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Analysis of Temperature-to-Polarization Leakage in BICEP3 and Keck CMB Data from 2016 to 2018

St. Germaine, Tyler and Ade, P.A.R. and Ahmed, Zeeshan and Amiri, Mandana and Barkats, Denis and Basu Thakur, R. and Bischoff, Colin A. and Bock, J. J. and Boenish, Hans and Bullock, Eric and Buza, Victor and Cheshire, James R. and Connors, Jake and Cornelison, James and Crumrine, Michael and Cukierman, Ari Jozef and Denison, Edward and Dierickx, Marion and Duband, Lionel and Eiben, Miranda and Fatigoni, Sofia and Filippini, Jeff and Fliescher, Stefan and Goeckner-Wald, Neil and Goldfinger, David and Grayson, James A. and Grimes, Paul and Hall, Grantland and Halpern, Mark and Harrison, Sam A. and Henderson, Shawn and Hildebrandt, S. R. and Hilton, Gene C. and Hubmayr, Johannes and Hui, H. and Irwin, Kent D. and Kang, J. and Karkare, Kirit S. and Karpel, Ethan and Kefeli, S. and Kernasovskiy, Sarah A. and Kovac, John M. and Kuo, Chao-Lin and Lau, King and Leitch, Erik M. and Megerian, K. G. and Minutolo, L. and Moncelsi, L. and Nakato, Yuka and Namikawa, Toshiya and Nguyen, H. T. and O'Brient, R. and Ogburn, R. Walt and Palladino, Steven and Precup, Nathan and Prouve, Thomas and Pryke, Clement and Racine, Benjamin and Reintsema, Carl and Richter, Steffen and Schillaci, A. and Schmitt, Benjamin and Schwartz, Robert and Sheehy, Chris D. and Soliman, A. and Steinbach, B. and Sudiwala, Rashmi and Teply, Grant and Thompson, Keith L. and Tolan, James E. and Tucker, Carole and Turner, A. D. and Umilta, Caterina and Vieregg, Abigail G. and Wandui, A. and Weber, A. C. and Wiebe, Don and Willmert, Justin and Wong, Chin Lin and Wu, Wai Ling K. and Yang, Hung-I and Yoon, Ki Won and Young, Edward and Yu, Cyndia and Zeng, Lingzhen and Zhang, C. and Zhang, S. (2020) Analysis of Temperature-to-Polarization Leakage in BICEP3 and Keck CMB Data from 2016 to 2018. In: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X. Proceedings of SPIE. No.11453. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 114532E. ISBN 9781510636934.

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The Bicep/Keck Array experiment is a series of small-aperture refracting telescopes observing degree-scale Cosmic Microwave Background polarization from the South Pole in search of a primordial B-mode signature. As a pair differencing experiment, an important systematic that must be controlled is the differential beam response between the co-located, orthogonally polarized detectors. We use high-fidelity, in-situ measurements of the beam response to estimate the temperature-to-polarization (T → P) leakage in our latest data including observations from 2016 through 2018. This includes three years of Bicep3 observing at 95 GHz, and multifrequency data from Keck Array. Here we present band-averaged far-field beam maps, differential beam mismatch, and residual beam power (after filtering out the leading difference modes via deprojection) for these receivers. We show preliminary results of "beam map simulations," which use these beam maps to observe a simulated temperature (no Q/U) sky to estimate T → P leakage in our real data.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Basu Thakur, R.0000-0002-3351-3078
Bock, J. J.0000-0002-5710-5212
Hildebrandt, S. R.0000-0003-0220-0009
Hui, H.0000-0001-5812-1903
Minutolo, L.0000-0002-4876-112X
Moncelsi, L.0000-0002-4242-3015
Schillaci, A.0000-0002-0512-1042
Zhang, C.0000-0001-8288-5823
Additional Information:© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE). The BICEP/Keck project (including BICEP2, BICEP3 and BICEP Array) have been made possible through a series of grants from the National Science Foundation including 0742818, 0742592, 1044978, 1110087, 1145172, 1145143, 1145248, 1639040, 1638957, 1638978, 1638970, 1726917, 1313010, 1313062, 1313158, 1313287, 0960243, 1836010, 1056465, & 1255358 and by the Keck Foundation. The development of antenna-coupled detector technology was supported by the JPL Research and Technology Development Fund and NASA Grants 06-ARPA206-0040, 10-SAT10-0017, 12-SAT12-0031, 14-SAT14-0009, 16-SAT16-0002, & 18-SAT18-0017. The development and testing of focal planes were supported by the Gordon and Betty Moore Foundation at Caltech. Readout electronics were supported by a Canada Foundation for Innovation grant to UBC. The computations in this paper were run on the Odyssey cluster supported by the FAS Science Division Research Computing Group at Harvard University. The analysis effort at Stanford and SLAC was partially supported by the Department of Energy, Contract DE-AC02-76SF00515. We thank the staff of the U.S. Antarctic Program and in particular the South Pole Station without whose help this research would not have been possible. Tireless administrative support was provided by Kathy Deniston, Sheri Stoll, Irene Coyle, Donna Hernandez, and Dana Volponi.
Group:Astronomy Department
Funding AgencyGrant Number
W. M. Keck FoundationUNSPECIFIED
JPL Research and Technology Development FundUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Canada Foundation for InnovationUNSPECIFIED
Harvard UniversityUNSPECIFIED
Department of Energy (DOE)DE-AC02-76SF00515
Subject Keywords:Inflation, Gravitational waves, Cosmic microwave background, Polarization, BICEP, Keck Array
Series Name:Proceedings of SPIE
Issue or Number:11453
Record Number:CaltechAUTHORS:20201217-130800252
Persistent URL:
Official Citation:T. St. Germaine, P. A. R. Ade, Z. Ahmed, M. Amiri, D. Barkats, R. Basu Thakur, C. A. Bischoff, J. J. Bock, H. Boenish, E. Bullock, V. Buza, J. R. Cheshire IV, J. A. Connors, J. Cornelison, M. Crumrine, A. Cukierman, E. Denison, M. Dierickx, L. Duband, M. Eiben, S. Fatigoni, J. P. Filippini, S. Fliescher, N. Goeckner-Wald, D. C. Goldfinger, J. A. Grayson, P. Grimes, G. Hall, M. Halpern, S. A. Harrison, S. Henderson, S. R. Hildebrandt, G. C. Hilton, J. Hubmayr, H. Hui, K. D. Irwin, J. Kang, K. S. Karkare, E. Karpel, S. Kefeli, S. A. Kernasovskiy, J. M. Kovac, C. L. Kuo, K. Lau, E. M. Leitch, K. G. Megerian, L. Minutolo, L. Moncelsi, Y. Nakato, T. Namikawa, H. T. Nguyen, R. O'brient, R. W. Ogburn IV, S. Palladino, N. Precup, T. Prouve, C. Pryke, B. Racine, C. D. Reintsema, S. Richter, A. Schillaci, B. L. Schmitt, R. Schwarz, C. D. Sheehy, A. Soliman, B. Steinbach, R. Sudiwala, G. P. Teply, K. L. Thompson, J. E. Tolan, C. Tucker, A. D. Turner, C. Umiltà, A. G. Vieregg, A. Wandui, A. C. Weber, D. V. Wiebe, J. Willmert, C. L. Wong, W. L. K. Wu, E. Yang, K. W. Yoon, E. Young, C. Yu, L. Zeng, Cheng Zhang, and S. Zhang "Analysis of Temperature-to-Polarization Leakage in BICEP3 and Keck CMB Data from 2016 to 2018", Proc. SPIE 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X, 114532E (15 December 2020);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107161
Deposited By: Tony Diaz
Deposited On:17 Dec 2020 21:45
Last Modified:08 Feb 2022 17:00

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