片坐宏一

研究者氏名	片坐宏一
	カタザヒロカズ
URL
所属	国立研究開発法人宇宙航空研究開発機構
部署	宇宙科学研究所
職名
J-Global ID	202001007925227103

論文

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Estimation of the Heat Dissipation and the Rotor Temperature of Superconducting Magnetic Bearing Below 10 K

Yuki Sakurai Tomotake Matsumura Hirokazu Kataza Shin Utsunomiya Ryo Yamamoto

IEEE Transactions on Applied Superconductivity 27(4) 1-4 2017年6月

Fabrication and Analysis of Three-Layer All-Silicon Interference Optical Filter with Sub-Wavelength Structure toward High Performance Terahertz Optics

Hironobu Makitsubo Takehiko Wada Hirokazu Kataza Makoto Mita Toyoaki Suzuki Keita Yamamoto

JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES 38(2) 206-214 2017年2月

We propose an all-silicon multi-layer interference filter composed solely of silicon with sub-wavelength structure (SWS) in order to realize high performance optical filters operating in the THz frequency region with robustness against cryogenic t...

Free-form reflective optics for mid-infrared camera and spectrometer on board SPICA

Naofumi Fujishiro Hirokazu Kataza Takehiko Wada Yuji Ikeda Itsuki Sakon Shinki Oyabu

Proceedings of SPIE - The International Society for Optical Engineering 10564 2017年

SPICA (Space Infrared Telescope for Cosmology and Astrophysics) is an astronomical mission optimized for mid- and far-infrared astronomy with a cryogenically cooled 3-m class telescope, envisioned for launch in early 2020s. Mid-infrared Camera and...

Thermal analysis of a prototype cryogenic polarization modulator for use in a space-borne CMB polarization experiment

T. Iida Y. Sakurai T. Matsumura H. Sugai H. Imada H. Kataza H. Ohsaki M. Hazumi N. Katayama R. Yamamoto S. Utsunomiya Y. Terao

ADVANCES IN CRYOGENIC ENGINEERING 278 2017年

We report a thermal analysis of a polarization modulator unit (PMU) for use in a space-borne cosmic microwave background (CMB) project. A measurement of the CMB polarization allows us to probe the physics of early universe, and that is the best me...

Vibrational characteristics of a superconducting magnetic bearing employed for a prototype polarization modulator

Yuki Sakurai Tomotake Matsumura Hajime Sugai Nobuhiko Katayama Hiroyuki Ohsaki Yutaka Terao Yusuke Terachi Hirokazu Kataza Shin Utsunomiya Ryo Yamamoto

29TH INTERNATIONAL SYMPOSIUM ON SUPERCONDUCTIVITY 871 2017年

We present the vibrational characteristics of a levitating rotor in a superconducting magnetic bearing (SMB) system operating at below 10 K. We develop a polarization modulator that requires a continuously rotating optical element, called half-wav...