Detector and readout characterization for POLARBEAR-2b

J. Ito; L. N. Lowry; T. Elleflot; K. T. Crowley; L. Howe; P. Siritanasak; T. Adkins; K. Arnold; C. Baccigalupi; D. Barron; B. Bixler; Y. Chinone; J. Groh; M. Hazumi; C. A. Hill; O. Jeong; B. Keating; A. Kusaka; A. T. Lee; K. Mitchell; M. Navaroli; A. T. P. Pham; C. Raum; C. L. Reichardt; T. J. Sasse; J. Seibert; A. Suzuki; S. Takakura; G. P. Teply; C. Tsai; B. Westbrook

doi:10.1117/12.2562766

13 December 2020 Detector and readout characterization for POLARBEAR-2b

J. Ito, L. N. Lowry, T. Elleflot, K. T. Crowley, L. Howe, P. Siritanasak, T. Adkins, K. Arnold, C. Baccigalupi, D. Barron, B. Bixler, Y. Chinone, J. Groh, M. Hazumi, C. A. Hill, O. Jeong, B. Keating, A. Kusaka, A. T. Lee, K. Mitchell, M. Navaroli, A. T. P. Pham, C. Raum, C. L. Reichardt, T. J. Sasse, J. Seibert, A. Suzuki, S. Takakura, G. P. Teply, C. Tsai, B. Westbrook

Author Affiliations +

Proceedings Volume 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X; 1145320 (2020) https://doi.org/10.1117/12.2562766
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

The Simons Array is a set of three millimeter-wavelength telescopes in the Atacama Desert in northern Chile. It is designed to measure the polarization of the cosmic microwave background caused by density perturbations, gravitational lensing, and primordial gravitational waves. Polarbear-2b (PB-2b) is the receiver that will be mounted onto the Paul Simons Telescope, the second Simons Array telescope. Each pixel in the PB-2b focal plane has a broadband sinuous antenna coupled to transition-edge sensor (TES) bolometers. In all, there are more than 7,500 antenna-coupled TES bolometers which are biased and read out using a digital frequency-domain multiplexing framework. We implement a multiplexing factor of 40 with resonator frequencies ranging from 1.6 MHz to 4.6 MHz. These resonators are connected to superconducting quantum interference device arrays that provide a signal amplification stage. We present Polarbear-2b detector and readout characterization results from in-lab testing that enabled the deployment of PB-2b to Chile in March 2020.

Conference Presentation

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J. Ito, L. N. Lowry, T. Elleflot, K. T. Crowley, L. Howe, P. Siritanasak, T. Adkins, K. Arnold, C. Baccigalupi, D. Barron, B. Bixler, Y. Chinone, J. Groh, M. Hazumi, C. A. Hill, O. Jeong, B. Keating, A. Kusaka, A. T. Lee, K. Mitchell, M. Navaroli, A. T. P. Pham, C. Raum, C. L. Reichardt, T. J. Sasse, J. Seibert, A. Suzuki, S. Takakura, G. P. Teply, C. Tsai, and B. Westbrook "Detector and readout characterization for POLARBEAR-2b", Proc. SPIE 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X, 1145320 (13 December 2020); https://doi.org/10.1117/12.2562766

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