Speaker
Yusuke Sakakibara
(University of Tokyo)
Description
In a Japanese interferometric cryogenic gravitational-wave detector, KAGRA, its mirrors will be cooled down in order to reduce thermal noise. Only cryostats containing the mirrors will be cooled down while beam ducts and vibration isolation system are kept at room temperature. Thus, thermal radiation through holes on radiation shield is problematic. To reduce this thermal radiation, pipe-shaped radiation shields called duct shields will be installed. Here, we will report calculation and measurement of thermal radiation through the actual KAGRA duct shield.
Author
Yusuke Sakakibara
(University of Tokyo)
Co-authors
Dr
Chihiro Tokoku
(Institute for Cosmic Ray Research(ICRR), University of Tokyo)
Prof.
Kazuaki Kuroda
(Institute for Cosmic Ray Research(ICRR), University of Tokyo)
Dr
Kazuhiro Yamamoto
(Institute for Cosmic Ray Research(ICRR), University of Tokyo)
Nobuhiro Kimura
(High Energy Accelerator Research Organization (KEK))
Dr
Ryutaro Takahashi
(National Astronomical Observatory of Japan (NAOJ))
Dr
Tomotada Akutsu
(National Astronomical Observatory of Japan (NAOJ))
Prof.
Toshikazu Suzuki
(High Energy Accelerator Research Organization (KEK))
Prof.
Yoshio Saito
(High Energy Accelerator Research Organization(KEK))
Mr
shigeaki koike
(KEK)
