A Caltech Library Service

Optical Design and Characterization of 40-GHz Detector and Module for the BICEP Array

Soliman, A. and Ade, P. A. R. and Ahmed, Z. and Amiri, M. and Barkats, D. and Basu-Thakur, R. and Bischoff, C. A. and Bock, J. J. and Boenish, H. and Bullock, E. and Buza, V. and Cheshire, J. and Connors, J. and Cornelison, J. and Crumrine, M. and Cukierman, A. and Dierickx, M. and Duband, L. and Fatigoni, S. and Filippini, J. P. and Hall, G. and Halpern, M. and Harrison, S. and Henderson, S. and Hildebrandt, S. R. and Hilton, G. C. and Hui, H. and Irwin, K. D. and Kang, J. and Karkare, K. S. and Karpel, E. and Kefeli, S. and Kovac, J. M. and Kuo, C. L. and Lau, K. and Megerian, K. G. and Moncelsi, L. and Namikawa, T. and Nguyen, H. T. and O’Brient, R. and Palladino, S. and Prouve, T. and Precup, N. and Pryke, C. and Racine, B. and Reintsema, C. D. and Richter, S. and Schmitt, B. and Schwarz, R. and Sheehy, C. D. and Schillaci, A. and St. Germaine, T. and Steinbach, B. and Sudiwala, R. V. and Thompson, K. L. and Tucker, C. and Turner, A. D. and Umiltà, C. and Vieregg, A. G. and Wandui, A. and Weber, A. C. and Wiebe, D. V. and Willmert, J. and Wu, W. L. K. and Yang, E. and Yoon, K. W. and Young, E. and Yu, C. and Zhang, C. (2020) Optical Design and Characterization of 40-GHz Detector and Module for the BICEP Array. Journal of Low Temperature Physics, 199 (3-4). pp. 1118-1126. ISSN 0022-2291. doi:10.1007/s10909-019-02299-z.

[img] PDF - Accepted Version
See Usage Policy.


Use this Persistent URL to link to this item:


Families of cosmic inflation models predict a primordial gravitational-wave background that imprints B-mode polarization pattern in the cosmic microwave background (CMB). High-sensitivity instruments with wide frequency coverage and well-controlled systematic errors are needed to constrain the faint B-mode amplitude. We have developed antenna-coupled transition edge sensor arrays for high-sensitivity polarized CMB observations over a wide range of millimeter-wave bands. BICEP array, the latest phase of the BICEP/Keck experiment series, is a multi-receiver experiment designed to search for inflationary B-mode polarization to a precision σ(r) between 0.002 and 0.004 after 3 full years of observations, depending on foreground complexity and the degree of lensing removal. We describe the electromagnetic design and measured performance of BICEP array’s low-frequency 40-GHz detector, their packaging in focal plane modules, and optical characterization including efficiency and beam matching between polarization pairs. We summarize the design and simulated optical performance, including an approach to improve the optical efficiency due to mismatch losses. We report the measured beam maps for a new broadband corrugation design to minimize beam differential ellipticity between polarization pairs caused by interactions with the module housing frame, which helps minimize polarized beam mismatch that converts CMB temperature to polarization (T→P) anisotropy in CMB maps.

Item Type:Article
Related URLs:
URLURL TypeDescription ReadCube access Paper
Ade, P. A. R.0000-0002-5127-0401
Basu-Thakur, R.0000-0002-3351-3078
Bock, J. J.0000-0002-5710-5212
Connors, J.0000-0002-6094-2943
Cukierman, A.0000-0002-7471-719X
Dierickx, M.0000-0002-3519-8593
Filippini, J. P.0000-0001-8217-6832
Halpern, M.0000-0002-1760-0868
Hildebrandt, S. R.0000-0003-0220-0009
Hilton, G. C.0000-0003-4247-467X
Karkare, K. S.0000-0002-5215-6993
Moncelsi, L.0000-0002-4242-3015
Schillaci, A.0000-0002-0512-1042
Tucker, C.0000-0002-1851-3918
Wandui, A.0000-0002-8232-7343
Wu, W. L. K.0000-0001-5411-6920
Zhang, C.0000-0001-8288-5823
Additional Information:© 2020 Springer Nature Switzerland AG. Received 05 September 2019; Accepted 03 December 2019; Published 24 February 2020. The BICEP/Keck project has 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 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. 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 is partially supported by the US DoE Office of Science. We thank the staff of the US 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)UNSPECIFIED
Subject Keywords:BICEP array; Cosmology; Inflation; CMB; Antennas; Detectors; Polarization
Issue or Number:3-4
Record Number:CaltechAUTHORS:20200225-072133380
Persistent URL:
Official Citation:Soliman, A., Ade, P.A.R., Ahmed, Z. et al. Optical Design and Characterization of 40-GHz Detector and Module for the BICEP Array. J Low Temp Phys 199, 1118–1126 (2020).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:101517
Deposited By: Tony Diaz
Deposited On:25 Feb 2020 17:00
Last Modified:16 Nov 2021 18:03

Repository Staff Only: item control page