GroundBIRD: Observing Cosmic Microwave Polarization at Large Angular Scale with Kinetic Inductance Detectors and High-Speed Rotating Telescope

S. Oguri, J. Choi, T. Damayanthi, M. Hattori, M. Hazumi, H. Ishitsuka, K. Karatsu, S. Mima, M. Minowa, T. Nagasaki, C. Otani, Y. Sekimoto, O. Tajima, N. Tomita, M. Yoshida, E. Won

研究成果: Article査読

16 被引用数 (Scopus)

抄録

Cosmic microwave background (CMB) is an important source of information about the origin of our universe. In particular, odd-parity large angular scale patterns in the CMB polarization, the primordial B-modes, are strong evidence for an inflationary universe, related to the accelerating expansion of the metric. We are developing a unique telescope, GroundBIRD, to take CMB polarization measurements. The telescope combines novel techniques: high-speed rotation scanning, cold optics, and microwave kinetic inductance detectors (MKIDs). We evaluated the response of MKIDs on the rotation stage. Method of shielding from the geo-magnetic field is established. We have also developed a receiver cryostat. We are able to maintain a sufficient cold status for observations on the optical configuration. We plan to start commissioning the system by observing CMB in Japan in 2015–2016. We will then deploy GroundBIRD in the Canary Islands for further scientific observations.

本文言語English
ページ(範囲)786-792
ページ数7
ジャーナルJournal of Low Temperature Physics
184
3-4
DOI
出版ステータスPublished - 2016 8月 1

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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