Improved polarization calibration of the BICEP3 CMB polarimeter at the South Pole

J. Cornelison; C. Vergès; P. A. R. Ade; Z. Ahmed; M. Amiri; D. Barkats; R. Basu Thakur; D. Beck; C. A. Bischoff; J. J. Bock; V. Buza; J. R. Cheshire IV; J. Connors; M. Crumrine; A. J. Cukierman; E. V. Denison; M. I. Dierickx; L. Duband; M. Eiben; S. Fatigoni; J. P. Filippini; C. Giannakopoulos; N. Goeckner-Wald; D. C. Goldfinger; J. Grayson; P. K. Grimes; G. Hall; G. Halal; M. Halpern; E. Hand; S. A. Harrison; S. Henderson; S. R. Hildebrandt; G. C. Hilton; J. Hubmayr; H. Hui; K. D. Irwin; J. Kang; K. S. Karkare; S. Kefeli; J. M. Kovac; C. L. Kuo; K. Lau; E. M. Leitch; A. Lennox; T. Liu; K. Look; K. G. Megerian; L. Minutolo; L. Moncelsi; Y. Nakato; T. Namikawa; H. T. Nguyen; R. O'brient; S. Palladino; M. A. Petroff; T. Prouve; C. Pryke; B. Racine; C. D. Reintsema; M. Salatino; A. Schillaci; B. L. Schmitt; B. Singari; A. Soliman; T. St. Germaine; B. Steinbach; R. V. Sudiwala; K. L. Thompson; C. Tsai; C. Tucker; A. D. Turner; C. Umiltà; A. G. Vieregg; A. Wandui; A. C. Weber; D. V. Wiebe; J. Willmert; W. L. K. Wu; H. Yang; K. W. Yoon; E. Young; C. Yu; L. Zeng; C. Zhang; S. Zhang

doi:10.1117/12.2620212

31 August 2022 Improved polarization calibration of the BICEP3 CMB polarimeter at the South Pole

J. Cornelison, C. Vergès, P. A. R. Ade, Z. Ahmed, M. Amiri, D. Barkats, R. Basu Thakur, D. Beck, C. A. Bischoff, J. J. Bock, V. Buza, J. R. Cheshire IV, J. Connors, M. Crumrine, A. J. Cukierman, E. V. Denison, M. I. Dierickx, L. Duband, M. Eiben, S. Fatigoni, J. P. Filippini, C. Giannakopoulos, N. Goeckner-Wald, D. C. Goldfinger, J. Grayson, P. K. Grimes, G. Hall, G. Halal, M. Halpern, E. Hand, S. A. Harrison, S. Henderson, S. R. Hildebrandt, G. C. Hilton, J. Hubmayr, H. Hui, K. D. Irwin, J. Kang, K. S. Karkare, S. Kefeli, J. M. Kovac, C. L. Kuo, K. Lau, E. M. Leitch, A. Lennox, T. Liu, K. Look, K. G. Megerian, L. Minutolo, L. Moncelsi, Y. Nakato, T. Namikawa, H. T. Nguyen, R. O'brient, S. Palladino, M. A. Petroff, T. Prouve, C. Pryke, B. Racine, C. D. Reintsema, M. Salatino, A. Schillaci, B. L. Schmitt, B. Singari, A. Soliman, T. St. Germaine, B. Steinbach, R. V. Sudiwala, K. L. Thompson, C. Tsai, C. Tucker, A. D. Turner, C. Umiltà, A. G. Vieregg, A. Wandui, A. C. Weber, D. V. Wiebe, J. Willmert, W. L. K. Wu, H. Yang, K. W. Yoon, E. Young, C. Yu, L. Zeng, C. Zhang, S. Zhang

Author Affiliations +

Proceedings Volume 12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI; 121901X (2022) https://doi.org/10.1117/12.2620212
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

The BICEP3 Polarimeter is a small aperture, refracting telescope, dedicated to the observation of the Cosmic Microwave Background (CMB) at 95GHz. It is designed to target degree angular scale polarization patterns, in particular the very-much-sought-after primordial B-mode signal, which is a unique signature of cosmic inflation. The polarized signal from the sky is reconstructed by differencing co-localized, orthogonally polarized superconducting Transition Edge Sensor (TES) bolometers. In this work, we present absolute measurements of the polarization response of the detectors for more than approximately 800 functioning detector pairs of the BICEP3 experiment, out of a total of approximately 1000. We use a specifically designed Rotating Polarized Source (RPS) to measure the polarization response at multiple source and telescope boresight rotation angles, to fully map the response over 360 degrees. We present here polarization properties extracted from on-site calibration data taken in January 2022. A similar calibration campaign was performed in 2018, but we found that our constraint was dominated by systematics on the level of approximately 0.5° . After a number of improvements to the calibration set-up, we are now able to report a significantly lower level of systematic contamination. In the future, such precise measurements will be used to constrain physics beyond the standard cosmological model, namely cosmic birefringence.

Citation Download Citation

J. Cornelison, C. Vergès, P. A. R. Ade, Z. Ahmed, M. Amiri, D. Barkats, R. Basu Thakur, D. Beck, C. A. Bischoff, J. J. Bock, V. Buza, J. R. Cheshire IV, J. Connors, M. Crumrine, A. J. Cukierman, E. V. Denison, M. I. Dierickx, L. Duband, M. Eiben, S. Fatigoni, J. P. Filippini, C. Giannakopoulos, N. Goeckner-Wald, D. C. Goldfinger, J. Grayson, P. K. Grimes, G. Hall, G. Halal, M. Halpern, E. Hand, S. A. Harrison, S. Henderson, S. R. Hildebrandt, G. C. Hilton, J. Hubmayr, H. Hui, K. D. Irwin, J. Kang, K. S. Karkare, S. Kefeli, J. M. Kovac, C. L. Kuo, K. Lau, E. M. Leitch, A. Lennox, T. Liu, K. Look, K. G. Megerian, L. Minutolo, L. Moncelsi, Y. Nakato, T. Namikawa, H. T. Nguyen, R. O'brient, S. Palladino, M. A. Petroff, T. Prouve, C. Pryke, B. Racine, C. D. Reintsema, M. Salatino, A. Schillaci, B. L. Schmitt, B. Singari, A. Soliman, T. St. Germaine, B. Steinbach, R. V. Sudiwala, K. L. Thompson, C. Tsai, C. Tucker, A. D. Turner, C. Umiltà, A. G. Vieregg, A. Wandui, A. C. Weber, D. V. Wiebe, J. Willmert, W. L. K. Wu, H. Yang, K. W. Yoon, E. Young, C. Yu, L. Zeng, C. Zhang, and S. Zhang "Improved polarization calibration of the BICEP3 CMB polarimeter at the South Pole", Proc. SPIE 12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI, 121901X (31 August 2022); https://doi.org/10.1117/12.2620212

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available