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Performance and on-sky optical characterization of the SPTpol instrument

George, E. M. and Lueker, M. and Shirokoff, E. and Vieira, J. D. (2012) Performance and on-sky optical characterization of the SPTpol instrument. In: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI. Proceedings of SPIE. No.8452. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 84521F. ISBN 978-0-8194-9153-4.

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In January 2012, the 10m South Pole Telescope (SPT) was equipped with a polarization-sensitive camera, SPTpol, in order to measure the polarization anisotropy of the cosmic microwave background (CMB). Measurements of the polarization of the CMB at small angular scales (~several arcminutes) can detect the gravitational lensing of the CMB by large scale structure and constrain the sum of the neutrino masses. At large angular scales (~few degrees) CMB measurements can constrain the energy scale of Inflation. SPTpol is a two-color mm-wave camera that consists of 180 polarimeters at 90 GHz and 588 polarimeters at 150 GHz, with each polarimeter consisting of a dual transition edge sensor (TES) bolometers. The full complement of 150 GHz detectors consists of 7 arrays of 84 ortho-mode transducers (OMTs) that are stripline coupled to two TES detectors per OMT, developed by the TRUCE collaboration and fabricated at NIST. Each 90 GHz pixel consists of two antenna-coupled absorbers coupled to two TES detectors, developed with Argonne National Labs. The 1536 total detectors are read out with digital frequency-domain multiplexing (DfMUX). The SPTpol deployment represents the first on-sky tests of both of these detector technologies, and is one of the first deployed instruments using DfMUX readout technology. We present the details of the design, commissioning, deployment, on-sky optical characterization and detector performance of the complete SPTpol focal plane.

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Additional Information:© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE). Work at the University of Colorado is supported by the NSF through grant AST-0705302. Work at NIST is supported by the NIST Innovations in Measurement Science program. The McGill authors acknowledge funding from the Natural Sciences and Engineering Research Council, Canadian Institute for Advanced Research, and Canada Research Chairs program. MD acknowledges support from an Alfred P. Sloan Research Fellowship. Work at the University of Chicago is supported by grants from the NSF (awards ANT-0638937 and PHY-0114422), the Kavli Foundation, and the Gordon and Betty Moore Foundation. Work at Argonne National Lab is supported by UChicago Argonne, LLC, Operator of Argonne National Laboratory ("Argonne"). Argonne, a U.S. Department of Energy Office of Science Laboratory, is operated under Contract No. DE-AC02-06CH11357. We acknowledge support from the Argonne Center for Nanoscale Materials.
Funding AgencyGrant Number
National Institute of Standards and Technology (NIST)UNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Canadian Institute for Advanced Research (CIFAR)UNSPECIFIED
Canada Research Chairs ProgramUNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Kavli FoundationUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Department of Energy (DOE)DE-AC02-06CH11357
Argonne Center for Nanoscale MaterialsUNSPECIFIED
Subject Keywords:Cosmology, TES, detectors, CMB, SPT
Series Name:Proceedings of SPIE
Issue or Number:8452
Record Number:CaltechAUTHORS:20161026-141054723
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Official Citation:E. M. George ; P. Ade ; K. A. Aird ; J. E. Austermann ; J. A. Beall ; D. Becker ; A. Bender ; B. A. Benson ; L. E. Bleem ; J. Britton ; J. E. Carlstrom ; C. L. Chang ; H. C. Chiang ; H.-M. Cho ; T. M. Crawford ; A. T. Crites ; A. Datesman ; T. de Haan ; M. A. Dobbs ; W. Everett ; A. Ewall-Wice ; N. W. Halverson ; N. Harrington ; J. W. Henning ; G. C. Hilton ; W. L. Holzapfel ; S. Hoover ; N. Huang ; J. Hubmayr ; K. D. Irwin ; M. Karfunkle ; R. Keisler ; J. Kennedy ; A. T. Lee ; E. Leitch ; D. Li ; M. Lueker ; D. P. Marrone ; J. J. McMahon ; J. Mehl ; S. S. Meyer ; J. Montgomery ; T. E. Montroy ; J. Nagy ; T. Natoli ; J. P. Nibarger ; M. D. Niemack ; V. Novosad ; S. Padin ; C. Pryke ; C. L. Reichardt ; J. E. Ruhl ; B. R. Saliwanchik ; J. T. Sayre ; K. K. Schaffer ; E. Shirokoff ; K. Story ; C. Tucker ; K. Vanderlinde ; J. D. Vieira ; G. Wang ; R. Williamson ; V. Yefremenko ; K. W. Yoon ; E. Young; Performance and on-sky optical characterization of the SPTpol instrument. Proc. SPIE 8452, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI, 84521F (September 24, 2012); doi:10.1117/12.925586.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:71508
Deposited By: Ruth Sustaita
Deposited On:27 Oct 2016 16:55
Last Modified:03 Oct 2019 16:08

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