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SPTpol: an instrument for CMB polarization measurements with the South Pole Telescope

Austermann, J. E. and Lueker, M. and Shirokoff, E. and Vieira, J. D. (2012) SPTpol: an instrument for CMB polarization measurements with the South Pole Telescope. 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. 84521E. ISBN 978-0-8194-9153-4.

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SPTpol is a dual-frequency polarization-sensitive camera that was deployed on the 10-meter South Pole Telescope in January 2012. SPTpol will measure the polarization anisotropy of the cosmic microwave background (CMB) on angular scales spanning an arcminute to several degrees. The polarization sensitivity of SPTpol will enable a detection of the CMB “B-mode” polarization from the detection of the gravitational lensing of the CMB by large scale structure, and a detection or improved upper limit on a primordial signal due to inationary gravity waves. The two measurements can be used to constrain the sum of the neutrino masses and the energy scale of ination. These science goals can be achieved through the polarization sensitivity of the SPTpol camera and careful control of systematics. The SPTpol camera consists of 768 pixels, each containing two transition-edge sensor (TES) bolometers coupled to orthogonal polarizations, and a total of 1536 bolometers. The pixels are sensitive to light in one of two frequency bands centered at 90 and 150 GHz, with 180 pixels at 90 GHz and 588 pixels at 150 GHz. The SPTpol design has several features designed to control polarization systematics, including: singlemoded feedhorns with low cross-polarization, bolometer pairs well-matched to dfference atmospheric signals, an improved ground shield design based on far-sidelobe measurements of the SPT, and a small beam to reduce temperature to polarization leakage. We present an overview of the SPTpol instrument design, project status, and science projections.

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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, bolometer, millimeter, polarimetry, instrumentation
Series Name:Proceedings of SPIE
Issue or Number:8452
Record Number:CaltechAUTHORS:20161025-122851864
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Official Citation:J. E. Austermann ; K. A. Aird ; 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 ; E. M. George ; N. W. Halverson ; N. Harrington ; J. W. Henning ; G. C. Hilton ; G. P. Holder ; W. L. Holzapfel ; S. Hoover ; N. Huang ; J. Hubmayr ; K. D. Irwin ; R. Keisler ; J. Kennedy ; L. Knox ; A. T. Lee ; E. Leitch ; D. Li ; M. Lueker ; D. P. Marrone ; J. J. McMahon ; J. Mehl ; S. S. Meyer ; T. E. Montroy ; 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 ; A. A. Stark ; K. Story ; K. Vanderlinde ; J. D. Vieira ; G. Wang ; R. Williamson ; V. Yefremenko ; K. W. Yoon ; O. Zahn; SPTpol: an instrument for CMB polarization measurements with the South Pole Telescope. Proc. SPIE 8452, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI, 84521E (September 27, 2012); doi:10.1117/12.927286.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:71455
Deposited By: Ruth Sustaita
Deposited On:25 Oct 2016 20:20
Last Modified:03 Oct 2019 16:07

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