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Proceedings Paper

Readout of two-kilopixel transition-edge sensor arrays for Advanced ACTPol
Author(s): Shawn W. Henderson; Jason R. Stevens; Mandana Amiri; Jason Austermann; James A. Beall; Saptarshi Chaudhuri; Hsiao-Mei Cho; Steve K. Choi; Nicholas F. Cothard; Kevin T. Crowley; Shannon M. Duff; Colin P. Fitzgerald; Patricio A. Gallardo; Mark Halpern; Matthew Hasselfield; Gene Hilton; Shuay-Pwu Patty Ho; Johannes Hubmayr; Kent D. Irwin; Brian J. Koopman; Dale Li; Yaqiong Li; Jeff McMahon; Federico Nati; Michael Niemack; Carl D. Reintsema; Maria Salatino; Alessandro Schillaci; Benjamin L. Schmitt; Sara M. Simon; Suzanne T. Staggs; Eve M. Vavagiakis; Jonathan T. Ward
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Paper Abstract

Advanced ACTPol is an instrument upgrade for the six-meter Atacama Cosmology Telescope (ACT) designed to measure the cosmic microwave background (CMB) temperature and polarization with arcminute-scale angular resolution. To achieve its science goals, Advanced ACTPol utilizes a larger readout multiplexing factor than any previous CMB experiment to measure detector arrays with approximately two thousand transition-edge sensor (TES) bolometers in each 150 mm detector wafer. We present the implementation and testing of the Advanced ACTPol time-division multiplexing readout architecture with a 64-row multiplexing factor. This includes testing of individual multichroic detector pixels and superconducting quantum interference device (SQUID) multiplexing chips as well as testing and optimizing of the integrated readout electronics. In particular, we describe the new automated multiplexing SQUID tuning procedure developed to select and optimize the thousands of SQUID parameters required to readout each Advanced ACTPol array. The multichroic detector pixels in each array use separate channels for each polarization and each of the two frequencies, such that four TESes must be read out per pixel. Challenges addressed include doubling the number of detectors per multiplexed readout channel compared to ACTPol and optimizing the Nyquist inductance to minimize detector and SQUID noise aliasing.

Paper Details

Date Published: 19 July 2016
PDF: 17 pages
Proc. SPIE 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII, 99141G (19 July 2016); doi: 10.1117/12.2233895
Show Author Affiliations
Shawn W. Henderson, Cornell Univ. (United States)
Jason R. Stevens, Cornell Univ. (United States)
Mandana Amiri, Univ. of British Columbia (Canada)
Jason Austermann, NIST Quantum Devices Group (United States)
James A. Beall, NIST Quantum Devices Group (United States)
Saptarshi Chaudhuri, Stanford Univ. (United States)
Hsiao-Mei Cho, SLAC National Accelerator Lab. (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, NIST Quantum Devices Group (United States)
Colin P. Fitzgerald, NIST Quantum Devices Group (United States)
Patricio A. Gallardo, Cornell Univ. (United States)
Mark Halpern, Univ. of British Columbia (Canada)
Matthew Hasselfield, The Pennsylvania State Univ. (United States)
Gene Hilton, NIST Quantum Devices Group (United States)
Shuay-Pwu Patty Ho, Princeton Univ. (United States)
Johannes Hubmayr, NIST Quantum Devices Group (United States)
Kent D. Irwin, Stanford Univ. (United States)
SLAC National Accelerator Lab. (United States)
Brian J. Koopman, Cornell Univ. (United States)
Dale Li, SLAC National Accelerator Lab. (United States)
Yaqiong Li, Princeton Univ. (United States)
Jeff McMahon, Univ. of Michigan (United States)
Federico Nati, Univ. of Pennsylvania (United States)
Michael Niemack, Cornell Univ. (United States)
Carl D. Reintsema, NIST Quantum Devices Group (United States)
Maria Salatino, Princeton Univ. (United States)
Alessandro Schillaci, Pontificia Univ. Católica de Chile (Chile)
Benjamin L. Schmitt, Univ. of Pennsylvania (United States)
Sara M. Simon, Princeton Univ. (United States)
Suzanne T. Staggs, Princeton Univ. (United States)
Eve M. Vavagiakis, Cornell Univ. (United States)
Jonathan T. Ward, Univ. of Pennsylvania (United States)

Published in SPIE Proceedings Vol. 9914:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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