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The Primordial Inflation Polarization Explorer (PIPER)

Holland, Wayne S., Zmuidzinas, Jonas, Gandilo, Natalie N., Ade, Peter A. R., Benford, Dominic, Bennett, Charles L., Chuss, David T., Dotson, Jessie L., Eimer, Joseph R., Fixsen, Dale J., Halpern, Mark, Hilton, Gene, Hinshaw, Gary F., Irwin, Kent, Jhabvala, Christine, Kimball, Mark, Kogut, Alan, Lowe, Luke, McMahon, Jeff J., Miller, Timothy M., Mirel, Paul, Moseley, S. H., Pawlyk, Samuel, Rodriguez, Samelys, Sharp, Elmer, Shirron, Peter, Staguhn, Johannes G., Sullivan, Dan F., Switzer, Eric R., Taraschi, Peter, Tucker, Carole and Wollack, Edward J. 2016. The Primordial Inflation Polarization Explorer (PIPER). Presented at: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII, Edinburgh, United Kingdom, 26 June 2016. Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII. Society of Photo-optical Instrumentation Engineers, 99141J. 10.1117/12.2231109

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The Primordial Inflation Polarization ExploreR (PIPER) is a balloon-borne telescope designed to measure the polarization of the Cosmic Microwave Background on large angular scales. PIPER will map 85% of the sky at 200, 270, 350, and 600 GHz over a series of 8 conventional balloon flights from the northern and southern hemispheres. The first science flight will use two 32 × 40 arrays of backshort-under-grid transition edge sensors, multiplexed in the time domain, and maintained at 100 mK by a Continuous Adiabatic Demagnetization Refrigerator. Front- end cryogenic Variable-delay Polarization Modulators provide systematic control by rotating linear to circular polarization at 3 Hz. Twin telescopes allow PIPER to measure Stokes I, Q, U , and V simultaneously. The telescope is maintained at 1.5 K in an LHe bucket dewar. Cold optics and the lack of a warm window permit sensitivity at the sky-background limit. The ultimate science target is a limit on the tensor-to-scalar ratio of r ∼ 0.007, from the reionization bump to l ∼ 300. PIPER’s first flight will be from the Northern hemisphere, and overlap with the CLASS survey at lower frequencies. We describe the current status of the PIPER instrument.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: Society of Photo-optical Instrumentation Engineers
ISSN: 0277-786X
Date of First Compliant Deposit: 7 July 2017
Date of Acceptance: 19 July 2016
Last Modified: 14 Jul 2017 10:38

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