Design and performance of wide-band corrugated walls for the BICEP Array detector modules at 30/40 GHz

A. Soliman; P. A. R. Ade; Z. Ahmed; R. W. Aikin; K. D. Alexander; D. Barkats; S. J. Benton; C. A. Bischoff; J. J. Bock; R. Bowens-Rubin; J. A. Brevik; I. Buder; E. Bullock; V. Buza; J. Connors; J. Cornelison; B. P. Crill; M. Crumrine; M. Dierickx; L. Duband; C. Dvorkin; J. P. Filippini; S. Fliescher; J. A. Grayson; G. Hall; M. Halpern; S. Harrison; S. R. Hildebrandt; G. C. Hilton; H. Hui; K. D. Irwin; J. H. Kang; K. S. Karkare; E. Karpel; J. P. Kaufman; B. G. Keating; S. Kefeli; S. A. Kernasovskiy; J. M. Kovac; C. L. Kuo; K. Lau; N. A. Larsen; E. M. Leitch; M. Lueker; K. G. Megerian; L. Moncelsi; T. Namikawa; C. B. Netterfield; H. T. Nguyen; R. O'Brient; R. W. Ogburn IV; S. Palladino; C. Pryke; B. Racine; S. Richter; R. Schwarz; A. Schillaci; C. D. Sheehy; T. St. Germaine; Z. K. Staniszewski; B. Steinbach; R. Sudiwala; G. P. Teply; K. L. Thompson; J. E. Tolan; C. Tucker; A. D. Turner; C. Umiltà; J. Van Zyl; 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; C. Zhang

doi:10.1117/12.2312942

16 July 2018 Design and performance of wide-band corrugated walls for the BICEP Array detector modules at 30/40 GHz

A. Soliman, P. A. R. Ade, Z. Ahmed, R. W. Aikin , K. D. Alexander, D. Barkats, S. J. Benton, C. A. Bischoff, J. J. Bock, R. Bowens-Rubin, J. A. Brevik, I. Buder, E. Bullock, V. Buza, J. Connors, J. Cornelison, B. P. Crill, M. Crumrine, M. Dierickx, L. Duband, C. Dvorkin, J. P. Filippini, S. Fliescher, J. A. Grayson, G. Hall, M. Halpern, S. Harrison, S. R. Hildebrandt, G. C. Hilton, H. Hui, K. D. Irwin, J. H. Kang, K. S. Karkare, E. Karpel, J. P. Kaufman, B. G. Keating, S. Kefeli, S. A. Kernasovskiy, J. M. Kovac, C. L. Kuo, K. Lau, N. A. Larsen, E. M. Leitch, M. Lueker, K. G. Megerian, L. Moncelsi, T. Namikawa, C. B. Netterfield, H. T. Nguyen, R. O'Brient, R. W. Ogburn IV, S. Palladino, C. Pryke, B. Racine, S. Richter, R. Schwarz, A. Schillaci, C. D. Sheehy, T. St. Germaine, Z. K. Staniszewski, B. Steinbach, R. Sudiwala, G. P. Teply, K. L. Thompson, J. E. Tolan, C. Tucker, A. D. Turner, C. Umiltà, J. Van Zyl, 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, C. Zhang

Author Affiliations +

Proceedings Volume 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX; 107082G (2018) https://doi.org/10.1117/12.2312942
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

BICEP Array is a degree-scale Cosmic Microwave Background (CMB) experiment that will search for primordial B-mode polarization while constraining Galactic foregrounds. BICEP Array will be comprised of four receivers to cover a broad frequency range with channels at 30/40, 95, 150 and 220/270 GHz. The first low-frequency receiver will map synchrotron emission at 30 and 40 GHz and will deploy to the South Pole at the end of 2019. In this paper, we give an overview of the BICEP Array science and instrument, with a focus on the detector module. We designed corrugations in the metal frame of the module to suppress unwanted interactions with the antenna-coupled detectors that would otherwise deform the beams of edge pixels. This design reduces the residual beam systematics and temperature-to-polarization leakage due to beam steering and shape mismatch between polarized beam pairs. We report on the simulated performance of single- and wide-band corrugations designed to minimize these effects. Our optimized design alleviates beam differential ellipticity caused by the metal frame to about 7% over 57% bandwidth (25 to 45 GHz), which is close to the level due the bare antenna itself without a metal frame. Initial laboratory measurements are also presented.

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A. Soliman, P. A. R. Ade, Z. Ahmed, R. W. Aikin , K. D. Alexander, D. Barkats, S. J. Benton, C. A. Bischoff, J. J. Bock, R. Bowens-Rubin, J. A. Brevik, I. Buder, E. Bullock, V. Buza, J. Connors, J. Cornelison, B. P. Crill, M. Crumrine, M. Dierickx, L. Duband, C. Dvorkin, J. P. Filippini, S. Fliescher, J. A. Grayson, G. Hall, M. Halpern, S. Harrison, S. R. Hildebrandt, G. C. Hilton, H. Hui, K. D. Irwin, J. H. Kang, K. S. Karkare, E. Karpel, J. P. Kaufman, B. G. Keating, S. Kefeli, S. A. Kernasovskiy, J. M. Kovac, C. L. Kuo, K. Lau, N. A. Larsen, E. M. Leitch, M. Lueker, K. G. Megerian, L. Moncelsi, T. Namikawa, C. B. Netterfield, H. T. Nguyen, R. O'Brient, R. W. Ogburn IV, S. Palladino, C. Pryke, B. Racine, S. Richter, R. Schwarz, A. Schillaci, C. D. Sheehy, T. St. Germaine, Z. K. Staniszewski, B. Steinbach, R. Sudiwala, G. P. Teply, K. L. Thompson, J. E. Tolan, C. Tucker, A. D. Turner, C. Umiltà, J. Van Zyl, 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, and C. Zhang "Design and performance of wide-band corrugated walls for the BICEP Array detector modules at 30/40 GHz", Proc. SPIE 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 107082G (16 July 2018); https://doi.org/10.1117/12.2312942

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