Bicep/Keck XV: The B icep3 Cosmic Microwave Background Polarimeter and the First Three-year Data Set

Bicep/Keck collaboration

doi:10.3847/1538-4357/ac4886

Bicep/Keck XV: The B icep3 Cosmic Microwave Background Polarimeter and the First Three-year Data Set

Bicep/Keck collaboration

Research output: Contribution to journal › Article › peer-review

Abstract

We report on the design and performance of the Bicep3 instrument and its first three-year data set collected from 2016 to 2018. Bicep3 is a 52 cm aperture refracting telescope designed to observe the polarization of the cosmic microwave background (CMB) on degree angular scales at 95 GHz. It started science observation at the South Pole in 2016 with 2400 antenna-coupled transition-edge sensor bolometers. The receiver first demonstrated new technologies such as large-diameter alumina optics, Zotefoam infrared filters, and flux-activated SQUIDs, allowing ∼10× higher optical throughput compared to the Keck design. Bicep3 achieved instrument noise equivalent temperatures of 9.2, 6.8, and 7.1 μKCMBs and reached Stokes Q and U map depths of 5.9, 4.4, and 4.4 μK arcmin in 2016, 2017, and 2018, respectively. The combined three-year data set achieved a polarization map depth of 2.8 μK arcmin over an effective area of 585 square degrees, which is the deepest CMB polarization map made to date at 95 GHz.

Original language	English (US)
Article number	77
Journal	Astrophysical Journal
Volume	927
Issue number	1
DOIs	https://doi.org/10.3847/1538-4357/ac4886
State	Published - Mar 1 2022

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.3847/1538-4357/ac4886

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@article{0ac475a644f34eb68ca0de1fb4222169,

title = "Bicep/Keck XV: The B icep3 Cosmic Microwave Background Polarimeter and the First Three-year Data Set",

abstract = "We report on the design and performance of the Bicep3 instrument and its first three-year data set collected from 2016 to 2018. Bicep3 is a 52 cm aperture refracting telescope designed to observe the polarization of the cosmic microwave background (CMB) on degree angular scales at 95 GHz. It started science observation at the South Pole in 2016 with 2400 antenna-coupled transition-edge sensor bolometers. The receiver first demonstrated new technologies such as large-diameter alumina optics, Zotefoam infrared filters, and flux-activated SQUIDs, allowing ∼10× higher optical throughput compared to the Keck design. Bicep3 achieved instrument noise equivalent temperatures of 9.2, 6.8, and 7.1 μKCMBs and reached Stokes Q and U map depths of 5.9, 4.4, and 4.4 μK arcmin in 2016, 2017, and 2018, respectively. The combined three-year data set achieved a polarization map depth of 2.8 μK arcmin over an effective area of 585 square degrees, which is the deepest CMB polarization map made to date at 95 GHz.",

author = "{Bicep/Keck collaboration} and Ade, {P. A.R.} and Z. Ahmed and M. Amiri and D. Barkats and Thakur, {R. Basu} and Bischoff, {C. A.} and D. Beck and Bock, {J. J.} and H. Boenish and E. Bullock and V. Buza and {Cheshire Iv}, {J. R.} and J. Connors and J. Cornelison and M. Crumrine and A. Cukierman and Denison, {E. V.} and M. Dierickx and L. Duband and M. Eiben and S. Fatigoni and Filippini, {J. P.} and S. Fliescher and N. Goeckner-Wald and Goldfinger, {D. C.} and J. Grayson and P. Grimes and G. Hall and G. Halal and M. Halpern and E. Hand and S. Harrison and S. Henderson and Hildebrandt, {S. R.} and Hilton, {G. C.} and J. Hubmayr and H. Hui and Irwin, {K. D.} and J. Kang and Karkare, {K. S.} and E. Karpel and S. Kefeli and Kernasovskiy, {S. A.} and Kovac, {J. M.} and Kuo, {C. L.} and K. Lau and Leitch, {E. M.} and A. Lennox and Megerian, {K. G.} and L. Minutolo",

note = "Publisher Copyright: {\textcopyright} 2022. The Author(s). Published by the American Astronomical Society.",

year = "2022",

month = mar,

day = "1",

doi = "10.3847/1538-4357/ac4886",

language = "English (US)",

volume = "927",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "1",

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TY - JOUR

T1 - Bicep/Keck XV

T2 - The B icep3 Cosmic Microwave Background Polarimeter and the First Three-year Data Set

AU - Bicep/Keck collaboration

AU - Ade, P. A.R.

AU - Ahmed, Z.

AU - Amiri, M.

AU - Barkats, D.

AU - Thakur, R. Basu

AU - Bischoff, C. A.

AU - Beck, D.

AU - Bock, J. J.

AU - Boenish, H.

AU - Bullock, E.

AU - Buza, V.

AU - Cheshire Iv, J. R.

AU - Connors, J.

AU - Cornelison, J.

AU - Crumrine, M.

AU - Cukierman, A.

AU - Denison, E. V.

AU - Dierickx, M.

AU - Duband, L.

AU - Eiben, M.

AU - Fatigoni, S.

AU - Filippini, J. P.

AU - Fliescher, S.

AU - Goeckner-Wald, N.

AU - Goldfinger, D. C.

AU - Grayson, J.

AU - Grimes, P.

AU - Hall, G.

AU - Halal, G.

AU - Halpern, M.

AU - Hand, E.

AU - Harrison, S.

AU - Henderson, S.

AU - Hildebrandt, S. R.

AU - Hilton, G. C.

AU - Hubmayr, J.

AU - Hui, H.

AU - Irwin, K. D.

AU - Kang, J.

AU - Karkare, K. S.

AU - Karpel, E.

AU - Kefeli, S.

AU - Kernasovskiy, S. A.

AU - Kovac, J. M.

AU - Kuo, C. L.

AU - Lau, K.

AU - Leitch, E. M.

AU - Lennox, A.

AU - Megerian, K. G.

AU - Minutolo, L.

PY - 2022/3/1

Y1 - 2022/3/1

N2 - We report on the design and performance of the Bicep3 instrument and its first three-year data set collected from 2016 to 2018. Bicep3 is a 52 cm aperture refracting telescope designed to observe the polarization of the cosmic microwave background (CMB) on degree angular scales at 95 GHz. It started science observation at the South Pole in 2016 with 2400 antenna-coupled transition-edge sensor bolometers. The receiver first demonstrated new technologies such as large-diameter alumina optics, Zotefoam infrared filters, and flux-activated SQUIDs, allowing ∼10× higher optical throughput compared to the Keck design. Bicep3 achieved instrument noise equivalent temperatures of 9.2, 6.8, and 7.1 μKCMBs and reached Stokes Q and U map depths of 5.9, 4.4, and 4.4 μK arcmin in 2016, 2017, and 2018, respectively. The combined three-year data set achieved a polarization map depth of 2.8 μK arcmin over an effective area of 585 square degrees, which is the deepest CMB polarization map made to date at 95 GHz.

AB - We report on the design and performance of the Bicep3 instrument and its first three-year data set collected from 2016 to 2018. Bicep3 is a 52 cm aperture refracting telescope designed to observe the polarization of the cosmic microwave background (CMB) on degree angular scales at 95 GHz. It started science observation at the South Pole in 2016 with 2400 antenna-coupled transition-edge sensor bolometers. The receiver first demonstrated new technologies such as large-diameter alumina optics, Zotefoam infrared filters, and flux-activated SQUIDs, allowing ∼10× higher optical throughput compared to the Keck design. Bicep3 achieved instrument noise equivalent temperatures of 9.2, 6.8, and 7.1 μKCMBs and reached Stokes Q and U map depths of 5.9, 4.4, and 4.4 μK arcmin in 2016, 2017, and 2018, respectively. The combined three-year data set achieved a polarization map depth of 2.8 μK arcmin over an effective area of 585 square degrees, which is the deepest CMB polarization map made to date at 95 GHz.

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U2 - 10.3847/1538-4357/ac4886

DO - 10.3847/1538-4357/ac4886

M3 - Article

AN - SCOPUS:85126602355

SN - 0004-637X

VL - 927

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 77

ER -

Bicep/Keck XV: The B icep3 Cosmic Microwave Background Polarimeter and the First Three-year Data Set

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