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Spider optimization: probing the systematics of a large-scale B-mode experiment

MacTavish, C. J. and Ade, P. A. R. and Battistelli, E. S. and Benton, S. and Bihary, R. and Bock, J. J. and Bond, J. R. and Brevik, J. and Bryan, S. and Contaldi, C. R. and Crill, B. P. and Doré, O. and Fissel, L. and Golwala, S. R. and Halpern, M. and Hilton, G. and Holmes, W. and Hristov, V. V. and Irwin, K. and Jones, W. C. and Kuo, C. L. and Lange, A. E. and Lawrie, C. and Martin, T. G. and Mason, P. and Montroy, T. E. and Netterfield, C. B. and Riley, D. and Ruhl, J. E. and Runyan, M. and Trangsrud, A. and Tucker, C. and Turner, A. and Viero, M. and Wiebe, D. (2008) Spider optimization: probing the systematics of a large-scale B-mode experiment. Astrophysical Journal, 689 (2). pp. 655-665. ISSN 0004-637X.

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Spider is a long-duration, balloon-borne polarimeter designed to measure large-scale cosmic microwave background (CMB) polarization with very high sensitivity and control of systematics. The instrument will map over half the sky with degree angular resolution in the I, Q, and U Stokes parameters in four frequency bands from 96 to 275 GHz. Spider's ultimate goal is to detect the primordial gravity-wave signal imprinted on the CMB B-mode polarization. One of the challenges in achieving this goal is the minimization of the contamination of B-modes by systematic effects. This paper explores a number of instrument systematics and observing strategies in order to optimize B-mode sensitivity. This is done by injecting realistic-amplitude, time-varying systematics into a set of simulated time streams. Tests of the impact of detector noise characteristics, pointing jitter, payload pendulations, polarization angle offsets, beam systematics, and receiver gain drifts are shown. Spider's default observing strategy is to spin continuously in azimuth, with polarization modulation achieved by either a rapidly spinning half-wave plate or a rapidly spinning gondola and a slowly stepped half-wave plate. Although the latter is more susceptible to systematics, the results shown here indicate that either mode of operation can be used by Spider.

Item Type:Article
Related URLs:
URLURL TypeDescription
Ade, P. A. R.0000-0002-5127-0401
Bock, J. J.0000-0002-5710-5212
Crill, B. P.0000-0002-4650-8518
Doré, O.0000-0002-5009-7563
Fissel, L.0000-0002-3242-8154
Golwala, S. R.0000-0002-1098-7174
Additional Information:© 2008 The American Astronomical Society. Received 2007 October 1, accepted for publication 2008 July 28. This research used the McKenzie cluster at CITA, funded by the Canada Foundation for Innovation. Some of the results in this paper have been derived using the HEALPix package (Gorski et al. 2005), as well as the FFTW package (Frigo & Johnson 2005). We thank the anonymous referee for helpful comments and corrections.
Funding AgencyGrant Number
Canada Foundation for InnovationUNSPECIFIED
Subject Keywords:cosmic microwave background; gravitational waves; methods: data analysis; polarization
Issue or Number:2
Record Number:CaltechAUTHORS:20090524-204222732
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:14292
Deposited By: Joy Painter
Deposited On:02 Jun 2009 23:33
Last Modified:03 Oct 2019 00:48

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