7 March 2017 Highly uniform 150 mm diameter multichroic polarimeter array deployed for CMB detection
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Abstract
The Advanced Atacama Cosmology Telescope Polarimeter is an upgraded receiver for the Atacama Cosmology Telescope, which has begun making measurements of the small angular scale polarization anisotropies in the Cosmic Microwave Background using the first of four new multichroic superconducting detector arrays. Here, we review all details of the optimization and characterization of this first array, which features 2012 AlMn transition- edge sensor bolometers operating at 150 and 230 GHz. We present critical temperatures, thermal conductivities, saturation powers, time constants, and sensitivities for the array. The results show high uniformity across the 150 mm wafer and good performance in the field.
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Shuay-Pwu Patty Ho, Jason Austermann, James A. Beall, Steve K. Choi, Nicholas F. Cothard, Kevin T. Crowley, Rahul Datta, Mark J. Devlin, Shannon M. Duff, Patricio A. Gallardo, Matthew Hasselfield, Shawn W. Henderson, Gene Hilton, Johannes Hubmayr, Brian J. Koopman, Yaqiong Li, Jeffrey McMahon, Michael D. Niemack, Maria Salatino, Sara M. Simon, Suzanne T. Staggs, Jonathan T. Ward, Joel N. Ullom, Eve M. Vavagiakis, Edward J. Wollack, "Highly uniform 150 mm diameter multichroic polarimeter array deployed for CMB detection", Proc. SPIE 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII, 991418 (7 March 2017); doi: 10.1117/12.2233113; https://doi.org/10.1117/12.2233113
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