The POLARBEAR experiment
The POLARBEAR experiment
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北极熊实验
DOI：
10.1117/12.926354
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Z. D. Kermish et al.
中科院分区：
文献类型：
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作者：
三谷貴志、寄田浩平;他;Z. D. Kermish et al.
我们介绍了 POLARBEAR 实验的设计和表征。 POLARBEAR 将测量宇宙微波背景 (CMB) 的偏振，角度范围从实验的 3.5 英寸光束尺寸到几度。该实验采用了由 1,274 个天线耦合、偏振敏感的 TES 测辐射热计组成的独特焦平面，冷却至 250 毫开尔文。利用该焦平面以及对系统误差的严格控制，POLARBEAR 能够灵敏地检测由于引力透镜效应而产生的预期小尺度 B 模式信号，并搜索来自暴胀引力波的大尺度 B 模式信号。 POLARBEAR 于 2010 年在加利福尼亚州因约山脉组装并进行工程运行，并于 2011 年底部署到智利的阿塔卡马沙漠。介绍了该仪器的概述以及智利观测的表征结果。
We present the design and characterization of the POLARBEAR experiment. POLARBEAR will measure the polarization of the cosmic microwave background (CMB) on angular scales ranging from the experiment’s 3.5’ beam size to several degrees. The experiment utilizes a unique focal plane of 1,274 antenna-coupled, polarization sensitive TES bolometers cooled to 250 milliKelvin. Employing this focal plane along with stringent control over systematic errors, POLARBEAR has the sensitivity to detect the expected small scale B-mode signal due to gravitational lensing and search for the large scale B-mode signal from inflationary gravitational waves. POLARBEAR was assembled for an engineering run in the Inyo Mountains of California in 2010 and was deployed in late 2011 to the Atacama Desert in Chile. An overview of the instrument is presented along with characterization results from observations in Chile.