Calibration measurements of the BICEP3 and BICEP array CMB polarimeters from 2017 to 2024

C. Giannakopoulos; C. Vergès; P. A. R. Ade; Z. Ahmed; M. Amiri; D. Barkats; R. Basu Thakur; C. A. Bischoff; D. Beck; J. J. Bock; H. Boenish; V. Buza; J. R. Cheshire IV; J. Connors; J. Cornelison; M. Crumrine; A. J. Cukierman; E. V. Denison; M. I. Dierickx; L. Duband; M. Eiben; B. D. Elwood; S. Fatigoni; J. P. Filippini; A. Fortes; M. Gao; N. Goeckner-Wald; D. C. Goldfinger; J. Grayson; P. K. Grimes; G. Hall; G. Halal; M. Halpern; E. Hand; S. A. Harrison; S. W. Henderson; J. Hubmayr; H. Hui; K. D. Irwin; J. Kang; K. S. Karkare; S. Kefeli; J. M. Kovac; C. L. Kuo; K. Lau; M. Lautzenhiser; A. Lennox; T. Liu; K. G. Megerian; O. Miller; L. Minutolo; L. Moncelsi; Y. Nakato; H. T. Nguyen; R. O'Brient; A. Patel; M. A. Petroff; A. Polish; N. Precup; T. Prouvé; C. Pryke; C. D. Reintsema; T. Romand; M. Salatino; A. Schillaci; B. L. Schmitt; B. Singari; A. Soliman; T. St. Germaine; A. Steiger; B. Steinbach; R. V. Sudiwala; K. L. Thompson; C. Tsai; C. Tucker; A. D. Turner; A. G. Vieregg; A. Wandui; A. C. Weber; J. Willmert; W. L. K. Wu; H. Yang; C. Yu; L. Zeng; C. Zhang; S. Zhang

doi:10.1117/12.3020443

24 September 2024 Calibration measurements of the BICEP3 and BICEP array CMB polarimeters from 2017 to 2024

C. Giannakopoulos, C. Vergès, P. A. R. Ade, Z. Ahmed, M. Amiri, D. Barkats, R. Basu Thakur, C. A. Bischoff, D. Beck, J. J. Bock, H. Boenish, V. Buza, J. R. Cheshire IV, J. Connors, J. Cornelison, M. Crumrine, A. J. Cukierman, E. V. Denison, M. I. Dierickx, L. Duband, M. Eiben, B. D. Elwood, S. Fatigoni, J. P. Filippini, A. Fortes, M. Gao, N. Goeckner-Wald, D. C. Goldfinger, J. Grayson, P. K. Grimes, G. Hall, G. Halal, M. Halpern, E. Hand, S. A. Harrison, S. W. Henderson, J. Hubmayr, H. Hui, K. D. Irwin, J. Kang, K. S. Karkare, S. Kefeli, J. M. Kovac, C. L. Kuo, K. Lau, M. Lautzenhiser, A. Lennox, T. Liu, K. G. Megerian, O. Miller, L. Minutolo, L. Moncelsi, Y. Nakato, H. T. Nguyen, R. O'Brient, A. Patel, M. A. Petroff, A. Polish, N. Precup, T. Prouvé, C. Pryke, C. D. Reintsema, T. Romand, M. Salatino, A. Schillaci, B. L. Schmitt, B. Singari, A. Soliman, T. St. Germaine, A. Steiger, B. Steinbach, R. V. Sudiwala, K. L. Thompson, C. Tsai, C. Tucker, A. D. Turner, A. G. Vieregg, A. Wandui, A. C. Weber, J. Willmert, W. L. K. Wu, H. Yang, C. Yu, L. Zeng, C. Zhang, S. Zhang

Author Affiliations +

Proceedings Volume PC13102, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII; PC1310219 (2024) https://doi.org/10.1117/12.3020443
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The BICEP3 and BICEP Array polarimeters are small-aperture refracting telescopes located at the South Pole designed to measure primordial gravitational wave signatures in the Cosmic Microwave Background (CMB) polarization, predicted by inflation. Constraining the inflationary signal requires not only excellent sensitivity, but also careful control of instrumental systematics. Both instruments use antenna-coupled orthogonally polarized detector pairs, and the polarized sky signal is reconstructed by taking the difference in each detector pair. As a result, the differential response between detectors within a pair becomes an important systematic effect we must control. Additionally, mapping the intensity and polarization response in regions away from the main beam can inform how sidelobe levels affect CMB measurements. Extensive calibration measurements are taken in situ every austral summer for control of instrumental systematics and instrument characterisation. In this work, we detail the set of beam calibration measurements that we conduct on the BICEP receivers, from deep measurements of main beam response to polarized beam response and sidelobe mapping. We discuss the impact of these measurements for instrumental systematics studies and design choices for future CMB receivers.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

C. Giannakopoulos, C. Vergès, P. A. R. Ade, Z. Ahmed, M. Amiri, D. Barkats, R. Basu Thakur, C. A. Bischoff, D. Beck, J. J. Bock, H. Boenish, V. Buza, J. R. Cheshire IV, J. Connors, J. Cornelison, M. Crumrine, A. J. Cukierman, E. V. Denison, M. I. Dierickx, L. Duband, M. Eiben, B. D. Elwood, S. Fatigoni, J. P. Filippini, A. Fortes, M. Gao, N. Goeckner-Wald, D. C. Goldfinger, J. Grayson, P. K. Grimes, G. Hall, G. Halal, M. Halpern, E. Hand, S. A. Harrison, S. W. Henderson, J. Hubmayr, H. Hui, K. D. Irwin, J. Kang, K. S. Karkare, S. Kefeli, J. M. Kovac, C. L. Kuo, K. Lau, M. Lautzenhiser, A. Lennox, T. Liu, K. G. Megerian, O. Miller, L. Minutolo, L. Moncelsi, Y. Nakato, H. T. Nguyen, R. O'Brient, A. Patel, M. A. Petroff, A. Polish, N. Precup, T. Prouvé, C. Pryke, C. D. Reintsema, T. Romand, M. Salatino, A. Schillaci, B. L. Schmitt, B. Singari, A. Soliman, T. St. Germaine, A. Steiger, B. Steinbach, R. V. Sudiwala, K. L. Thompson, C. Tsai, C. Tucker, A. D. Turner, A. G. Vieregg, A. Wandui, A. C. Weber, J. Willmert, W. L. K. Wu, H. Yang, C. Yu, L. Zeng, C. Zhang, and S. Zhang "Calibration measurements of the BICEP3 and BICEP array CMB polarimeters from 2017 to 2024", Proc. SPIE PC13102, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII, PC1310219 (24 September 2024); https://doi.org/10.1117/12.3020443

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