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14 results on '"Cecil, TW"'

1. Measurement of the CMB temperature power spectrum and constraints on cosmology from the SPT-3G 2018 TT, TE, and EE dataset

Author

Balkenhol, L, Dutcher, D, Mancini, A Spurio, Doussot, A, Benabed, K, Galli, S, Ade, PAR, Anderson, AJ, Ansarinejad, B, Archipley, M, Bender, AN, Benson, BA, Bianchini, F, Bleem, LE, Bouchet, FR, Bryant, L, Camphuis, E, Carlstrom, JE, Cecil, TW, Chang, CL, Chaubal, P, Chichura, PM, Chou, T-L, Coerver, A, Crawford, TM, Cukierman, A, Daley, C, de Haan, T, Dibert, KR, Dobbs, MA, Everett, W, Feng, C, Ferguson, KR, Foster, A, Gambrel, AE, Gardner, RW, Goeckner-Wald, N, Gualtieri, R, Guidi, F, Guns, S, Halverson, NW, Hivon, E, Holder, GP, Holzapfel, WL, Hood, JC, Huang, N, Knox, L, Korman, M, Kuo, C-L, Lee, AT, Lowitz, AE, Lu, C, Millea, M, Montgomery, J, Nakato, Y, Natoli, T, Noble, GI, Novosad, V, Omori, Y, Padin, S, Pan, Z, Paschos, P, Prabhu, K, Quan, W, Rahimi, M, Rahlin, A, Reichardt, CL, Rouble, M, Ruhl, JE, Schiappucci, E, Smecher, G, Sobrin, JA, Stark, AA, Stephen, J, Suzuki, A, Tandoi, C, Thompson, KL, Thorne, B, Tucker, C, Umilta, C, Vieira, JD, Wang, G, Whitehorn, N, Wu, WLK, Yefremenko, V, Young, MR, and Zebrowski, JA

Subjects
Particle and High Energy Physics, Physical Sciences
Abstract

We present a sample-variance-limited measurement of the temperature power spectrum (TT) of the cosmic microwave background using observations of a ∼1500 deg2 field made by the SPT-3G in 2018. We report multifrequency power spectrum measurements at 95, 150, and 220 GHz covering the angular multipole range 750≤ℓ

Published
2023

2. The Design and Integrated Performance of SPT-3G

Author

Sobrin, JA, Anderson, AJ, Bender, AN, Benson, BA, Dutcher, D, Foster, A, Goeckner-Wald, N, Montgomery, J, Nadolski, A, Rahlin, A, Ade, PAR, Ahmed, Z, Anderes, E, Archipley, M, Austermann, JE, Avva, JS, Aylor, K, Balkenhol, L, Barry, PS, Thakur, R Basu, Benabed, K, Bianchini, F, Bleem, LE, Bouchet, FR, Bryant, L, Byrum, K, Carlstrom, JE, Carter, FW, Cecil, TW, Chang, CL, Chaubal, P, Chen, G, Cho, H-M, Chou, T-L, Cliche, J-F, Crawford, TM, Cukierman, A, Daley, C, de Haan, T, Denison, EV, Dibert, K, Ding, J, Dobbs, MA, Everett, W, Feng, C, Ferguson, KR, Fu, J, Galli, S, Gambrel, AE, Gardner, RW, Gualtieri, R, Guns, S, Gupta, N, Guyser, R, Halverson, NW, Harke-Hosemann, AH, Harrington, NL, Henning, JW, Hilton, GC, Hivon, E, Holder, GP, Holzapfel, WL, Hood, JC, Howe, D, Huang, N, Irwin, KD, Jeong, OB, Jonas, M, Jones, A, Khaire, TS, Knox, L, Kofman, AM, Korman, M, Kubik, DL, Kuhlmann, S, Kuo, C-L, Lee, AT, Leitch, EM, Lowitz, AE, Lu, C, Meyer, SS, Michalik, D, Millea, M, Natoli, T, Nguyen, H, Noble, GI, Novosad, V, Omori, Y, Padin, S, Pan, Z, Paschos, P, Pearson, J, Posada, CM, Prabhu, K, Quan, W, Reichardt, CL, Riebel, D, Riedel, B, Rouble, M, and Ruhl, JE

Subjects
Astronomical Sciences, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural), Astronomy & Astrophysics, Astronomical sciences
Abstract

SPT-3G is the third survey receiver operating on the South Pole Telescope dedicated to high-resolution observations of the cosmic microwave background (CMB). Sensitive measurements of the temperature and polarization anisotropies of the CMB provide a powerful data set for constraining cosmology. Additionally, CMB surveys with arcminute-scale resolution are capable of detecting galaxy clusters, millimeter-wave bright galaxies, and a variety of transient phenomena. The SPT-3G instrument provides a significant improvement in mapping speed over its predecessors, SPT-SZ and SPTpol. The broadband optics design of the instrument achieves a 430 mm diameter image plane across observing bands of 95, 150, and 220 GHz, with 1.2′ FWHM beam response at 150 GHz. In the receiver, this image plane is populated with 2690 dual-polarization, trichroic pixels ( 1/416,000 detectors) read out using a 68× digital frequency-domain multiplexing readout system. In 2018, SPT-3G began a multiyear survey of 1500 deg2 of the southern sky. We summarize the unique optical, cryogenic, detector, and readout technologies employed in SPT-3G, and we report on the integrated performance of the instrument.

Published
2022

3. Constraints on ΛCDM extensions from the SPT-3G 2018 EE and TE power spectra

Author

Balkenhol, L, Dutcher, D, Ade, PAR, Ahmed, Z, Anderes, E, Anderson, AJ, Archipley, M, Avva, JS, Aylor, K, Barry, PS, Thakur, R Basu, Benabed, K, Bender, AN, Benson, BA, Bianchini, F, Bleem, LE, Bouchet, FR, Bryant, L, Byrum, K, Carlstrom, JE, Carter, FW, Cecil, TW, Chang, CL, Chaubal, P, Chen, G, Cho, H-M, Chou, T-L, Cliche, J-F, Crawford, TM, Cukierman, A, Daley, C, de Haan, T, Denison, EV, Dibert, K, Ding, J, Dobbs, MA, Everett, W, Feng, C, Ferguson, KR, Foster, A, Fu, J, Galli, S, Gambrel, AE, Gardner, RW, Goeckner-Wald, N, Gualtieri, R, Guns, S, Gupta, N, Guyser, R, Halverson, NW, Harke-Hosemann, AH, Harrington, NL, Henning, JW, Hilton, GC, Hivon, E, Holder, GP, Holzapfel, WL, Hood, JC, Howe, D, Huang, N, Irwin, KD, Jeong, OB, Jonas, M, Jones, A, Khaire, TS, Knox, L, Kofman, AM, Korman, M, Kubik, DL, Kuhlmann, S, Kuo, C-L, Lee, AT, Leitch, EM, Lowitz, AE, Lu, C, Meyer, SS, Michalik, D, Millea, M, Montgomery, J, Nadolski, A, Natoli, T, Nguyen, H, Noble, GI, Novosad, V, Omori, Y, Padin, S, Pan, Z, Paschos, P, Pearson, J, Posada, CM, Prabhu, K, Quan, W, Rahlin, A, Reichardt, CL, Riebel, D, Riedel, B, Rouble, M, Ruhl, JE, Sayre, JT, and Schiappucci, E

Subjects
Particle and High Energy Physics, Physical Sciences
Abstract

We present constraints on extensions to the ΛCDM cosmological model from measurements of the E-mode polarization autopower spectrum and the temperature-E-mode cross-power spectrum of the cosmic microwave background (CMB) made using 2018 SPT-3G data. The extensions considered vary the primordial helium abundance, the effective number of relativistic degrees of freedom, the sum of neutrino masses, the relativistic energy density and mass of a sterile neutrino, and the mean spatial curvature. We do not find clear evidence for any of these extensions, from either the SPT-3G 2018 dataset alone or in combination with baryon acoustic oscillation and Planck data. None of these model extensions significantly relax the tension between Hubble-constant, H0, constraints from the CMB and from distance-ladder measurements using Cepheids and supernovae. The addition of the SPT-3G 2018 data to Planck reduces the square-root of the determinants of the parameter covariance matrices by factors of 1.3-2.0 across these models, signaling a substantial reduction in the allowed parameter volume. We also explore CMB-based constraints on H0 from combined SPT, Planck, and ACT DR4 datasets. While individual experiments see some indications of different H0 values between the TT, TE, and EE spectra, the combined H0 constraints are consistent between the three spectra. For the full combined datasets, we report H0=67.49±0.53 km s-1 Mpc-1, which is the tightest constraint on H0 from CMB power spectra to date and in 4.1σ tension with the most precise distance-ladder-based measurement of H0. The SPT-3G survey is planned to continue through at least 2023, with existing maps of combined 2019 and 2020 data already having ∼3.5×lower noise than the maps used in this analysis.

Published
2021

4. Measurement of gravitational lensing of the cosmic microwave background using SPT-3G 2018 data

Author

Pan, Z, Bianchini, F, Wu, WLK, Ade, PAR, Ahmed, Z, Anderes, E, Anderson, AJ, Ansarinejad, B, Archipley, M, Aylor, K, Balkenhol, L, Barry, PS, Thakur, RB, Benabed, K, Bender, AN, Benson, BA, Bleem, LE, Bouchet, FR, Bryant, L, Byrum, K, Camphuis, E, Carlstrom, JE, Carter, FW, Cecil, TW, Chang, CL, Chaubal, P, Chen, G, Chichura, PM, Cho, H-M, Chou, T-L, Cliche, J-F, Coerver, A, Crawford, TM, Cukierman, A, Daley, C, de Haan, T, Denison, EV, Dibert, KR, Ding, J, Dobbs, MA, Doussot, A, Dutcher, D, Everett, W, Feng, C, Ferguson, KR, Fichman, K, Foster, A, Fu, J, Galli, S, Gambrel, AE, Gardner, RW, Ge, F, Goeckner-Wald, N, Gualtieri, R, Guidi, F, Guns, S, Gupta, N, Halverson, NW, Harke-Hosemann, AH, Harrington, NL, Henning, JW, Hilton, GC, Hivon, E, Holder, GP, Holzapfel, WL, Hood, JC, Howe, D, Huang, N, Irwin, KD, Jeong, O, Jonas, M, Jones, A, Keruzore, F, Khaire, TS, Knox, L, Kofman, AM, Korman, M, Kubik, DL, Kuhlmann, S, Kuo, C-L, Lee, AT, Leitch, EM, Levy, K, Lowitz, AE, Lu, C, Maniyar, A, Menanteau, F, Meyer, SS, Michalik, D, Millea, M, Montgomery, J, Nadolski, A, Nakato, Y, Natoli, T, Nguyen, H, Noble, GI, Novosad, V, Omori, Y, Padin, S, Paschos, P, Pearson, J, Posada, CM, Prabhu, K, Quan, W, Raghunathan, S, Rahimi, M, Rahlin, A, Reichardt, CL, Riebel, D, Riedel, B, Ruhl, JE, Sayre, JT, Schiappucci, E, Shirokoff, E, Smecher, G, Sobrin, JA, Stark, AA, Stephen, J, Story, KT, Suzuki, A, Takakura, S, Tandoi, C, Thompson, KL, Thorne, B, Trendafilova, C, Tucker, C, Umilta, C, Vale, LR, Vanderlinde, K, Vieira, JD, Wang, G, Whitehorn, N, Yefremenko, V, Yoon, KW, Young, MR, Zebrowski, JA, Pan, Z, Bianchini, F, Wu, WLK, Ade, PAR, Ahmed, Z, Anderes, E, Anderson, AJ, Ansarinejad, B, Archipley, M, Aylor, K, Balkenhol, L, Barry, PS, Thakur, RB, Benabed, K, Bender, AN, Benson, BA, Bleem, LE, Bouchet, FR, Bryant, L, Byrum, K, Camphuis, E, Carlstrom, JE, Carter, FW, Cecil, TW, Chang, CL, Chaubal, P, Chen, G, Chichura, PM, Cho, H-M, Chou, T-L, Cliche, J-F, Coerver, A, Crawford, TM, Cukierman, A, Daley, C, de Haan, T, Denison, EV, Dibert, KR, Ding, J, Dobbs, MA, Doussot, A, Dutcher, D, Everett, W, Feng, C, Ferguson, KR, Fichman, K, Foster, A, Fu, J, Galli, S, Gambrel, AE, Gardner, RW, Ge, F, Goeckner-Wald, N, Gualtieri, R, Guidi, F, Guns, S, Gupta, N, Halverson, NW, Harke-Hosemann, AH, Harrington, NL, Henning, JW, Hilton, GC, Hivon, E, Holder, GP, Holzapfel, WL, Hood, JC, Howe, D, Huang, N, Irwin, KD, Jeong, O, Jonas, M, Jones, A, Keruzore, F, Khaire, TS, Knox, L, Kofman, AM, Korman, M, Kubik, DL, Kuhlmann, S, Kuo, C-L, Lee, AT, Leitch, EM, Levy, K, Lowitz, AE, Lu, C, Maniyar, A, Menanteau, F, Meyer, SS, Michalik, D, Millea, M, Montgomery, J, Nadolski, A, Nakato, Y, Natoli, T, Nguyen, H, Noble, GI, Novosad, V, Omori, Y, Padin, S, Paschos, P, Pearson, J, Posada, CM, Prabhu, K, Quan, W, Raghunathan, S, Rahimi, M, Rahlin, A, Reichardt, CL, Riebel, D, Riedel, B, Ruhl, JE, Sayre, JT, Schiappucci, E, Shirokoff, E, Smecher, G, Sobrin, JA, Stark, AA, Stephen, J, Story, KT, Suzuki, A, Takakura, S, Tandoi, C, Thompson, KL, Thorne, B, Trendafilova, C, Tucker, C, Umilta, C, Vale, LR, Vanderlinde, K, Vieira, JD, Wang, G, Whitehorn, N, Yefremenko, V, Yoon, KW, Young, MR, and Zebrowski, JA

Published
2023

5. Measurement of the mean central optical depth of galaxy clusters via the pairwise kinematic Sunyaev-Zel'dovich effect with SPT-3G and DES

Author

Schiappucci, E, Bianchini, F, Aguena, M, Archipley, M, Balkenhol, L, Bleem, LE, Chaubal, P, Crawford, TM, Grandis, S, Omori, Y, Reichardt, CL, Rozo, E, Rykoff, ES, To, C, Abbott, TMC, Ade, PAR, Alves, O, Anderson, AJ, Andrade-Oliveira, F, Annis, J, Avva, JS, Bacon, D, Benabed, K, Bender, AN, Benson, BA, Bernstein, GM, Bertin, E, Bocquet, S, Bouchet, FR, Brooks, D, Burke, DL, Carlstrom, JE, Rosell, AC, Kind, MC, Carretero, J, Cecil, TW, Chang, CL, Chichura, PM, Chou, T-L, Costanzi, M, Cukierman, A, da Costa, LN, Daley, C, de Haan, T, Desai, S, Dibert, KR, Diehl, HT, Dobbs, MA, Doel, P, Doux, C, Dutcher, D, Everett, S, Everett, W, Feng, C, Ferguson, KR, Ferrero, I, Ferte, A, Flaugher, B, Foster, A, Frieman, J, Galli, S, Gambrel, AE, Garcia-Bellido, J, Gardner, RW, Gatti, M, Giannantonio, T, Goeckner-Wald, N, Gruen, D, Gualtieri, R, Guns, S, Gutierrez, G, Halverson, NW, Hinton, SR, Hivon, E, Holder, GP, Hollowood, DL, Holzapfel, WL, Honscheid, K, Hood, JC, Huang, N, James, DJ, Knox, L, Korman, M, Kuehn, K, Kuo, C-L, Lahav, O, Lee, AT, Lidman, C, Lima, M, Lowitz, AE, Lu, C, March, M, Mena-Fernandez, J, Menanteau, F, Millea, M, Miquel, R, Mohr, JJ, Montgomery, J, Muir, J, Natoli, T, Noble, GI, Novosad, V, Ogando, RLC, Padin, S, Pan, Z, Paz-Chinchon, F, Pereira, MES, Pieres, A, Malagon, AAP, Prabhu, K, Prat, J, Quan, W, Rahlin, A, Raveri, M, Rodriguez-Monroy, M, Romer, AK, Rouble, M, Ruhl, JE, Sanchez, E, Scarpine, V, Schubnell, M, Smecher, G, Smith, M, Soares-Santos, M, Sobrin, JA, Suchyta, E, Suzuki, A, Tarle, G, Thomas, D, Thompson, KL, Thorne, B, Tucker, C, Umilta, C, Vieira, JD, Vincenzi, M, Wang, G, Weaverdyck, N, Weller, J, Whitehorn, N, Wu, WLK, Yefremenko, V, Young, MR, Schiappucci, E, Bianchini, F, Aguena, M, Archipley, M, Balkenhol, L, Bleem, LE, Chaubal, P, Crawford, TM, Grandis, S, Omori, Y, Reichardt, CL, Rozo, E, Rykoff, ES, To, C, Abbott, TMC, Ade, PAR, Alves, O, Anderson, AJ, Andrade-Oliveira, F, Annis, J, Avva, JS, Bacon, D, Benabed, K, Bender, AN, Benson, BA, Bernstein, GM, Bertin, E, Bocquet, S, Bouchet, FR, Brooks, D, Burke, DL, Carlstrom, JE, Rosell, AC, Kind, MC, Carretero, J, Cecil, TW, Chang, CL, Chichura, PM, Chou, T-L, Costanzi, M, Cukierman, A, da Costa, LN, Daley, C, de Haan, T, Desai, S, Dibert, KR, Diehl, HT, Dobbs, MA, Doel, P, Doux, C, Dutcher, D, Everett, S, Everett, W, Feng, C, Ferguson, KR, Ferrero, I, Ferte, A, Flaugher, B, Foster, A, Frieman, J, Galli, S, Gambrel, AE, Garcia-Bellido, J, Gardner, RW, Gatti, M, Giannantonio, T, Goeckner-Wald, N, Gruen, D, Gualtieri, R, Guns, S, Gutierrez, G, Halverson, NW, Hinton, SR, Hivon, E, Holder, GP, Hollowood, DL, Holzapfel, WL, Honscheid, K, Hood, JC, Huang, N, James, DJ, Knox, L, Korman, M, Kuehn, K, Kuo, C-L, Lahav, O, Lee, AT, Lidman, C, Lima, M, Lowitz, AE, Lu, C, March, M, Mena-Fernandez, J, Menanteau, F, Millea, M, Miquel, R, Mohr, JJ, Montgomery, J, Muir, J, Natoli, T, Noble, GI, Novosad, V, Ogando, RLC, Padin, S, Pan, Z, Paz-Chinchon, F, Pereira, MES, Pieres, A, Malagon, AAP, Prabhu, K, Prat, J, Quan, W, Rahlin, A, Raveri, M, Rodriguez-Monroy, M, Romer, AK, Rouble, M, Ruhl, JE, Sanchez, E, Scarpine, V, Schubnell, M, Smecher, G, Smith, M, Soares-Santos, M, Sobrin, JA, Suchyta, E, Suzuki, A, Tarle, G, Thomas, D, Thompson, KL, Thorne, B, Tucker, C, Umilta, C, Vieira, JD, Vincenzi, M, Wang, G, Weaverdyck, N, Weller, J, Whitehorn, N, Wu, WLK, Yefremenko, V, and Young, MR

Published
2023

6. Performance and characterization of the SPT-3G digital frequency-domain multiplexed readout system using an improved noise and crosstalk model

Author

Montgomery, J, Ade, PAR, Ahmed, Z, Anderes, E, Anderson, AJ, Archipley, MA, Avva, JS, Aylor, K, Balkenhol, L, Barry, PS, Thakur, RB, Benabed, K, Bender, AN, Benson, BA, Bianchini, F, Bleem, LE, Bouchet, FR, Bryant, L, Byrum, K, Carlstrom, JE, Carter, FW, Cecil, TW, Chang, CL, Chaubal, P, Chen, G, Cho, H-M, Chou, T-L, Cliche, J-F, Crawford, TM, Cukierman, AJ, Daley, CM, de Haan, T, Denison, E, Dibert, K, Ding, J, Dobbs, MA, Dutcher, D, Elleflot, T, Everett, WB, Feng, C, Ferguson, KR, Foster, A, Fu, J, Galli, S, Gambrel, AE, Gardner, RW, Goeckner-Wald, N, Groh, JC, Gualtieri, R, Guns, ST, Gupta, N, Guyser, RJ, Halverson, NW, Harke-Hosemann, AH, Harrington, NL, Henning, JW, Hilton, GC, Hivon, EF, Holzapfel, WL, Hood, JC, Howe, D, Huang, N, Irwin, KD, Jeong, OB, Jonas, M, Jones, A, Khaire, TS, Knox, L, Kofman, AM, Korman, M, Kubik, DL, Kuhlmann, SE, Kuo, C-L, Lee, AT, Leitch, EM, Lowitz, AE, Lu, C, Meyer, SS, Michalik, D, Millea, M, Nadolski, A, Natoli, TJ, Nguyen, H, Noble, G, Novosad, V, Omori, Y, Padin, S, Pan, Z, Paschos, P, Pearson, JE, Posada, CM, Prabhu, K, Quan, W, Rahlin, AS, Reichardt, CL, Riebel, D, Riedel, B, Rouble, M, Ruhl, JE, Sayre, JT, Schiappucci, E, Shirokoff, E, Smecher, GM, Sobrin, JA, Stark, AA, Stephen, J, Story, KT, Suzuki, A, Thompson, KL, Thorne, B, Tucker, CE, Umilta, C, Vale, LR, Vanderlinde, K, Vieira, JD, Wang, G, Whitehorn, N, Wu, WLK, Yefremenko, VG, Yoon, KW, Young, MR, Montgomery, J, Ade, PAR, Ahmed, Z, Anderes, E, Anderson, AJ, Archipley, MA, Avva, JS, Aylor, K, Balkenhol, L, Barry, PS, Thakur, RB, Benabed, K, Bender, AN, Benson, BA, Bianchini, F, Bleem, LE, Bouchet, FR, Bryant, L, Byrum, K, Carlstrom, JE, Carter, FW, Cecil, TW, Chang, CL, Chaubal, P, Chen, G, Cho, H-M, Chou, T-L, Cliche, J-F, Crawford, TM, Cukierman, AJ, Daley, CM, de Haan, T, Denison, E, Dibert, K, Ding, J, Dobbs, MA, Dutcher, D, Elleflot, T, Everett, WB, Feng, C, Ferguson, KR, Foster, A, Fu, J, Galli, S, Gambrel, AE, Gardner, RW, Goeckner-Wald, N, Groh, JC, Gualtieri, R, Guns, ST, Gupta, N, Guyser, RJ, Halverson, NW, Harke-Hosemann, AH, Harrington, NL, Henning, JW, Hilton, GC, Hivon, EF, Holzapfel, WL, Hood, JC, Howe, D, Huang, N, Irwin, KD, Jeong, OB, Jonas, M, Jones, A, Khaire, TS, Knox, L, Kofman, AM, Korman, M, Kubik, DL, Kuhlmann, SE, Kuo, C-L, Lee, AT, Leitch, EM, Lowitz, AE, Lu, C, Meyer, SS, Michalik, D, Millea, M, Nadolski, A, Natoli, TJ, Nguyen, H, Noble, G, Novosad, V, Omori, Y, Padin, S, Pan, Z, Paschos, P, Pearson, JE, Posada, CM, Prabhu, K, Quan, W, Rahlin, AS, Reichardt, CL, Riebel, D, Riedel, B, Rouble, M, Ruhl, JE, Sayre, JT, Schiappucci, E, Shirokoff, E, Smecher, GM, Sobrin, JA, Stark, AA, Stephen, J, Story, KT, Suzuki, A, Thompson, KL, Thorne, B, Tucker, CE, Umilta, C, Vale, LR, Vanderlinde, K, Vieira, JD, Wang, G, Whitehorn, N, Wu, WLK, Yefremenko, VG, Yoon, KW, and Young, MR

Abstract

The third-generation South Pole Telescope camera (SPT-3G) improves upon its predecessor (SPTpol) by an order of magnitude increase in detectors on the focal plane. The technology used to read out and control these detectors, digital frequency-domain multiplexing (DfMUX), is conceptually the same as used for SPTpol, but extended to accommodate more detectors. A nearly 5× expansion in the readout operating bandwidth has enabled the use of this large focal plane, and SPT-3G performance meets the forecasting targets relevant to its science objectives. However, the electrical dynamics of the higher-bandwidth readout differ from predictions based on models of the SPTpol system due to the higher frequencies used and parasitic impedances associated with new cryogenic electronic architecture. To address this, we present an updated derivation for electrical crosstalk in higher-bandwidth DfMUX systems and identify two previously uncharacterized contributions to readout noise, which become dominant at high bias frequency. The updated crosstalk and noise models successfully describe the measured crosstalk and readout noise performance of SPT-3G. These results also suggest specific changes to warm electronics component values, wire-harness properties, and SQUID parameters, to improve the readout system for future experiments using DfMUX, such as the LiteBIRD space telescope.

Published
2022

7. SPT-3G+: Mapping the High-Frequency Cosmic Microwave Background Using Kinetic Inductance Detectors

Author

Zmuidzinas, J, Gao, JR, Anderson, AJ, Barry, P, Bender, AN, Benson, BA, Bleem, LE, Carlstrom, JE, Cecil, TW, Chang, CL, Crawford, TM, Dibert, KR, Dobbs, MA, Fichman, K, Halverson, NW, Holzapfel, WL, Hryciuk, A, Karkare, KS, Li, J, Lisovenko, M, Marrone, D, McMahon, J, Montgomery, J, Natoli, T, Pan, Z, Raghunathan, S, Reichardt, CL, Rouble, M, Shirokoff, E, Smecher, G, Stark, AA, Vieira, JD, Young, MR, Zmuidzinas, J, Gao, JR, Anderson, AJ, Barry, P, Bender, AN, Benson, BA, Bleem, LE, Carlstrom, JE, Cecil, TW, Chang, CL, Crawford, TM, Dibert, KR, Dobbs, MA, Fichman, K, Halverson, NW, Holzapfel, WL, Hryciuk, A, Karkare, KS, Li, J, Lisovenko, M, Marrone, D, McMahon, J, Montgomery, J, Natoli, T, Pan, Z, Raghunathan, S, Reichardt, CL, Rouble, M, Shirokoff, E, Smecher, G, Stark, AA, Vieira, JD, and Young, MR

Abstract

We present the design and science goals of SPT-3G+, a new camera for the South Pole Telescope, which will consist of a dense array of 34100 kinetic inductance detectors measuring the cosmic microwave background (CMB) at 220, 285 and 345 GHz. The SPT-3G+ dataset will enable new constraints on the process of reionization, including measurements of the patchy kinematic Sunyaev-Zeldovich effect and improved constraints on the optical depth due to reionization. At the same time, it will serve as a pathfinder for the detection of Rayleigh scattering, which could allow future CMB surveys to constrain cosmological parameters better than from the primary CMB alone. In addition, the combined, multi-band SPT-3G and SPT-3G+ survey data, will have several synergies that enhance the original SPT-3G survey, including: extending the redshift-reach of SZ cluster surveys to z > 2; understanding the relationship between magnetic fields and star formation in our Galaxy; improved characterization of the impact of dust on inflationary B-mode searches; and characterizing astrophysical transients at the boundary between mm and sub-mm wavelengths. Finally, the modular design of the SPT-3G+ camera allows it to serve as an on-sky demonstrator for new detector technologies employing microwave readout, such as the on-chip spectrometers that we expect to deploy during the SPT-3G+ survey. In this paper, we describe the science goals of the project and the key technology developments that enable its powerful yet compact design.

Published
2022

8. Measurements of the E-mode polarization and temperature-E-mode correlation of the CMB from SPT-3G 2018 data

Author

Dutcher, D, Balkenhol, L, Ade, PAR, Ahmed, Z, Anderes, E, Anderson, AJ, Archipley, M, Avva, JS, Aylor, K, Barry, PS, Thakur, RB, Benabed, K, Bender, AN, Benson, BA, Bianchini, F, Bleem, LE, Bouchet, FR, Bryant, L, Byrum, K, Carlstrom, JE, Carter, FW, Cecil, TW, Chang, CL, Chaubal, P, Chen, G, Cho, H-M, Chou, T-L, Cliche, J-F, Crawford, TM, Cukierman, A, Daley, C, de Haan, T, Denison, E, Dibert, K, Ding, J, Dobbs, MA, Everett, W, Feng, C, Ferguson, KR, Foster, A, Fu, J, Galli, S, Gambrel, AE, Gardner, RW, Goeckner-Wald, N, Gualtieri, R, Guns, S, Gupta, N, Guyser, R, Halverson, NW, Harke-Hosemann, AH, Harrington, NL, Henning, JW, Hilton, GC, Hivon, E, Holder, GP, Holzapfel, WL, Hood, JC, Howe, D, Huang, N, Irwin, KD, Jeong, OB, Jonas, M, Jones, A, Khaire, TS, Knox, L, Kofman, AM, Korman, M, Kubik, DL, Kuhlmann, S, Kuo, C-L, Lee, AT, Leitch, EM, Lowitz, AE, Lu, C, Meyer, SS, Michalik, D, Millea, M, Montgomery, J, Nadolski, A, Natoli, T, Nguyen, H, Noble, G, Novosad, V, Omori, Y, Padin, S, Pan, Z, Paschos, P, Pearson, J, Posada, CM, Prabhu, K, Quan, W, Raghunathan, S, Rahlin, A, Reichardt, CL, Riebel, D, Riedel, B, Rouble, M, Ruhl, JE, Sayre, JT, Schiappucci, E, Shirokoff, E, Smecher, G, Sobrin, JA, Stark, AA, Stephen, J, Story, KT, Suzuki, A, Thompson, KL, Thorne, B, Tucker, C, Umilta, C, Vale, LR, Vanderlinde, K, Vieira, JD, Wang, G, Whitehorn, N, Wu, WLK, Yefremenko, V, Yoon, KW, Young, MR, Dutcher, D, Balkenhol, L, Ade, PAR, Ahmed, Z, Anderes, E, Anderson, AJ, Archipley, M, Avva, JS, Aylor, K, Barry, PS, Thakur, RB, Benabed, K, Bender, AN, Benson, BA, Bianchini, F, Bleem, LE, Bouchet, FR, Bryant, L, Byrum, K, Carlstrom, JE, Carter, FW, Cecil, TW, Chang, CL, Chaubal, P, Chen, G, Cho, H-M, Chou, T-L, Cliche, J-F, Crawford, TM, Cukierman, A, Daley, C, de Haan, T, Denison, E, Dibert, K, Ding, J, Dobbs, MA, Everett, W, Feng, C, Ferguson, KR, Foster, A, Fu, J, Galli, S, Gambrel, AE, Gardner, RW, Goeckner-Wald, N, Gualtieri, R, Guns, S, Gupta, N, Guyser, R, Halverson, NW, Harke-Hosemann, AH, Harrington, NL, Henning, JW, Hilton, GC, Hivon, E, Holder, GP, Holzapfel, WL, Hood, JC, Howe, D, Huang, N, Irwin, KD, Jeong, OB, Jonas, M, Jones, A, Khaire, TS, Knox, L, Kofman, AM, Korman, M, Kubik, DL, Kuhlmann, S, Kuo, C-L, Lee, AT, Leitch, EM, Lowitz, AE, Lu, C, Meyer, SS, Michalik, D, Millea, M, Montgomery, J, Nadolski, A, Natoli, T, Nguyen, H, Noble, G, Novosad, V, Omori, Y, Padin, S, Pan, Z, Paschos, P, Pearson, J, Posada, CM, Prabhu, K, Quan, W, Raghunathan, S, Rahlin, A, Reichardt, CL, Riebel, D, Riedel, B, Rouble, M, Ruhl, JE, Sayre, JT, Schiappucci, E, Shirokoff, E, Smecher, G, Sobrin, JA, Stark, AA, Stephen, J, Story, KT, Suzuki, A, Thompson, KL, Thorne, B, Tucker, C, Umilta, C, Vale, LR, Vanderlinde, K, Vieira, JD, Wang, G, Whitehorn, N, Wu, WLK, Yefremenko, V, Yoon, KW, and Young, MR

Published
2021

9. Constraints on Lambda CDM extensions from the SPT-3G 2018 EE and TE power spectra

Author

Balkenhol, L, Dutcher, D, Ade, PAR, Ahmed, Z, Anderes, E, Anderson, AJ, Archipley, M, Avva, JS, Aylor, K, Barry, PS, Thakur, RB, Benabed, K, Bender, AN, Benson, BA, Bianchini, F, Bleem, LE, Bouchet, FR, Bryant, L, Byrum, K, Carlstrom, JE, Carter, FW, Cecil, TW, Chang, CL, Chaubal, P, Chen, G, Cho, H-M, Chou, T-L, Cliche, J-F, Crawford, TM, Cukierman, A, Daley, C, de Haan, T, Denison, E, Dibert, K, Ding, J, Dobbs, MA, Everett, W, Feng, C, Ferguson, KR, Foster, A, Fu, J, Galli, S, Gambrel, AE, Gardner, RW, Goeckner-Wald, N, Gualtieri, R, Guns, S, Gupta, N, Guyser, R, Halverson, NW, Harke-Hosemann, AH, Harrington, NL, Henning, JW, Hilton, GC, Hivon, E, Holder, GP, Holzapfel, WL, Hood, JC, Howe, D, Huang, N, Irwin, KD, Jeong, OB, Jonas, M, Jones, A, Khaire, TS, Knox, L, Kofman, AM, Korman, M, Kubik, DL, Kuhlmann, S, Kuo, C-L, Lee, AT, Leitch, EM, Lowitz, AE, Lu, C, Meyer, SS, Michalik, D, Millea, M, Montgomery, J, Nadolski, A, Natoli, T, Nguyen, H, Noble, G, Novosad, V, Omori, Y, Padin, S, Pan, Z, Paschos, P, Pearson, J, Posada, CM, Prabhu, K, Quan, W, Rahlin, A, Reichardt, CL, Riebel, D, Riedel, B, Rouble, M, Ruhl, JE, Sayre, JT, Schiappucci, E, Shirokoff, E, Smecher, G, Sobrin, JA, Stark, AA, Stephen, J, Story, KT, Suzuki, A, Thompson, KL, Thorne, B, Tucker, C, Umilta, C, Vale, LR, Vanderlinde, K, Vieira, JD, Wang, G, Whitehorn, N, Wu, WLK, Yefremenko, V, Yoon, KW, Young, MR, Balkenhol, L, Dutcher, D, Ade, PAR, Ahmed, Z, Anderes, E, Anderson, AJ, Archipley, M, Avva, JS, Aylor, K, Barry, PS, Thakur, RB, Benabed, K, Bender, AN, Benson, BA, Bianchini, F, Bleem, LE, Bouchet, FR, Bryant, L, Byrum, K, Carlstrom, JE, Carter, FW, Cecil, TW, Chang, CL, Chaubal, P, Chen, G, Cho, H-M, Chou, T-L, Cliche, J-F, Crawford, TM, Cukierman, A, Daley, C, de Haan, T, Denison, E, Dibert, K, Ding, J, Dobbs, MA, Everett, W, Feng, C, Ferguson, KR, Foster, A, Fu, J, Galli, S, Gambrel, AE, Gardner, RW, Goeckner-Wald, N, Gualtieri, R, Guns, S, Gupta, N, Guyser, R, Halverson, NW, Harke-Hosemann, AH, Harrington, NL, Henning, JW, Hilton, GC, Hivon, E, Holder, GP, Holzapfel, WL, Hood, JC, Howe, D, Huang, N, Irwin, KD, Jeong, OB, Jonas, M, Jones, A, Khaire, TS, Knox, L, Kofman, AM, Korman, M, Kubik, DL, Kuhlmann, S, Kuo, C-L, Lee, AT, Leitch, EM, Lowitz, AE, Lu, C, Meyer, SS, Michalik, D, Millea, M, Montgomery, J, Nadolski, A, Natoli, T, Nguyen, H, Noble, G, Novosad, V, Omori, Y, Padin, S, Pan, Z, Paschos, P, Pearson, J, Posada, CM, Prabhu, K, Quan, W, Rahlin, A, Reichardt, CL, Riebel, D, Riedel, B, Rouble, M, Ruhl, JE, Sayre, JT, Schiappucci, E, Shirokoff, E, Smecher, G, Sobrin, JA, Stark, AA, Stephen, J, Story, KT, Suzuki, A, Thompson, KL, Thorne, B, Tucker, C, Umilta, C, Vale, LR, Vanderlinde, K, Vieira, JD, Wang, G, Whitehorn, N, Wu, WLK, Yefremenko, V, Yoon, KW, and Young, MR

Published
2021

10. Detection of Galactic and Extragalactic Millimeter-wavelength Transient Sources with SPT-3G

Author

Guns, S, Foster, A, Daley, C, Rahlin, A, Whitehorn, N, Ade, PAR, Ahmed, Z, Anderes, E, Anderson, AJ, Archipley, M, Avva, JS, Aylor, K, Balkenhol, L, Barry, PS, Basu Thakur, R, Benabed, K, Bender, AN, Benson, BA, Bianchini, F, Bleem, LE, Bouchet, FR, Bryant, L, Byrum, K, Carlstrom, JE, Carter, FW, Cecil, TW, Chang, CL, Chaubal, P, Chen, G, Cho, H-M, Chou, T-L, Cliche, J-F, Crawford, TM, Cukierman, A, de Haan, T, Denison, EV, Dibert, K, Ding, J, Dobbs, MA, Dutcher, D, Everett, W, Feng, C, Ferguson, KR, Fu, J, Galli, S, Gambrel, AE, Gardner, RW, Goeckner-Wald, N, Gualtieri, R, Gupta, N, Guyser, R, Halverson, NW, Harke-Hosemann, AH, Harrington, NL, Henning, JW, Hilton, GC, Hivon, E, Holder, GP, Holzapfel, WL, Hood, JC, Howe, D, Huang, N, Irwin, KD, Jeong, OB, Jonas, M, Jones, A, Khaire, TS, Knox, L, Kofman, AM, Korman, M, Kubik, DL, Kuhlmann, S, Kuo, C-L, Lee, AT, Leitch, EM, Lowitz, AE, Lu, C, Marrone, DP, Meyer, SS, Michalik, D, Millea, M, Montgomery, J, Nadolski, A, Natoli, T, Nguyen, H, Noble, GI, Novosad, V, Omori, Y, Padin, S, Pan, Z, Paschos, P, Pearson, J, Phadke, KA, Posada, CM, Prabhu, K, Quan, W, Reichardt, CL, Riebel, D, Riedel, B, Rouble, M, Ruhl, JE, Sayre, JT, Schiappucci, E, Shirokoff, E, Smecher, G, Sobrin, JA, Stark, AA, Stephen, J, Story, KT, Suzuki, A, Thompson, KL, Thorne, B, Tucker, C, Umilta, C, Vale, LR, Vieira, JD, Wang, G, Wu, WLK, Yefremenko, V, Yoon, KW, Young, MR, Zhang, L, Guns, S, Foster, A, Daley, C, Rahlin, A, Whitehorn, N, Ade, PAR, Ahmed, Z, Anderes, E, Anderson, AJ, Archipley, M, Avva, JS, Aylor, K, Balkenhol, L, Barry, PS, Basu Thakur, R, Benabed, K, Bender, AN, Benson, BA, Bianchini, F, Bleem, LE, Bouchet, FR, Bryant, L, Byrum, K, Carlstrom, JE, Carter, FW, Cecil, TW, Chang, CL, Chaubal, P, Chen, G, Cho, H-M, Chou, T-L, Cliche, J-F, Crawford, TM, Cukierman, A, de Haan, T, Denison, EV, Dibert, K, Ding, J, Dobbs, MA, Dutcher, D, Everett, W, Feng, C, Ferguson, KR, Fu, J, Galli, S, Gambrel, AE, Gardner, RW, Goeckner-Wald, N, Gualtieri, R, Gupta, N, Guyser, R, Halverson, NW, Harke-Hosemann, AH, Harrington, NL, Henning, JW, Hilton, GC, Hivon, E, Holder, GP, Holzapfel, WL, Hood, JC, Howe, D, Huang, N, Irwin, KD, Jeong, OB, Jonas, M, Jones, A, Khaire, TS, Knox, L, Kofman, AM, Korman, M, Kubik, DL, Kuhlmann, S, Kuo, C-L, Lee, AT, Leitch, EM, Lowitz, AE, Lu, C, Marrone, DP, Meyer, SS, Michalik, D, Millea, M, Montgomery, J, Nadolski, A, Natoli, T, Nguyen, H, Noble, GI, Novosad, V, Omori, Y, Padin, S, Pan, Z, Paschos, P, Pearson, J, Phadke, KA, Posada, CM, Prabhu, K, Quan, W, Reichardt, CL, Riebel, D, Riedel, B, Rouble, M, Ruhl, JE, Sayre, JT, Schiappucci, E, Shirokoff, E, Smecher, G, Sobrin, JA, Stark, AA, Stephen, J, Story, KT, Suzuki, A, Thompson, KL, Thorne, B, Tucker, C, Umilta, C, Vale, LR, Vieira, JD, Wang, G, Wu, WLK, Yefremenko, V, Yoon, KW, Young, MR, and Zhang, L

Abstract

High angular resolution cosmic microwave background experiments provide a unique opportunity to conduct a survey of time-variable sources at millimeter wavelengths, a population that has primarily been understood through follow-up measurements of detections in other bands. Here we report the first results of an astronomical transient survey with the South Pole Telescope (SPT) using the SPT-3G camera to observe 1500 deg2 of the southern sky. The observations took place from 2020 March to November in three bands centered at 95, 150, and 220 GHz. This survey yielded the detection of 15 transient events from sources not previously detected by the SPT. The majority are associated with variable stars of different types, expanding the number of such detected flares by more than a factor of two. The stellar flares are unpolarized and bright, in some cases exceeding 1 Jy, and have durations from a few minutes to several hours. Another population of detected events last for 2–3 weeks and appear to be extragalactic in origin. Though data availability at other wavelengths is limited, we find evidence for concurrent optical activity for two of the stellar flares. Future data from SPT-3G and forthcoming instruments will provide real-time detection of millimeter-wave transients on timescales of minutes to months.

Published
2021

11. Year two instrument status of the SPT-3G cosmic microwave background receiver

Author

Zmuidzinas, J, Gao, JR, Bender, AN, Ade, PAR, Ahmed, Z, Anderson, AJ, Avva, JS, Aylor, K, Barry, PS, Thakur, RB, Benson, BA, Bleem, LS, Bocquet, S, Byrum, K, Carlstrom, JE, Carter, FW, Cecil, TW, Chang, CL, Cho, H-M, Cliche, JF, Crawford, TM, Cukierman, A, de Haan, T, Denison, EV, Ding, J, Dobbs, MA, Dodelson, S, Dutcher, D, Everett, W, Foster, A, Gallicchio, J, Gilbert, A, Groh, JC, Guns, ST, Halverson, NW, Harke-Hosemann, AH, Harrington, NL, Henning, JW, Hilton, GC, Holder, GP, Holzapfel, WL, Huang, N, Irwin, KD, Jeong, OB, Jonas, M, Jones, A, Khaire, TS, Knox, L, Kofman, AM, Korman, M, Kubik, DL, Kuhlmann, S, Kuo, C-L, Lee, AT, Leitch, EM, Lowitz, AE, Meyer, SS, Michalik, D, Montgomery, J, Nadolski, A, Natoli, T, Nguyen, H, Noble, GI, Novosad, V, Padin, S, Pan, Z, Pearson, J, Posada, CM, Quan, W, Raghunathan, S, Rahlin, A, Reichardt, CL, Ruhl, JE, Sayre, JT, Shirokoff, E, Smecher, G, Sobrin, JA, Stark, AA, Story, KT, Suzuki, A, Thompson, KL, Tucker, C, Vale, LR, Vanderlinde, K, Vieira, JD, Wang, G, Whitehorn, N, Wu, WLK, Yefremenko, V, Yoon, KW, Young, MR, Zmuidzinas, J, Gao, JR, Bender, AN, Ade, PAR, Ahmed, Z, Anderson, AJ, Avva, JS, Aylor, K, Barry, PS, Thakur, RB, Benson, BA, Bleem, LS, Bocquet, S, Byrum, K, Carlstrom, JE, Carter, FW, Cecil, TW, Chang, CL, Cho, H-M, Cliche, JF, Crawford, TM, Cukierman, A, de Haan, T, Denison, EV, Ding, J, Dobbs, MA, Dodelson, S, Dutcher, D, Everett, W, Foster, A, Gallicchio, J, Gilbert, A, Groh, JC, Guns, ST, Halverson, NW, Harke-Hosemann, AH, Harrington, NL, Henning, JW, Hilton, GC, Holder, GP, Holzapfel, WL, Huang, N, Irwin, KD, Jeong, OB, Jonas, M, Jones, A, Khaire, TS, Knox, L, Kofman, AM, Korman, M, Kubik, DL, Kuhlmann, S, Kuo, C-L, Lee, AT, Leitch, EM, Lowitz, AE, Meyer, SS, Michalik, D, Montgomery, J, Nadolski, A, Natoli, T, Nguyen, H, Noble, GI, Novosad, V, Padin, S, Pan, Z, Pearson, J, Posada, CM, Quan, W, Raghunathan, S, Rahlin, A, Reichardt, CL, Ruhl, JE, Sayre, JT, Shirokoff, E, Smecher, G, Sobrin, JA, Stark, AA, Story, KT, Suzuki, A, Thompson, KL, Tucker, C, Vale, LR, Vanderlinde, K, Vieira, JD, Wang, G, Whitehorn, N, Wu, WLK, Yefremenko, V, Yoon, KW, and Young, MR

Published
2018

12. First Constraints on the Epoch of Reionization Using the Non-Gaussianity of the Kinematic Sunyaev-Zel'dovich Effect from the South Pole Telescope and Herschel-SPIRE Observations.

Author

Raghunathan S, Ade PAR, Anderson AJ, Ansarinejad B, Archipley M, Austermann JE, Balkenhol L, Beall JA, Benabed K, Bender AN, Benson BA, Bianchini F, Bleem LE, Bock J, Bouchet FR, Bryant L, Camphuis E, Carlstrom JE, Cecil TW, Chang CL, Chaubal P, Chiang HC, Chichura PM, Chou TL, Citron R, Coerver A, Crawford TM, Crites AT, Cukierman A, Daley C, Dibert KR, Dobbs MA, Doussot A, Dutcher D, Everett W, Feng C, Ferguson KR, Fichman K, Foster A, Galli S, Gallicchio J, Gambrel AE, Gardner RW, Ge F, George EM, Goeckner-Wald N, Gualtieri R, Guidi F, Guns S, Gupta N, de Haan T, Halverson NW, Hivon E, Holder GP, Holzapfel WL, Hood JC, Hrubes JD, Hryciuk A, Huang N, Hubmayr J, Irwin KD, Kéruzoré F, Khalife AR, Knox L, Korman M, Kornoelje K, Kuo CL, Lee AT, Levy K, Li D, Lowitz AE, Lu C, Maniyar A, Martsen ES, McMahon JJ, Menanteau F, Millea M, Montgomery J, Corbett Moran C, Nakato Y, Natoli T, Nibarger JP, Noble GI, Novosad V, Omori Y, Padin S, Pan Z, Paschos P, Patil S, Phadke KA, Prabhu K, Pryke C, Quan W, Rahimi M, Rahlin A, Reichardt CL, Rouble M, Ruhl JE, Saliwanchik BR, Schaffer KK, Schiappucci E, Sievers C, Smecher G, Sobrin JA, Stark AA, Stephen J, Suzuki A, Tandoi C, Thompson KL, Thorne B, Trendafilova C, Tucker C, Umilta C, Veach T, Vieira JD, Viero MP, Wan Y, Wang G, Whitehorn N, Wu WLK, Yefremenko V, Young MR, Zebrowski JA, and Zemcov M

Abstract

We report results from an analysis aimed at detecting the trispectrum of the kinematic Sunyaev-Zel'dovich (kSZ) effect by combining data from the South Pole Telescope (SPT) and Herschel-SPIRE experiments over a 100  deg^{2} field. The SPT observations combine data from the previous and current surveys, namely SPTpol and SPT-3G, to achieve depths of 4.5, 3, and 16  μK-arcmin in bands centered at 95, 150, and 220 GHz. For SPIRE, we include data from the 600 and 857 GHz bands. We reconstruct the velocity-induced large-scale correlation of the small-scale kSZ signal with a quadratic estimator that uses two cosmic microwave background (CMB) temperature maps, constructed by optimally combining data from all the frequency bands. We reject the null hypothesis of a zero trispectrum at 10.3σ level. However, the measured trispectrum contains contributions from both the kSZ and other undesired components, such as CMB lensing and astrophysical foregrounds, with kSZ being sub-dominant. We use the agora simulations to estimate the expected signal from CMB lensing and astrophysical foregrounds. After accounting for the contributions from CMB lensing and foreground signals, we do not detect an excess kSZ-only trispectrum and use this nondetection to set constraints on reionization. By applying a prior based on observations of the Gunn-Peterson trough, we obtain an upper limit on the duration of reionization of Δz&#95;{re,50}<4.5 (95% confidence level). We find these constraints are fairly robust to foregrounds assumptions. This trispectrum measurement is independent of, but consistent with, Planck's optical depth measurement. This result is the first constraint on the epoch of reionization using the non-Gaussian nature of the kSZ signal.

Published
2024
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13. Coherent Coupling of Two Remote Magnonic Resonators Mediated by Superconducting Circuits.

Author

Li Y, Yefremenko VG, Lisovenko M, Trevillian C, Polakovic T, Cecil TW, Barry PS, Pearson J, Divan R, Tyberkevych V, Chang CL, Welp U, Kwok WK, and Novosad V

Abstract

We demonstrate microwave-mediated distant magnon-magnon coupling on a superconducting circuit platform, incorporating chip-mounted single-crystal Y&#95;{3}Fe&#95;{5}O&#95;{12} (YIG) spheres. Coherent level repulsion and dissipative level attraction between the magnon modes of the two YIG spheres are demonstrated. The former is mediated by cavity photons of a superconducting resonator, and the latter is mediated by propagating photons of a coplanar waveguide. Our results open new avenues toward exploring integrated hybrid magnonic networks for coherent information processing on a quantum-compatible superconducting platform.

Published
2022
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14. Broadband, millimeter-wave antireflection coatings for large-format, cryogenic aluminum oxide optics.

Author

Nadolski A, Vieira JD, Sobrin JA, Kofman AM, Ade PAR, Ahmed Z, Anderson AJ, Avva JS, Basu Thakur R, Bender AN, Benson BA, Bryant L, Carlstrom JE, Carter FW, Cecil TW, Chang CL, Cheshire JR, Chesmore GE, Cliche JF, Cukierman A, de Haan T, Dierickx M, Ding J, Dutcher D, Everett W, Farwick J, Ferguson KR, Florez L, Foster A, Fu J, Gallicchio J, Gambrel AE, Gardner RW, Groh JC, Guns S, Guyser R, Halverson NW, Harke-Hosemann AH, Harrington NL, Harris RJ, Henning JW, Holzapfel WL, Howe D, Huang N, Irwin KD, Jeong O, Jonas M, Jones A, Korman M, Kovac J, Kubik DL, Kuhlmann S, Kuo CL, Lee AT, Lowitz AE, McMahon J, Meier J, Meyer SS, Michalik D, Montgomery J, Natoli T, Nguyen H, Noble GI, Novosad V, Padin S, Pan Z, Paschos P, Pearson J, Posada CM, Quan W, Rahlin A, Riebel D, Ruhl JE, Sayre JT, Shirokoff E, Smecher G, Stark AA, Stephen J, Story KT, Suzuki A, Tandoi C, Thompson KL, Tucker C, Vanderlinde K, Wang G, Whitehorn N, Yefremenko V, Yoon KW, and Young MR

Abstract

We present two prescriptions for broadband ($ {\sim} 77 - 252\;{\rm GHz} $), millimeter-wave antireflection coatings for cryogenic, sintered polycrystalline aluminum oxide optics: one for large-format (700 mm diameter) planar and plano-convex elements, the other for densely packed arrays of quasi-optical elements-in our case, 5 mm diameter half-spheres (called "lenslets"). The coatings comprise three layers of commercially available, polytetrafluoroethylene-based, dielectric sheet material. The lenslet coating is molded to fit the 150 mm diameter arrays directly, while the large-diameter lenses are coated using a tiled approach. We review the fabrication processes for both prescriptions, then discuss laboratory measurements of their transmittance and reflectance. In addition, we present the inferred refractive indices and loss tangents for the coating materials and the aluminum oxide substrate. We find that at 150 GHz and 300 K the large-format coating sample achieves $ (97 \pm 2)\% $ transmittance, and the lenslet coating sample achieves $ (94 \pm 3)\% $ transmittance.

Published
2020
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