27 July 2016 GroundBIRD: observations of CMB polarization with fast scan modulation and MKIDs
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Abstract
Polarized patterns in the cosmic microwave background (CMB) radiation contains rich knowledge for early stage of the universe. In particular their odd-parity patterns at large angular scale (> 1°), primordial B-modes, are smoking-gun evidence for the cosmic inflation. The GroundBIRD experiment aims to detect these B-modes with a ground-based apparatus that includes several novel devices: a high-speed rotational scan system, cold optics, and microwave kinetic inductance detectors (MKIDs). We plan to start observations in the Canary Islands in 2017. In this paper, we present the status of the development of our instruments. We established an environment that allows operation of our MKIDs in an optical configuration, in which the MKIDs observe radiations from the outside of the telescope aperture. We have also constructed MKID prototypes, and we are testing them in the optical configuration.
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Shugo Oguri, Shugo Oguri, Jihoon Choi, Jihoon Choi, Thushara Damayanthi, Thushara Damayanthi, Makoto Hattori, Makoto Hattori, Masashi Hazumi, Masashi Hazumi, Hikaru Ishitsuka, Hikaru Ishitsuka, Kenji Kiuchi, Kenji Kiuchi, Ryo Koyano, Ryo Koyano, Hiroki Kutsuma, Hiroki Kutsuma, Kyungmin Lee, Kyungmin Lee, Satoru Mima, Satoru Mima, Makoto Minowa, Makoto Minowa, Makoto Nagai, Makoto Nagai, Taketo Nagasaki, Taketo Nagasaki, Chiko Otani, Chiko Otani, Yutaro Sekimoto, Yutaro Sekimoto, Munehisa Semoto, Munehisa Semoto, Jun’ya Suzuki, Jun’ya Suzuki, Tohru Taino, Tohru Taino, Osamu Tajima, Osamu Tajima, Nozomu Tomita, Nozomu Tomita, Eunil Won, Eunil Won, Tomohisa Uchida, Tomohisa Uchida, Mitsuhiro Yoshida, Mitsuhiro Yoshida, "GroundBIRD: observations of CMB polarization with fast scan modulation and MKIDs", Proc. SPIE 9906, Ground-based and Airborne Telescopes VI, 99063L (27 July 2016); doi: 10.1117/12.2231672; https://doi.org/10.1117/12.2231672
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