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BICEP Array: 150 GHz detector module development

Schillaci, A. and Ade, P. A. R. and Ahmed, Z. and Amiri, M. and Barkats, D. and Basu Thakur, R. and Bischoff, C. A. and Beck, D. and Bock, J. J. and Buza, V. and Cheshire, J. and Connors, J. and Cornelison, J. and Crumrine, M. and Cukierman, A. and Denison, E. and Dierickx, M. and Duband, L. and Eiben, M. and Fatigoni, S. and Filippini, J. P. and Giannakopoulos, C. and Goeckner-Wald, N. and Goldfinger, D. and Grayson, J. A. and Grimes, P. and Hall, G. and Halal, G. and Halpern, M. and Hand, E. and Harrison, S. and Henderson, S. and Hildebrandt, S. R. and Hilton, G. C. and Hubmayr, J. and Hui, H. and Irwin, K. D. and Kang, J. and Karkare, K. S. and Kefeli, S. and Kovac, J. M. and Kuo, C. L. and Lau, K. and Leitch, E. M. and Lennox, A. and Megerian, K. G. and Miller, O. Y. and Minutolo, L. and Moncelsi, L. and Nakato, Y. and Namikawa, T. and Nguyen, H. T. and O'Brient, R. and Palladino, S. and Petroff, M. and Precup, N. and Prouve, T. and Pryke, C. and Racine, B. and Reintsema, C. D. and Schmitt, B. L. and Singari, B. and Soliman, A. and St. Germaine, T. and Steinbach, B. and Sudiwala, R. V. and Thompson, K. L. and Tucker, C. and Turner, A. D. and Umilta, C. and Verges, 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 Zeng, L. and Zhang, C. and Zhang, S. (2021) BICEP Array: 150 GHz detector module development. . (Unpublished)

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The BICEP/Keck Collaboration is currently leading the quest to the highest sensitivity measurements of the polarized CMB anisotropies on degree scale with a series of cryogenic telescopes, of which BICEP Array is the latest Stage-3 upgrade with a total of ∼32,000 detectors. The instrument comprises 4 receivers spanning 30 to 270 GHz, with the low-frequency 30/40 GHz deployed to the South Pole Station in late 2019. The full complement of receivers is forecast to set the most stringent constraints on the tensor to scalar ratio r. Building on these advances, the overarching small-aperture telescope concept is already being used as the reference for further Stage-4 experiment design. In this paper I will present the development of the BICEP Array 150 GHz detector module and its fabrication requirements, with highlights on the high-density time division multiplexing (TDM) design of the cryogenic circuit boards. The low-impedance wiring required between the detectors and the first-stage SQUID amplifiers is crucial to maintain a stiff voltage bias on the detectors. A novel multi-layer FR4 Printed Circuit Board (PCB) with superconducting traces, capable of reading out up to 648 detectors, is presented along with its validation tests. I will also describe an ultra-high density TDM detector module we developed for a CMB-S4-like experiment that allows up to 1,920 detectors to be read out. TDM has been chosen as the detector readout technology for the Cosmic Microwave Background Stage-4 (CMB-S4) experiment based on its proven low-noise performance, predictable costs and overall maturity of the architecture. The heritage for TDM is rooted in mm- and submm-wave experiments dating back 20 years and has since evolved to support a multiplexing factor of 64x in Stage-3 experiments.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Schillaci, A.0000-0002-0512-1042
Ade, P. A. R.0000-0002-5127-0401
Basu Thakur, R.0000-0002-3351-3078
Bischoff, C. A.0000-0001-9185-6514
Bock, J. J.0000-0002-5710-5212
Buza, V.0000-0002-1345-4322
Connors, J.0000-0002-6094-2943
Cukierman, A.0000-0002-7471-719X
Dierickx, M.0000-0002-3519-8593
Fatigoni, S.0000-0002-3790-7314
Filippini, J. P.0000-0001-8217-6832
Hall, G.0000-0002-6299-8385
Halpern, M.0000-0002-1760-0868
Hildebrandt, S. R.0000-0003-0220-0009
Hilton, G. C.0000-0003-4247-467X
Hubmayr, J.0000-0002-2781-9302
Hui, H.0000-0001-5812-1903
Irwin, K. D.0000-0002-2998-9743
Karkare, K. S.0000-0002-5215-6993
Minutolo, L.0000-0002-4876-112X
Moncelsi, L.0000-0002-4242-3015
Namikawa, T.0000-0003-3070-9240
O'Brient, R.0000-0002-4987-6375
Racine, B.0000-0001-8861-3052
Steinbach, B.0000-0001-6544-7469
Umilta, C.0000-0002-6805-6188
Wandui, A.0000-0002-8232-7343
Wu, W. L. K.0000-0001-5411-6920
Zhang, C.0000-0001-8288-5823
Additional Information: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 U.S. DoE Office of Science. 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, Nancy Roth-Rappard, 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:Cosmology, B-Mode polarization, Cosmic Microwave Background, BICEP Array, Time Division Multiplexing, Transition Edge Sensor
Record Number:CaltechAUTHORS:20220411-225204179
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:114226
Deposited By: George Porter
Deposited On:12 Apr 2022 19:07
Last Modified:02 Jun 2023 01:20

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