SPIDER: a balloon-borne CMB polarimeter for large angular scales
Filippini, J. P. · Ade, P. A. R. · Amiri, M. · Benton, S. J. · Bihary, R. · Bock, J. J. · Bond, J. R. · Bonetti, J. A. · Bryan, S. A. · Burger, B. · Chiang, H. C. · Contaldi, C. R. · Crill, B. P. · Doré, O. · Farhang, M. · Fissel, L. M. · Gandilo, N. N. · Golwala, S. R. · Gudmundsson, J. E. · Halpern, M. · Hasselfield, M. · Hilton, G. · Holmes, W. · Hristov, V. V. · Irwin, K. D. · Jones, W. C. · Kuo, C. L. · MacTavish, C. J. · Mason, P. V. · Montroy, T. E. · Morford, T. A. · Netterfield, C. B. · O'Dea, D. T. · Rahlin, A. S. · Reintsema, C. D. · Ruhl, J. E. · Runyan, M. C. · Schenker, M. A. · Shariff, J. A. · Soler, J. D. · Trangsrud, A. · Tucker, C. · Tucker, R. S. · Turner, A. D.
الأصل · EN
We describe SPIDER, a balloon-borne instrument to map the polarization of the millimeter-wave sky with degree angular resolution. Spider consists of six monochromatic refracting telescopes, each illuminating a focal plane of large-format antenna-coupled bolometer arrays. A total of 2,624 superconducting transition-edge sensors are distributed among three observing bands centered at 90, 150, and 280 GHz. A cold half-wave plate at the aperture of each telescope modulates the polarization of incoming light to control systematics. Spider's first flight will be a 20-30-day Antarctic balloon campaign in December 2011. This flight will map 8% of the sky to achieve unprecedented sensitivity to the polarization signature of the gravitational wave background predicted by inflationary cosmology. The Spider mission will also serve as a proving ground for these detector technologies in preparation for a future satellite mission.
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