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Proceedings Paper

Performance of the advanced ACTPol low frequency array
Author(s): Yaqiong Li; Jason E. Austermann; James A. Beall; Sarah Marie Bruno; Steve K. Choi; Nicholas F. Cothard; Kevin T. Crowley; Shannon M. Duff; Patricio A. Gallardo; Shawn W. Henderson; Shuay-Pwu Patty Ho; Johannes Hubmayr; Brian J. Koopman; Jeff J. McMahon; Michael D. Niemack; Maria Salatino; Sara M. Simon; Suzanne T. Staggs; Jason R. Stevens; Joel N. Ullom; Jonathan Ward; Edward J. Wollack
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Paper Abstract

The Advanced Atacama Cosmology Telescope Polarimeter (AdvACT) is an upgraded instrument for the Atacama Cosmology Telescope, which uses transition-edge sensor (TES) detector arrays to measure cosmic microwave background (CMB) polarization anisotropies in multiple frequency bands. We review the integration and characterization of the final polarimeter array, which is the low frequency (LF) array, consisting of 292 TES bolometers observing in two bands centered at 27 GHz and 39 GHz. This array is sensitive to synchrotron radiation from our galaxy as well as to the CMB, and complements the AdvACT arrays operating at 90, 150 and 230 GHz to provide robust detection and removal of foreground contamination. We present detector parameters for the LF array measured in the lab, including saturation powers, critical temperatures, thermal conductivities, time constants and optical efficiencies, and their uniformity across the entire wafer.

Paper Details

Date Published: 24 July 2018
PDF: 9 pages
Proc. SPIE 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX, 107080A (24 July 2018); doi: 10.1117/12.2313942
Show Author Affiliations
Yaqiong Li, Princeton Univ. (United States)
Jason E. Austermann, National Institute of Standards and Technology (United States)
James A. Beall, National Institute of Standards and Technology (United States)
Sarah Marie Bruno, Princeton Univ. (United States)
Steve K. Choi, Princeton Univ. (United States)
Nicholas F. Cothard, Cornell Univ. (United States)
Kevin T. Crowley, Princeton Univ. (United States)
Shannon M. Duff, National Institute of Standards and Technology (United States)
Patricio A. Gallardo, Cornell Univ. (United States)
Shawn W. Henderson, Cornell Univ. (United States)
Shuay-Pwu Patty Ho, Princeton Univ. (United States)
Johannes Hubmayr, National Institute of Standards and Technology (United States)
Brian J. Koopman, Cornell Univ. (United States)
Jeff J. McMahon, Univ. of Michigan (United States)
Michael D. Niemack, Cornell Univ. (United States)
Maria Salatino, Princeton Univ. (United States)
Sara M. Simon, Univ. of Michigan (United States)
Suzanne T. Staggs, Princeton Univ. (United States)
Jason R. Stevens, Cornell Univ. (United States)
Joel N. Ullom, National Institute of Standards and Technology (United States)
Jonathan Ward, Univ. of Pennsylvania (United States)
Edward J. Wollack, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 10708:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX
Jonas Zmuidzinas; Jian-Rong Gao, Editor(s)

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