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Optical Characterization of the Keck Array Polarimeter at the South Pole Halpern, Mark
Abstract
The Keck Array (SPUD) is a set of microwave polarimeters that observes from the South Pole at degree angular scales in search of a signature of Ination imprinted as B-mode polarization in the Cosmic Microwave Background (CMB). The first three Keck Array receivers were deployed during the 2010-2011 Austral summer, followed by two new receivers in the 2011-2012 summer season, completing the full five-receiver array. All five receivers are currently observing at 150 GHz. The Keck Array employs the field-proven BICEP/BICEP2 strategy of using small, cold, on-axis refractive optics, providing excellent control of systematics while maintaining a large field of view. This design allows for full characterization of far-field optical performance using microwave sources on the ground. We describe our efforts to characterize the main beam shape and beam shape mismatch between co-located orthogonally-polarized detector pairs, and discuss the implications of measured differential beam parameters on temperature to polarization leakage in CMB analysis. 2012 SPIE. Copyright 2012 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Item Metadata
Title |
Optical Characterization of the Keck Array Polarimeter at the South Pole
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Creator | |
Publisher |
Society of Photo-Optical Instrumentation Engineers (SPIE)
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Date Issued |
2012-09-24
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Description |
The Keck Array (SPUD) is a set of microwave polarimeters that observes from the South Pole at degree angular scales in search of a signature of Ination imprinted as B-mode polarization in the Cosmic Microwave Background (CMB). The first three Keck Array receivers were deployed during the 2010-2011 Austral summer, followed by two new receivers in the 2011-2012 summer season, completing the full five-receiver array. All five receivers are currently observing at 150 GHz. The Keck Array employs the field-proven BICEP/BICEP2 strategy of using small, cold, on-axis refractive optics, providing excellent control of systematics while maintaining a large field of view. This design allows for full characterization of far-field optical performance using microwave sources on the ground. We describe our efforts to characterize the main beam shape and beam shape mismatch between co-located orthogonally-polarized detector pairs, and discuss the implications of measured differential beam parameters on temperature to polarization leakage in CMB analysis. 2012 SPIE.
Copyright 2012 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
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Genre | |
Type | |
Language |
eng
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Date Available |
2014-03-10
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0107625
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URI | |
Affiliation | |
Citation |
Vieregg, A.G. ; Ade, P.A.R. ; Aikin, R. ; Bischoff, C. ; Bock, J.J. ; Bonetti, J.A. ; Bradford, K.J. ; Brevik, J.A. ; Dowell, C.D. ; Duband, L. ; Filippini, J.P. ; Fliescher, S. ; Golwala, S.R. ; Gordon, M.S. ; Halpern, M. ; Hilton, G. ; Hristov, V.V. ; Irwin, K. ; Kernasovskiy, S. ; Kovac, J.M. ; Kuo, C.L. ; Leitch, E. ; Lueker, M. ; Montroy, T. ; Netterfield, C.B. ; Nguyen, H.T. ; O'Brient, R. ; Ogburn IV, R.W. ; Pryke, C. ; Ruhl, J.E. ; Runyan, M. ; Schwarz, R. ; Sheehy, C. ; Staniszewski, Z. ; Sudiwala, R. ; Teply, G. ; Tolan, J. ; Turner, A.D. ; Wilson, P. ; Wong, C.L. Optical Characterization of the Keck Array Polarimeter at the South Pole. Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI edited by Wayne S. Holland, Jonas Zmuidzinas, Proceedings of SPIE 8452, 845226 2012
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Publisher DOI |
10.1117/12.926639
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Peer Review Status |
Reviewed
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Scholarly Level |
Faculty
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Copyright Holder |
Halpern, Mark
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Rights URI | |
Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International