales. SPIDER targets the B-mode signature of primordial gravitational waves in the cosmic microwave background (CMB), with a focus on mapping a large sky area with high fidelity at multiple frequencies. SPIDER's first longduration balloon (LDB) flight in January 2015 deployed a total of 2400 antenna-coupled Transition Edge Sensors (TESs) at 90 GHz and 150 GHz. In this work we review the design and in-flight performance of the SPIDER instrument, with a particular focus on the measured performance of the detectors and instrument in a space-like loading and radiation environment. SPIDER's second flight in December 2018 will incorporate payload upgrades and new receivers to map the sky at 285 GHz, providing valuable information for cleaning polarized dust emission from CMB maps., Comment: 10 pages, 7 figures, LTD17 Conference

Catalog

Books, media, physical & digital resources
See catalog results