Laboratory calibration system for CMB polarization detectors

M. Hasegawa, O. Tajima, Y. Chinone, M. Hazumi, K. Ishidoshiro, M. Nagai

研究成果: Article査読

抄録

We present a novel system to calibrate millimeter-wave polarimeters for CMB polarization measurements. This technique is an extension of the conventional metal mirror rotation approach, however it employs cryogenically-cooled blackbody absorbers. The primary advantage of this system is that it can generate a slightly polarized signal (∼100 mK) in the laboratory; this is at a similar level to that measured by ground-based CMB polarization experiments observing a ∼10 K sky. It is important to reproduce the observing condition in the laboratory for reliable characterization of polarimeters before deployment. In this paper, we present the design and principle of the system, and demonstrate its use with a coherent-type polarimeter used for QUIET. This technique can also be applied to incoherent-type polarimeters and it is very promising for the nextgeneration CMB polarization experiments.

本文言語English
ページ(範囲)892-897
ページ数6
ジャーナルJournal of Low Temperature Physics
167
5-6
DOI
出版ステータスPublished - 2012 6
外部発表はい

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 材料科学(全般)
  • 凝縮系物理学

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