THE Q/U IMAGING EXPERIMENT INSTRUMENT
THE Q/U IMAGING EXPERIMENT INSTRUMENT
复制标题
Q/U 成像实验仪
DOI:
10.1088/0004-637x/768/1/9
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Bischoff C
中科院分区:
文献类型:
--
作者:
Bischoff C
The Q/U Imaging ExperimenT (QUIET) is designed to measure polarization in the cosmic microwave background, targeting the imprint of inflationary gravitational waves at large angular scales (∼ 1). Between 2008 October and 2010 December, two independent receiver arrays were deployed sequentially on a 1.4 m side-fed Dragonian telescope. The polarimeters that form the focal planes use a compact design based on high electron mobility transistors (HEMTs) that provides simultaneous measurements of the Stokes parameters Q, U, and I in a single module. The 17-element Q-band polarimeter array, with a central frequency of 43.1 GHz, has the best sensitivity (69 μKs 1/2) and the lowest instrumental systematic errors ever achieved in this band, contributing to the tensor-to-scalar ratio at r< 0.1. The 84-element W-band polarimeter array has a sensitivity of 87 μKs 1/2 at a central frequency of 94.5 GHz. It has the lowest systematic errors to date, contributing at r< 0.01. The two arrays together cover multipoles in the range ℓ∼ 25–975. These are the largest HEMT-based arrays deployed to date. This article describes the design, calibration, performance, and sources of systematic error of the instrument.
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DOI:
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发表时间:
2009
期刊:
影响因子:
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作者:
Y. Takahashi;P. Ade;D. Barkats;D. Barkats;J. Battle;E. Bierman;J. Bock;J. Bock;H. Chiang;H. Chiang;C. Dowell;L. Duband;E. Hivon;W. Holzapfel;V. Hristov;W. Jones;W. Jones;B. Keating;J. Kovac;C. Kuo;A. Lange;E. Leitch;P. Mason;T. Matsumura;H. Nguyen;N. Ponthieu;C. Pryke;S. Richter;G. Rocha;G. Rocha;K. W. Yoon
通讯作者:
K. W. Yoon
DOI:
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发表时间:
2010
期刊:
Astronomical Telescopes + Instrumentation
影响因子:
--
作者:
K. Cleary
通讯作者:
K. Cleary
DOI:
--
发表时间:
2001
期刊:
影响因子:
--
作者:
B. Keating;C. O’Dell;J. Gundersen;L. Piccirillo;N. Stebor;P. Timbie
通讯作者:
P. Timbie
DOI:
10.1086/172414
发表时间:
1993-03
期刊:
The Astrophysical Journal
影响因子:
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作者:
P. Meinhold;A. Chingcuanco;J. Gundersen;Jeffrey Schuster;M. Seiffert;P. Lubin;D. Morris;T. Villela
通讯作者:
P. Meinhold;A. Chingcuanco;J. Gundersen;Jeffrey Schuster;M. Seiffert;P. Lubin;D. Morris;T. Villela
DOI:
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发表时间:
2010
期刊:
Astronomical Telescopes + Instrumentation
影响因子:
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作者:
R. Monsalve
通讯作者:
R. Monsalve