Characterization of the Atacama B-Mode Search

被引：4

作者：

Simon, S. M. ^{[1
]}

Raghunathan, S. ^{[2
]}

Appel, J. W. ^{[3
]}

Becker, D. T. ^{[4
]}

Campusano, L. E. ^{[2
]}

Cho, H. M. ^{[4
]}

Essinger-Hileman, T. ^{[3
]}

Ho, S. P. ^{[1
]}

Irwin, K. D. ^{[4
,5
]}

Jarosik, N. ^{[1
]}

Kusaka, A. ^{[1
]}

Niemack, M. D. ^{[6
]}

Nixon, G. W. ^{[1
]}

Nolta, M. R. ^{[7
]}

Page, L. A. ^{[1
]}

Palma, G. A. ^{[8
]}

Parker, L. P. ^{[1
]}

Sievers, J. L. ^{[9
]}

Staggs, S. T. ^{[1
]}

Visnjic, K. ^{[1
]}

机构：

[1] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

[2] Univ Chile, Dept Astron, FCFM, Santiago, Chile

[3] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[4] NIST, Boulder, CO USA

[5] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[6] Cornell Univ, Dept Phys, Ithaca, NY 14853 USA

[7] Univ Toronto, Canadian Inst Theoret Astrophys, Toronto, ON M5S 1A1, Canada

[8] Univ Chile, Dept Fis, FCFM, Santiago, Chile

[9] Univ KwaZulu Natal, Sch Math Stat & Comp Sci, Durban, South Africa

来源：

MILLIMETER, SUBMILLIMETER, AND FAR-INFRARED DETECTORS AND INSTRUMENTATION FOR ASTRONOMY VII | 2014年 / 9153卷

关键词：

B-mode; Cosmic Microwave Background; Atacama B-mode Search; characterization; instrument; GRAVITY-WAVES; MICROWAVE;

D O I：

10.1117/12.2055576

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Atacama B-mode Search (ABS), which began observations in February of 2012, is a crossed-Dragone telescope located at an elevation of 5190 m in the Atacama Desert in Chile. ABS is searching for the B-mode polarization spectrum of the cosmic microwave background (CMB) at large angular scales from multipole moments of l approximate to 50 similar to 500, a range that includes the primordial B-mode peak from inflationary gravity waves at l approximate to 100. The ABS focal plane consists of 240 pixels sensitive to 145 GHz, each containing two transition-edge sensor bolometers coupled to orthogonal polarizations with a planar ortho-mode transducer. An ambient-temperature continuously rotating half-wave plate and 4 K optics make the ABS instrument unique. We discuss the characterization of the detector spectral responses with a Fourier transform spectrometer and demonstrate that the pointing model is adequate. We also present measurements of the beam from point sources and compare them with simulations.

引用

页数：15

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