Author: "Hiroyuki Sugita" - Searchworks@Jio Institute Digital Library Search Results

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99 results on '"Hiroyuki Sugita"'

1. Cooling performance of Joule Thomson coolers with straight heat exchangers for space science missions

Author: Keisuke Shinozaki, Yoichi Sato, Haruka Fukuoka, Chihiro Tokoku, Takao Nakagawa, Hiroyuki Sugita, Shoji Tsunematsu, Kenichi Kanao, and Katsuhiro Narasaki
Subjects: General Physics and Astronomy, General Materials Science
Published: 2022
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2. Thermal Property Measurements of Al-Alloy for Space Cryogenic Missions

Author: Keisuke Shinozaki, Tadahito Mizutani, Takenori Fujii, Takashi Onaka, Takao Nakagawa, and Hiroyuki Sugita
Abstract: In space cryogenic missions, the thermophysical properties of materials must be studied and measured to establish a highly reliable cooling chain. An Al-alloy is a primary material in cryogenic thermal structural designs and is particularly used for providing high thermal conductance of thermal shields and thermal straps. We measured low-temperature properties (the thermal conductivity and the electrical resistivity) of several Al-alloys and found that A6063 had a lower thermal conductivity than that reported previously. We also found that the Al-alloy ST-60, which has equivalent thermal conductivity as pure aluminum, has higher thermal conductivity than A6061 and A6063, and the material is a good candidate for the space cryogenic design at the temperature range between 4K and 300K. These results are critical for the thermal study of upcoming next-generation space astronomy missions, such as LiteBIRD, SPICA and ATHENA.
Published: 2022
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3. Mechanical cooler system for the infrared space mission SPICA

Author: Seiji Yoshida, Hiroyuki Sugita, Keisuke Shinozaki, Takao Nakagawa, Kenichiro Sawada, C. Tokoku, Yoichi Sato, Hiroyuki Ogawa, Shoji Tsunematsu, Hiroshi Shibai, Kenichi Kanao, Masaru Saijo, Hideo Matsuhara, Katsuhiro Narasaki, Akinobu Okabayashi, and Tadahito Mizutani
Subjects: Physics, Stirling engine, business.industry, Infrared telescope, Joule–Thomson effect, Astrophysics::Instrumentation and Methods for Astrophysics, Lagrangian point, Spica, Radiant cooling, law.invention, Telescope, symbols.namesake, law, symbols, Water cooling, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Aerospace engineering, business, Astrophysics::Galaxy Astrophysics
Abstract: The Space Infrared Telescope for Cosmology and Astrophysics (SPICA) mission is to be launched into orbit around the second Lagrangian point (L2) in the Sun-Earth system. Taking advantage of the thermal environment in L2, a 2.5m-class large IR telescope is cooled below 8K in combination with effective radiant cooling and a mechanical cooling system. SPICA adopts a cryogen-free system to prevent the mission operation lifetime being limited by the amount of cryogen as a refrigerant. Currently, the mechanical cooler system with the feasible solution giving a proper margin is proposed. As a baseline design, 4K / 1K-class Joule-Thomson coolers are used to cool the telescope and thermal interface for Focal Plane Instruments (FPIs). Additionally, two sets of double stage stirling coolers (2STs) are used to cool the telescope shield. In this design, nominal operation of FPIs can be kept when one mechanical cooler is in failure. In this paper, current baseline configuration of the mechanical cooler system and current status of mechanical coolers developments which need to satisfy the specific requirements of SPICA cryogenic system are presented.
Published: 2020
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4. Cryogenic system of the infrared space mission SPICA

Author: Hiroyuki Ogawa, Shinsuke Takeuchi, Yoichi Sato, Jun Matsumoto, Hideki Uchida, Tadahito Mizutani, Hiroyuki Sugita, T. Tirolien, Hidehiro Kaneda, Ken Goto, Masaru Saijo, Keisuke Shinozaki, Kenichiro Sawada, Chihiro Tokoku, Hiroshi Shibai, Hideo Matsuhara, and Takao Nakagawa
Subjects: Physics, Radiative cooling, business.industry, Astrophysics::Instrumentation and Methods for Astrophysics, Shields, Cryogenics, Spica, Cryocooler, law.invention, Telescope, Observatory, law, Radiative transfer, Astrophysics::Earth and Planetary Astrophysics, Aerospace engineering, business, Astrophysics::Galaxy Astrophysics
Abstract: We present an overview of the cryogenic system of the next-generation infrared observatory mission SPICA. One of the most critical requirements for the SPICA mission is to cool the whole science equipment, including the 2.5 m telescope, to below 8 K to reduce the thermal background and enable unprecedented sensitivity in the mid- and far-infrared region. Another requirement is to cool focal plane instruments to achieve superior sensitivity. We adopt the combination of effective radiative cooling and mechanical cryocoolers to accomplish the thermal requirements for SPICA. The radiative cooling system, which consists of a series of radiative shields, is designed to accommodate the telescope in the vertical configuration. We present thermal model analysis results that comply with the requirements to cool the telescope and focal plane instruments.
Published: 2020
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5. Vibration isolation system for cryocoolers of soft x-ray spectrometer on-board ASTRO-H (Hitomi)

Author: Hiroyuki Sugita, Shinya Yamada, Yasuo Nakamura, Kenji Minesugi, Shoji Tsunematsu, Chikara Natsukari, Kiyomi Otsuka, Taro Kawano, Susumu Yasuda, Dan McCammon, Motohide Kokubun, Kazuhisa Mitsuda, Seiji Yoshida, Makoto Sawada, Meng P. Chiao, Yoh Takei, John Basile, Atsushi Wada, Ryuichi Fujimoto, Yoichi Sato, Naoko Iwata, Mina Ogawa, Atsushi Okamoto, Paul Wilke, Katsuhiro Narasaki, Shingo Obara, Caroline A. Kilbourne, James Pontius, F. Scott Porter, Gary A. Sneiderman, Tadayuki Takahashi, Megan E. Eckart, Noriko Y. Yamasaki, Kosei Ishimura, and Kenichi Kanao
Subjects: Materials science, Physics::Instrumentation and Detectors, microcalorimeter, 01 natural sciences, 010309 optics, soft x-ray spectrometer, 0103 physical sciences, microvibration, cryocooler, Aerospace engineering, 010306 general physics, Instrumentation, Soft x ray, Spectrometer, Spacecraft, business.industry, Mechanical Engineering, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Cryocooler, vibration isolation, Electronic, Optical and Magnetic Materials, Vibration, Vibration isolation, Hitomi, Space and Planetary Science, Control and Systems Engineering, business, Frequency modulation
Abstract: 著者人数: 35名, 形態: カラー図版あり, Number of authors: 35, Physical characteristics: Original contains color illustrations, Accepted: 2018-01-22, 資料番号: PA1810022000
Published: 2018

6. Outgas analysis of mechanical cryocoolers for long lifetime

Author: Keisuke Shinozaki, Seiji Yoshida, Kenichi Kanao, Hiroyuki Sugita, Katsuhiro Narasaki, Shoji Tsunematsu, Kiyomi Otsuka, Noriko Y. Yamasaki, Kenichiro Sawada, Takao Nakagawa, Kazuhisa Mitsuda, and Yoichi Sato
Subjects: Stirling cooler, Materials science, Stirling engine, Liquid helium, Nuclear engineering, Outgas reduction, Joule–Thomson effect, General Physics and Astronomy, Cryocooler, 01 natural sciences, Long lifetime, law.invention, 010309 optics, symbols.namesake, Outgassing, Piston, law, 0103 physical sciences, Heat exchanger, Regenerative heat exchanger, symbols, Joule Thomson cooler, General Materials Science, 010306 general physics
Abstract: 著者人数: 12名, Accepted: 2017-10-01, 資料番号: SA1170240000
Published: 2017
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7. On-orbit Demonstration of Oscillating Heat Pipe with Check Valves for Space Application

Author: Masakatsu Maeda, Makiko Ando, Takurou Daimaru, Atsushi Okamoto, Kosuke Tanaka, Hiroki Nagai, and Hiroyuki Sugita
Subjects: Engineering, business.product_category, Check valve, Spacecraft, Computer simulation, business.industry, 020209 energy, Energy Engineering and Power Technology, Mechanical engineering, 02 engineering and technology, Mechanics, Space (mathematics), Industrial and Manufacturing Engineering, On-orbit experiment, Heat pipe, Flat-plate Heat Pipe (FHP), Oscillating Heat Pipe (OHP), Heat transfer, 0202 electrical engineering, electronic engineering, information engineering, Orbit (dynamics), Micro-loop heat pipe, business, SDS-4
Abstract: 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, Accepted: 2017-11-05, 資料番号: PA1810073000
Published: 2017

8. Comparison between numerical simulation and on-orbit experiment of oscillating heat pipes

Author: Kosuke Tanaka, Atsushi Okamoto, Hiroki Nagai, Makiko Ando, Takurou Daimaru, and Hiroyuki Sugita
Subjects: Fluid Flow and Transfer Processes, Physics, Computer simulation, 020209 energy, Mechanical Engineering, Experimental data, 02 engineering and technology, Mechanics, Condensed Matter Physics, Heat pipe, 020401 chemical engineering, 0202 electrical engineering, electronic engineering, information engineering, Orbit (dynamics), Astrophysics::Earth and Planetary Astrophysics, 0204 chemical engineering
Abstract: This study investigated the startup behavior of Oscillating Heat Pipes (OHPs) by comparing numerical simulation and on-orbit experimental data. Previous studies suggested that initial vapor-liquid distribution affects startup behavior. However, they provided no experimental evidence to validate this hypothesis because experimentally reproducing and specifying initial vapor-liquid distribution in OHPs is virtually impossible. Thus, a numerical approach is necessary to generate the initial vapor-liquid distribution and to understand the internal thermofluid behavior of OHPs. In this study, a one-dimensional numerical model of an OHP with check valves was first developed. Then, the model was compared with data from an on-orbit experiment. Finally, simulation of OHP startup behavior with several types of initial vapor-liquid distributions showed that OHP startup difficulty is due to localization of liquids in the cooling section.
Published: 2017
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9. LiteBIRD: A Satellite for the Studies of B-Mode Polarization and Inflation from Cosmic Background Radiation Detection

Author: Josquin Errard, Kent D. Irwin, Ingunn Kathrine Wehus, Kazunori Kohri, Kam Arnold, Atsushi Okamoto, Osamu Tajima, T. Tomida, Hirokazu Ishino, L. Montier, T. Kawasaki, M. Willer, Ryo Yamamoto, Nobuhiko Katayama, B. Thorne, Eiichiro Komatsu, Takayuki Tomaru, Benjamin Westbrook, Toshiaki Iida, Tadayasu Dotani, Yuki Inoue, T. Funaki, Chiko Otani, Bruno Maffei, L. Hayes, Charles A. Hill, F. Vansyngel, T. Nagasaki, L. Duband, Tucker Elleflot, H. Imada, Johannes Hubmayr, A. Cukierman, M. Nakajima, T. Hasebe, Paul Turin, A. Dominjon, Eric V. Linder, S. Takatori, Toshifumi Shimizu, Yuto Minami, Shin Utsunomiya, Y. Sato, Yoshinori Uzawa, D. Tanabe, J. M. Duval, F. Boulanger, Takahiro Okamura, Jo Dunkley, Hiroyuki Sugita, Masato Naruse, Julian Borrill, Makoto Hattori, Theodore Kisner, Yuji Chinone, Tom Nitta, Dale Li, Mathieu Remazeilles, K. Ganga, Hideo Ogawa, Reijo Keskitalo, Masashi Hazumi, Giampaolo Pisano, E. Taylor, S. Takakura, H. Kanai, Jun-ichi Suzuki, N. Sato, Masahiro Tsujimoto, Yutaro Sekimoto, Shin-ichiro Sakai, Kimihiro Kimura, M. Nagai, N. W. Halverson, Anna Mangilli, Seongjae Cho, M. Tristram, S. A. Kernasovskiy, Jonathan Aumont, Blake D. Sherwin, Carole Tucker, Tomotake Matsumura, Kiyotomo Ichiki, Satoru Mima, T. de Haan, T. Hamada, N. Tomita, G. Patanchon, K. Komatsu, Shuji Matsuura, J. Grain, Paul L. Richards, Norio Okada, N. Hidehira, Kazuhisa Mitsuda, Soumen Basak, Yasuhiro Yamada, Aritoki Suzuki, H. K. Eriksen, Hajime Sugai, Shogo Nakamura, Peter A. R. Ade, Alex Lazarian, T. Fujino, Y. Akiba, Gabriel M. Rebeiz, H. Nishino, Nathan Whitehorn, Martin Bucher, R. Stompor, Shingo Kashima, A. Kibayashi, Y. Kida, Noah Kurinsky, D. W. Curtis, M. Inoue, Masaya Hasegawa, Adrian T. Lee, Shugo Oguri, Y. Segawa, David Alonso, A. Ducout, Carlo Baccigalupi, U. Fuskeland, S. Beckman, Uroš Seljak, R. Nagata, J. Fischer, Mitsuhiro Yoshida, K. L. Thompson, Darcy Barron, Gene C. Hilton, Noriko Y. Yamasaki, Erminia Calabrese, Neil Goeckner-Wald, R. Takaku, Suguru Takada, M. A. Dobbs, Oliver Jeong, Toshiya Namikawa, Yuki Sakurai, Chao-Lin Kuo, Kaori Hattori, Keisuke Shinozaki, D. Meilhan, M. Maki, Makoto Sawada, D. Kaneko, T. Yamashita, S. Uozumi, Takashi Noguchi, Akito Kusaka, Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Service des Basses Températures (SBT ), Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire des Cryoréfrigérateurs et Cryogénie Spatiale (LCCS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Institut de recherche en astrophysique et planétologie (IRAP), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
Subjects: detector: cryogenics, Cosmic microwave background, Cosmic background radiation, cosmic background radiation: polarization, Lagrangian point, B-mode polarization, Cosmic inflation, Primordial gravitational wave, Quantum gravity, Satellite, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, 01 natural sciences, 010305 fluids & plasmas, law.invention, Telescope, Settore FIS/05 - Astronomia e Astrofisica, bolometer, law, 0103 physical sciences, General Materials Science, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], detector: optical, 010306 general physics, Physics, Bolometer, gravitational radiation: primordial, Astrophysics::Instrumentation and Methods for Astrophysics, Condensed Matter Physics, Polarization (waves), inflation: model, Atomic and Molecular Physics, and Optics, detector: sensitivity, modulation, Cardinal point, B-mode, angular resolution, moment: multipole, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Multipole expansion
Abstract: 著者人数: 152名(所属. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS): 羽澄, 昌史; 堂谷, 忠靖; 長谷部, 孝; 今田, 大皓; 満田, 和久; 坂井, 真一郎; 関本, 裕太郎; Tomida, T.; 辻本, 匡弘; Yamamoto, R.; 山崎, 典子), Accepted: 2019-01-18, 資料番号: SA1180402000
Published: 2019
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10. Lifetime test of the 4K Joule-Thomson cryocooler

Author: Keisuke Shinozaki, Kiyomi Ootsuka, Kenichi Kanao, Hiroyuki Sugita, Takao Nakagawa, Noriko Y. Yamasaki, Kosuke Tanaka, Shoji Tsunematsu, Kenichiro Sawada, Kazuhisa Mitsuda, Yoichi Sato, and Katsuhiro Narasaki
Subjects: 010302 applied physics, Engineering, Continuous operation, business.industry, Design specification, Joule–Thomson effect, General Physics and Astronomy, Spica, Cryocooler, 01 natural sciences, symbols.namesake, 0103 physical sciences, symbols, General Materials Science, Stirling cryocooler, Aerospace engineering, 010306 general physics, business
Abstract: The 4K Joule-Thomson (JT) cryocooler is a key cryogenic component for future astronomy missions such as ATHENA and LiteBIRD. It was originally developed for SMILES (2009) and upgraded for ASTRO-H/SXS (2016) and SPICA. The 20K two-stage Stirling cryocooler developed for AKARI (2006) was also upgraded and used as a precooler. The operational life is a critical factor in planning long-term missions. An engineering model of the 4K-JT cryocooler was built for continuous operation to verify its lifetime. Testing was done from 2010 to 2019 and successful three-year operation was demonstrated with an extended operation; this was beyond the design specification. This paper describes the overall history of the lifetime test of the 4K-JT cryocooler and an evaluation of the end-of-life cooling performance and performance changes during long-term operation.
Published: 2021
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11. Cooling capability of JT coolers during the cool-down phase for space science missions

Author: Yoichi Sato, Kazuhisa Mitsuda, Hiroyuki Sugita, Takao Nakagawa, Kenichiro Sawada, Keisuke Shinozaki, Kenichi Kanao, J. M. Duval, Noriko Y. Yamasaki, T. Prouvé, Chihiro Tokoku, Shoji Tsunematsu, Ivan Charles, Laboratoire des Cryoréfrigérateurs et Cryogénie Spatiale (LCCS), Département des Systèmes Basses Températures (DSBT ), Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA)
Subjects: 010302 applied physics, Scientific instrument, [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], business.industry, Infrared telescope, Joule–Thomson effect, Phase (waves), General Physics and Astronomy, Spica, 01 natural sciences, Heat capacity, law.invention, Telescope, symbols.namesake, law, 0103 physical sciences, [PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph], symbols, Environmental science, General Materials Science, Space Science, Aerospace engineering, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], 010306 general physics, business
Abstract: In space science missions that uses cryogen-free mechanical cooler systems to cool the low temperature telescope and detectors, a cooling time from room temperature to low temperature should be considered in the required mission life time, because of a limited cooling power of mechanical cooler. For instance, in the Space Infrared Telescope for Cosmology and Astrophysics (SPICA), the 4K-class Joule Thomson cooler (4K-JT) and the 1K-class Joule Thomson cooler (1K-JT) are being considered to cool a 2.5 m telescope and provide a 1–4 K environment for scientific instruments. The cooling capability of these JT coolers, below 20 K and even lower than 5 K, is critical for initial cooling. The 4K-JT cooling from precooling to operating temperatures under the heat input was measured and confirmed that the 4K-JT has enough cooling power to cool with these heat load. The 1K-JT cool down measurement with heater was also performed. These results enabled us to estimate the cool down time for the heat capacity provided by the telescope and scientific instruments assumed in SPICA, LiteBIRD and the ESA X-ray mission ATHENA.
Published: 2020
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12. Hitomi (ASTRO-H) X-ray Astronomy Satellite

Author: Laura Brenneman, Hironori Matsumoto, Kirk Gilmore, Takayuki Yuasa, D. Lumb, Manabu Ishida, Aurora Simionescu, Takao Nakagawa, Junichiro Katsuta, Esra Bulbul, Meng P. Chiao, Philippe Laurent, Jelle de Plaa, Hiroyuki Ogawa, Keith Arnaud, Keiji Ogi, John P. Doty, B. Ramsey, Yuzuru Tawara, C. Megan Urry, Eric D. Miller, Peter Shirron, Gregory V. Brown, Dan R. Wilkins, Hiroshi Tsunemi, Richard F. Mushotzky, Nobuyuki Kawai, Brian J. Williams, Steven W. Allen, Naoko Iyomoto, Taro Kawano, Katja Pottschmidt, Yang Soong, Tadayuki Takahashi, Yasuharu Sugawara, Ikuyuki Mitsuishi, Margherita Giustini, Greg Madejski, Tetsu Kitayama, Megumi Shidatsu, Hideyuki Mori, Łukasz Stawarz, Randall K. Smith, Satoshi Sugita, Norbert Schartel, James Pontius, Kazuhiro Nakazawa, Eugenio Ursino, Katsuhiro Hayashi, Toshio Nakano, Satoru Katsuda, Cor P. de Vries, Adam R. Foster, Masanobu Ozaki, Kenji Minesugi, Tomomi Watanabe, Yuichi Terashima, Christopher S. Reynolds, Hiroaki Sameshima, Alex Koujelev, Naohisa Anabuki, Isamu Hatsukade, Masaharu Nomachi, Yoichi Yatsu, Yasunobu Uchiyama, Steve O' Dell, Ann Hornschemeier, Akio Hoshino, Yasuo Tanaka, M. Pohl, Kyoko Matsushita, Masahiro Tsujimoto, Hideki Uchiyama, Mark O. Kimball, Arvind Parmar, Gary A. Sneiderman, Yoshiyuki Inoue, Toru Tamagawa, Yukikatsu Terada, Shinya Nakashima, Tsuneyoshi Kamae, Dmitry Khangulyan, Kiyoshi Hayashida, Rie Sato, Aya Bamba, Roger Blandford, Kazunori Ishibashi, Shinya Saito, Caroline A. Kilbourne, Toshio Murakami, Takeda Shin'ichiro, Missagh Mehdipour, Motohide Kokubun, Masachika Iwai, Dan McCammon, Michael J. DiPirro, Marshall W. Bautz, Shunji Kitamoto, Naomi Ota, Brian R. McNamara, Frits Paerels, Stéphane Paltani, Magnus Axelsson, Edgar Canavan, Nobutaka Bando, Peter J. Serlemitsos, Shu Koyama, Felix Aharonian, Matteo Guainazzi, Joseph Miko, Masayoshi Nobukawa, Thomas G. Bialas, Koji Mori, Makoto Yamauchi, Uno Shin'ichiro, Hirokazu Odaka, Toru Sasaki, Mina Ogawa, Philipp Azzarello, Atsushi Wada, Tsuyoshi Okazaki, Ken Ebisawa, Takeshi Go Tsuru, Yoshitomo Maeda, Jon M. Miller, A. L. King, Cynthia Simmons, Hirofumi Noda, Hiromitsu Takahashi, Kazuhisa Mitsuda, Carlo Ferrigno, Hiroyasu Tajima, Kazuo Makishima, Erin Kara, Fumie Akimoto, Shigeo Kawasaki, Kumi Ishikawa, Kosuke Sato, Hiroshi Nakajima, Knox S. Long, Jun Kataoka, Keisuke Shinozaki, Kazuyuki Hirose, Keisuke Tamura, Teruaki Enoto, Yoh Takei, Yoshito Haba, Shinya Yamada, Richard L. Kelley, Yoshihiro Ueda, Megan E. Eckart, Takaya Ohashi, Shin-ichiro Sakai, Kevin R. Boyce, D. Haas, Atsushi Okamoto, Kazuhiro Sakai, Ryo Nagino, Makoto Asai, Maurice A. Leutenegger, Michael Loewenstein, Daniel R. Wik, Yohko Tsuboi, Maria Chernyakova, Shiro Ueno, Koji Mukai, Hiroshi Murakami, Takeshi Nakamori, Hiroshi Tomida, Tahir Yaqoob, Norbert Werner, Paolo Coppi, Abderahmen Zoghbi, Shin Watanabe, Kosei Ishimura, Hideyo Kunieda, Candace Masters, Yusuke Nishioka, Shigeo Yamauchi, Maxim Markevitch, Yuto Ichinohe, Andrew C. Fabian, Ryuichi Fujimoto, Kenji Hamaguchi, Liyi Gu, Edward M. Cackett, Chris Done, Junko S. Hiraga, Chris Baluta, Noriko Y. Yamasaki, Maki Shida, Makoto Tashiro, Takanobu Shimada, Yasuyuki T. Tanaka, Massimiliano Galeazzi, Ilana M. Harrus, Naoko Iwata, Timothy R. Kallman, Takuya Miyazawa, Kumiko K. Nobukawa, Madoka Kawaharada, Hisamitsu Awaki, Takaaki Tanaka, Tadayasu Dotani, Goro Sato, Ciro Pinto, Hiroya Yamaguchi, Harvey Moseley, Yoshiharu Namba, Shutaro Ueda, Masayuki Itoh, Takayoshi Kohmura, Daisuke Yonetoku, Yoshitaka Ishisaki, Hans A. Krimm, Hiromi Seta, Atsumasa Yoshida, Kouichi Hagino, Yuichiro Ezoe, Samar Safi-Harb, John P. Hughes, Daniel Maier, Hajime Inoue, Lorella Angelini, Yasuko Shibano, Frederick S. Porter, Saori Konami, Takayuki Tamura, Shin Mineshige, Peter Kretschmar, Yoichi Sato, Helen Russell, Hiroyuki Uchida, Elisa Costantini, Chikara Natsukari, Housei Nagano, Jan-Willem den Herder, Francesco Tombesi, Jelle Kaastra, Daniel S. McGuinness, Masanori Ohno, Hiroyuki Sugita, Katsuji Koyama, Tsunefumi Mizuno, Theodore Muench, Shiu-Hang Lee, Poshak Gandhi, Yasushi Fukazawa, Stefan Funk, Luigi C. Gallo, Tatsuro Kosaka, Andrea Goldwurm, Ryo Iizuka, Masayuki Ohta, Kazutaka Yamaoka, Marc Audard, Makoto Sawada, Takashi Okajima, Franco Moroso, Akihiro Furuzawa, Aya Kubota, Chris Jewell, Olivier Limousin, Takayuki Hayashi, Takao Kitaguchi, Takahiro Yamada, Hiroki Akamatsu, Andrew Szymkowiak, Robert Petre, Irina Zhuravleva, Dublin Institute for Advanced Studies (DIAS), SRON Netherlands Institute for Space Research (SRON), Climate and Environmental Physics [Bern] (CEP), Physikalisches Institut [Bern], Universität Bern [Bern]-Universität Bern [Bern], Columbia Astrophysics Laboratory (CAL), Columbia University [New York], Stockholm University, Kavli Institute for Particle Astrophysics and Cosmology (KIPAC), Stanford University [Stanford], AstroParticule et Cosmologie (APC (UMR_7164)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), Stanford University, Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Universität Bern [Bern] (UNIBE)-Universität Bern [Bern] (UNIBE), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Space operations, X-ray telescope, microcalorimeter, 01 natural sciences, x-ray astronomy, 010309 optics, gamma-ray astronomy, 0103 physical sciences, 010303 astronomy & astrophysics, Instrumentation, ComputingMilieux_MISCELLANEOUS, Remote sensing, [PHYS]Physics [physics], X-ray astronomy, Spacecraft, business.industry, Mechanical Engineering, Astronomy and Astrophysics, hard x-ray, Gamma-ray astronomy, First light, Electronic, Optical and Magnetic Materials, Spacecraft system, x-ray, Space and Planetary Science, Control and Systems Engineering, gamma ray, Satellite, business, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract: 著者人数: 270名（所属. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS): 高橋, 忠幸; 国分, 紀秀; 満田, 和久; Baluta, Chris; 坂東, 信尚; 堂谷, 忠靖; 海老沢, 研; 林, 克洋; 廣瀬, 和之; 飯塚, 亮; 石田, 学; 石川, 久美; 石村, 康生; 岩井, 将親; 岩田, 直子; 河野, 太郎; 川崎, 繁男; 小山, 志勇; 前田, 良知; 峯杉, 賢治; 中川, 貴雄; 夏苅, 権; 小川, 博之; 小川, 美奈; 太田, 方之; 岡崎, 健; 尾崎, 正伸; 坂井, 真一郎; 鮫島, 寛明; 佐藤, 悟郎; 佐藤, 理江; 柴野, 靖子; 志田, 真樹; 嶋田, 貴信; Simionescu, Aurora; 菅原, 泰晴; 竹井, 洋; 田村, 隆幸; 田中, 靖郎; 田代, 信; 冨田, 洋; 辻本, 匡弘; 上田, 周太朗; 上野, 史郎; 和田, 篤始; 渡辺, 伸; 山田, 隆弘; 山崎, 典子）, Number of authors: 270 (Affiliation. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS): Takahashi, Tadayuki; Kokubun, Motohide; Mitsuda, Kazuhisa; Baluta, Chris; Bando, Nobutaka; Dotani, Tadayasu; Ebisawa, Ken; Hayashi, Katsuhiro; Hirose, Kazuyuki; Iizuka, Ryo; Ishida, Manabu; Ishikawa, Kumi; Ishimura, Kosei; Iwai, Masachika; Iwata, Naoko; Kawano, Taro; Kawasaki, Shigeo; Koyama, Shu; Maeda, Yoshitomo; Minesugi, Kenji; Nakagawa, Takao; Natsukari, Chikara; Ogawa, Hiroyuki; Ogawa, Mina; Ohta, Masayuki; Okazaki, Tsuyoshi; Ozaki, Masanobu; Sakai, Shinichiro; Sameshima, Hiroaki; Sato, Goro; Sato, Rie; Shibano, Yasuko; Shida, Maki; Shimada, Takanobu; Simionescu, Aurora; Sugawara, Yasuharu; Takei, Yoh; Tamura, Takayuki; Tanaka, Yasuo; Tashiro, Makoto; Tomida, Hiroshi; Tsujimoto, Masahiro; Ueda, Shutaro; Ueno, Shiro; Wada, Atsushi; Watanabe, Shin; Yamada, Takahiro; Yamasaki, Noriko Y.), Accepted: 2018-02-05, 資料番号: SA1170333000
Published: 2018
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13. Performance of lightweight large C/SiC mirror

Author: Masashi Miyamoto, Shin Utsunomiya, Yukari Y. Yui, Masahiro Suganuma, Hiroyuki Sugita, Takao Nakagawa, Masataka Naitoh, Haruyoshi Katayama, Masaki Kotani, Yasuji Yamamoto, Hideki Saruwatari, Yoshio Tange, Toshihiko Yamawaki, Hidehiro Kaneda, and Ken Goto
Subjects: Materials science, business.industry, Astrophysics::Instrumentation and Methods for Astrophysics, Polishing, Spica, Cryogenics, Image stitching, Primary mirror, chemistry.chemical_compound, Optics, chemistry, Homogeneity (physics), Silicon carbide, business, Surface finishing
Abstract: Very lightweight mirror will be required in the near future for both astronomical and earth science/observation missions. Silicon carbide is becoming one of the major materials applied especially to large and/or light space-borne optics, such as Herschel, GAIA, and SPICA. On the other hand, the technology of highly accurate optical measurement of large telescopes, especially in visible wavelength or cryogenic circumstances is also indispensable to realize such space-borne telescopes and hence the successful missions. We have manufactured a very lightweight Φ=800mm mirror made of carbon reinforced silicon carbide composite that can be used to evaluate the homogeneity of the mirror substrate and to master and establish the ground testing method and techniques by assembling it as the primary mirror into an optical system. All other parts of the optics model are also made of the same material as the primary mirror. The composite material was assumed to be homogeneous from the mechanical tests of samples cut out from the various areas of the 800mm mirror green-body and the cryogenic optical measurement of the mirror surface deformation of a 160mm sample mirror that is also made from the same green-body as the 800mm mirror. The circumstance and condition of the optical testing facility has been confirmed to be capable for the highly precise optical measurements of large optical systems of horizontal light axis configuration. Stitching measurement method and the algorithm for analysis of the measurement is also under study.
Published: 2017
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14. Concept Study of Optical Configurations for High-Frequency Telescope for LiteBIRD

Author: D. W. Curtis, M. Nakajima, T. Funaki, R. Takaku, Yoshinori Uzawa, Carlo Baccigalupi, Johannes Hubmayr, U. Fuskeland, Theodore Kisner, S. Beckman, Anna Mangilli, Erminia Calabrese, Neil Goeckner-Wald, Uroš Seljak, M. Nagai, N. Katayama, Jonathan Aumont, Carole Tucker, Suguru Takada, Shin Utsunomiya, Kazunori Kohri, R. Nagata, Kam Arnold, M. Bucher, A. Dominjon, N. Sato, M. A. Dobbs, Shin-ichiro Sakai, Darcy Barron, Gene C. Hilton, H. K. Eriksen, Yasuhiro Yamada, Oliver Jeong, Aritoki Suzuki, Atsushi Okamoto, Tadayasu Dotani, T. Tomida, D. Meilhan, L. Duband, S. A. Kernasovskiy, S. Takakura, S. Takatori, R. Stompor, A. Ducout, B. Thorne, Eiichiro Komatsu, Hajime Sugai, Keisuke Shinozaki, N. Tomita, J. Fischer, Yuji Chinone, C. L. Kuo, L. Montier, Akito Kusaka, Toshiaki Iida, Aaron Lee, Yuki Inoue, Makoto Sawada, Ingunn Kathrine Wehus, L. Hayes, Mitsuhiro Yoshida, K. L. Thompson, H. Nishino, Mathieu Remazeilles, Tomotake Matsumura, Shugo Oguri, K. Komatsu, Reijo Keskitalo, T. Yamashita, T. Kawasaki, Takahiro Okamura, Masashi Hazumi, Osamu Tajima, Takayuki Tomaru, G. Patanchon, M. Tristram, Giampaolo Pisano, Hirokazu Ishino, Masato Naruse, Jun-ichi Suzuki, H. M. Cho, Paul Turin, Toshiya Namikawa, Yuki Sakurai, Y. Kida, Blake D. Sherwin, J. Grain, Chiko Otani, Noriko Y. Yamasaki, N. W. Halverson, Shuji Matsuura, S. Uozumi, Takashi Noguchi, T. Nagasaki, H. Imada, M. Willer, Y. Sato, M. Inoue, J. M. Duval, Bruno Maffei, Toshifumi Shimizu, Yuto Minami, F. Boulanger, Tucker Elleflot, Charles A. Hill, Benjamin Westbrook, Shogo Nakamura, Peter A. R. Ade, Kaori Hattori, Paul L. Richards, Alex Lazarian, Y. Segawa, Julian Borrill, Ryo Yamamoto, Kiyotomo Ichiki, M. Maki, Satoru Mima, D. Tanabe, Jo Dunkley, Kazuhisa Mitsuda, Soumen Basak, Gabriel M. Rebeiz, Tom Nitta, T. de Haan, T. Hamada, H. Kanai, K. Ganga, Hideo Ogawa, D. Kaneko, A. Cukierman, Nathan Whitehorn, Eric V. Linder, Masaya Hasegawa, Josquin Errard, Kimihiro Kimura, Hiroyuki Sugita, David Alonso, T. Hasebe, Kent D. Irwin, E. Taylor, Norio Okada, N. Hidehira, Shingo Kashima, A. Kibayashi, Noah Kurinsky, T. Fujino, Y. Akiba, Makoto Hattori, Dale Li, Masahiro Tsujimoto, Yutaro Sekimoto, F. Vansyngel, Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information (CEA-LETI), Direction de Recherche Technologique (CEA) (DRT (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de recherche en astrophysique et planétologie (IRAP), Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Electronique et des Technologies de l'Information (CEA-LETI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Service des Basses Températures (SBT ), Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Laboratoire des Cryoréfrigérateurs et Cryogénie Spatiale (LCCS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7), and Université Grenoble Alpes (UGA)-Direction de Recherche Technologique (CEA) (DRT (CEA))
Subjects: Cosmic microwave background radiation, Inflation, Satellite, Telescope, Silicon, Cosmic microwave background, chemistry.chemical_element, engineering.material, 01 natural sciences, law.invention, 010309 optics, Optics, Settore FIS/05 - Astronomia e Astrofisica, Coating, law, 0103 physical sciences, General Materials Science, Sensitivity (control systems), [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, Physics, business.industry, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Lens (optics), chemistry, engineering, Reflection (physics), business, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract: 著者人数: 152名（所属. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS): 長谷部, 孝; 堂谷, 忠靖; 羽澄, 昌史; 今田, 大皓; 満田, 和久; 坂井, 真一郎; 関本, 裕太郎; Tomida, T.; 辻本, 匡弘; Yamamoto, R.; 山崎, 典子), Accepted: 2018-04-07, 資料番号: SA1180209000
Published: 2017
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15. Thermal study of payload module for the next-generation infrared space telescope SPICA in risk mitigation phase

Author: Keiji Komatsu, Keisuke Shinozaki, Toshihiro Yamawaki, Katsuhiro Narasaki, Shigeki Takai, Shoji Tsunematsu, Kenichiro Sawada, Hiroshi Murakami, Hideo Matsuhara, Tadahiro Mizutani, Makoto Takada, Yoichi Sato, Makiko Ando, Akinobu Okabayashi, Takao Nakagawa, Kenichi Kanao, and Hiroyuki Sugita
Subjects: Physics, Radiative cooling, SPICA, business.industry, Infrared telescope, Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, Spica, Radiant cooling, Cryo cooler, law.invention, Telescope, law, Water cooling, General Materials Science, Astrophysics::Earth and Planetary Astrophysics, Aerospace engineering, Infrared, business, Radiator, Astrophysics::Galaxy Astrophysics, Remote sensing, Halo orbit
Abstract: 著者人数: 17名, 資料番号: SA1004974000
Published: 2014
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16. Effect of Size on Thermal Performance of Limited Size Multilayer Insulation

Author: Yasurou Kanamori, Masahide Murakami, Hiroyuki Sugita, Shun Okazaki, and Haruo Kawasaki
Subjects: Condensed Matter::Quantum Gases, Fluid Flow and Transfer Processes, Vacuum insulated panel, Materials science, business.industry, Mechanical Engineering, Computer Science::Neural and Evolutionary Computation, Multi-layer insulation, Aerospace Engineering, Condensed Matter Physics, Dynamic insulation, Calorimeter, Thermal bridge, Heat flux, Space and Planetary Science, Thermal insulation, Heat transfer, Condensed Matter::Strongly Correlated Electrons, Composite material, business
Abstract: Multilayer insulation blankets are used in various sizes for thermal control of space systems. These multilayer insulation blankets are processed, usually by being seamed and patched. It is qualitatively understood that the thermal performance of small size multilayer insulation is more or less deteriorated. The effects of size of space use multilayer insulation blankets on thermal performance are known qualitatively, but not quantitatively. In this study, the thermal performance of limited size multilayer insulation blankets was measured by using the boil-off calorimeter method with liquid nitrogen. The temperature distribution on a rectangular multilayer insulation was also measured in order to investigate the nonuniformity of the local heat flux across the rectangular multilayer insulation. Thermal performance declines with the decrease of multilayer insulation area. This is because the local heat flux drastically increases in the hem region and the gap between the edge of blanket and base plate. Based...
Published: 2014
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17. Influence of Processing on Thermal Performance of Space Use Multilayer Insulation

Author: Yasurou Kanamori, Masahide Murakami, Shun Okazaki, Hiroyuki Sugita, and Haruo Kawasaki
Subjects: Fluid Flow and Transfer Processes, Cryostat, Vacuum insulated panel, Materials science, Spacecraft, business.industry, Mechanical Engineering, Multi-layer insulation, Aerospace Engineering, Condensed Matter Physics, Thermal conduction, Thermal conductivity, Space and Planetary Science, Thermocouple, Thermal, Composite material, business
Abstract: Most spacecrafts flown today are covered with multilayer insulation blankets as the most efficient thermal control element. This study was performed to investigate the influence of various processing methods for space use multilayer insulation on thermal performance. The latter was measured by the calorimetric method using a liquid nitrogen cryostat and it was verified that the thermal performance of the multilayer insulation blankets that were processed in the most conventional manner for space use was found to be deteriorated considerably by hem processing such as overlap, seam, and patch. An estimation of the deterioration of the thermal performance of processed multilayer insulation blankets is given in this report.
Published: 2014
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18. STUDY ON INFLUENCE OF THE VERTICAL DISPLACEMENT OF PILES ON THE EXTERNAL FORCE DISTRIBUTION OF SUPERSTRUCTURES

Author: Hiroyuki Sugita, Hisahiro Hiraishi, and Daisuke Ode
Subjects: Distribution (number theory), business.industry, Architecture, Geotechnical engineering, Building and Construction, Structural engineering, Vertical displacement, business, Geology
Published: 2014
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19. INITIAL EVALUATION OF ON-ORBIT EXPERIMENT OF FLAT-PLATE HEAT PIPE

Author: Atsushi Okamoto, Hiroyuki Sugita, and Makiko Ando
Subjects: Heat pipe, Materials science, Loop heat pipe, Micro-loop heat pipe, Thermodynamics, Mechanics, Orbit (control theory), Thermal control
Published: 2014
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20. EMBEDDED EFFECTS BY FORCED VIBRATION TESTS AND ANALYSES OF A LARGE-SCALE BUILDING MODEL ON THE ACTUAL GROUND

Author: Tetsuo Abiru, Hiroyuki Sugita, Kenji Iwamoto, Hiroya Murakami, and Yasutsugu Suzuki
Subjects: Vibration, Scale (ratio), business.industry, Architecture, Building model, Building and Construction, Structural engineering, business, Geology
Published: 2014
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21. Development Status of the Mechanical Cryocoolers for the Soft X-ray Spectrometer on board Astro-H

Author: Kazuhisa Mitsuda, Kenichi Kanao, Hiroyuki Sugita, Noriko Y. Yamasaki, Toshiyuki Nishibori, Kiyomi Ootsuka, Masahide Murakami, Ryota Sato, Ken Goto, Keisuke Shinozaki, Kenichi Kikuchi, Katsuhiro Narasaki, Yoichi Sato, Kenichiro Sawada, Yoh Takei, Shoji Tsunematsu, Takao Nakagawa, and Ryuichi Fujimoto
Subjects: Materials science, Stirling engine, Spectrometer, Liquid helium, Nuclear engineering, Joule–Thomson effect, General Physics and Astronomy, Astro-H/SXS, Cryocooler, Vibration, law.invention, symbols.namesake, Outgassing, Contamination, law, symbols, Water cooling, Double-staged Stirling cooler, Joule Thomson cooler, General Materials Science, Gas compressor, Lifetime
Abstract: 著者人数: 18名, 資料番号: SA1004976000
Published: 2014

22. Outgassing characteristics analysis of mechanical cryocooler materials

Author: Takamasa Itahashi, Keisuke Shinozaki, Kenichi Kanao, Katsuhiro Narasaki, Tomoyuki Urabe, Hiroyuki Sugita, Kenichiro Sawada, Yoichi Sato, Shoji Tsunematsu, and Kiyomi Otsuka
Subjects: Outgassing, Materials science, Nuclear engineering, Cryocooler
Published: 2019
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23. Cryogenic radiator with cavity-in-cavity structure for space missions

Author: Kohsuke Tanaka, Hiroyuki Sugita, Makiko Ando, Ikuma Nishikawa, and Keisuke Shinozaki
Subjects: Physics, business.industry, law, Aerospace engineering, business, Radiator, Space exploration, law.invention
Published: 2019
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24. Development of a new MLI for orbital cryogenic propulsion systems -thermal performance under one atmosphere to a vacuum

Author: Tomoyuki Hirai, Takeshi Miyakita, Kiyoshi Kinefuchi, Kazuya Kitamoto, Hiroyuki Sugita, and Masanori Saitoh
Subjects: Atmosphere, Materials science, business.industry, Thermal, Aerospace engineering, Propulsion, business
Published: 2019
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25. STUDY ON INFLUENCE OF THE VERTICAL DISPLACEMENT OF PILES ON RESPONSE OF SUPERSTRUCTURES

Author: Hiroyuki Sugita, Hisahiro Hiraishi, Tomofusa Akita, and Kazutaka Kanazawa
Subjects: Architecture, Geotechnical engineering, Building and Construction, Vertical displacement, Geology
Published: 2013
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26. STUDY ON EFFECT OF HINGE AT THE MIDDLE OF PILE ON EARTHQUAKE RESPONSE OF REINFORCED CONCRETE BUILDINGS

Author: Kazutaka Kanazawa, Hiroyuki Sugita, and Hisahiro Hiraishi
Subjects: Architecture, Hinge, Geotechnical engineering, Building and Construction, Reinforced concrete, Pile, Geology
Published: 2013
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27. The Astro-H high resolution soft x-ray spectrometer

Author: Kazuhisa Mitsuda, Meng P. Chiao, Mina Ogawa, Maurice A. Leutenegger, Hiromi Seta, Kevin R. Boyce, Shinya Yamada, Kazuhiro Sakai, Yoh Takei, Richard L. Kelley, Phillipp Azzarell, Atsushi Okamoto, Y. Sato, Megan E. Eckart, Takaya Ohashi, Harvey Moseley, Hiroki Akamatsu, Mark O. Kimball, Akio Hoshino, Gary A. Sneiderman, Andrew Szymkowiak, Caroline A. Kilbourne, Keisuke Shinozaki, Noriko Y. Yamasaki, Peter Shirron, Kosuke Sato, Shunji Kitamoto, Naoko Iyomoto, Yukikatsu Terada, Tom Bialas, Cor P. de Vries, Shu Koyama, Edgar Canavan, Yuichiro Ezoe, Jan-Willem den Herder, Ikuyuki Mitsuishi, Elisa Costantini, Hiroyuki Sugita, D. Haas, Hiroshi Murakami, Saori Konami, Makoto Tashiro, Masahide Murakami, Yoshitaka Ishisaki, Dan McCammon, Yoichi Yatsu, Makoto Sawada, Gregory V. Brown, Naomi Ota, Joseph Miko, Masahiro Tsujimoto, Ryuichi Fujimoto, S. Paltani, Toru Tamagawa, F. Scott Porter, Michael J. DiPirro, Kumi Ishikawa, and Hirofumi Noda
Subjects: Physics, Range (particle radiation), Spectrometer, business.industry, Liquid helium, Astrophysics::High Energy Astrophysical Phenomena, Resolution (electron density), Astrophysics::Instrumentation and Methods for Astrophysics, 01 natural sciences, Galaxy, law.invention, 010309 optics, Telescope, Optics, law, 0103 physical sciences, Orbit (dynamics), business, Spectroscopy, 010303 astronomy & astrophysics
Abstract: We present the overall design and performance of the Astro-H (Hitomi) Soft X-Ray Spectrometer (SXS). The instrument uses a 36-pixel array of x-ray microcalorimeters at the focus of a grazing-incidence x-ray mirror Soft X-Ray Telescope (SXT) for high-resolution spectroscopy of celestial x-ray sources. The instrument was designed to achieve an energy resolution better than 7 eV over the 0.3-12 keV energy range and operate for more than 3 years in orbit. The actual energy resolution of the instrument is 4-5 eV as demonstrated during extensive ground testing prior to launch and in orbit. The measured mass flow rate of the liquid helium cryogen and initial fill level at launch predict a lifetime of more than 4 years assuming steady mechanical cooler performance. Cryogen-free operation was successfully demonstrated prior to launch. The successful operation of the SXS in orbit, including the first observations of the velocity structure of the Perseus cluster of galaxies, demonstrates the viability and power of this technology as a tool for astrophysics.
Published: 2016
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28. New cryogenic system of the next-generation infrared astronomy mission SPICA

Author: Ken Goto, Keisuke Shinozaki, Hiroyuki Sugita, M. Kawada, S. Takeuchi, Takao Nakagawa, Tadahito Mizutani, Hiroyuki Ogawa, Y. Sato, Naoki Isobe, Hideo Matsuhara, Hiroshi Shibai, and Toshihiko Yamawaki
Subjects: Physics, Infrared astronomy, Radiative cooling, Physics::Instrumentation and Detectors, Cryogenic system, Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy, Cryogenics, Spica, Cryocooler, 01 natural sciences, law.invention, Telescope, symbols.namesake, law, 0103 physical sciences, symbols, Astrophysics::Earth and Planetary Astrophysics, Planck, 010306 general physics, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: We present the new design of the cryogenic system of the next-generation infrared astronomy mission SPICA under the new framework. The new design employs the V-groove design for radiators, making the best use of the Planck heritage. The new design is based on the ESA-JAXA CDF study (NG-CryoIRTel, CDF-152(A)) with a 2 m telescope, and we modified the CDF design to accommodate the 2.5 m telescope to meet the science requirements of SPICA. The basic design concept of the SPICA cryogenic system is to cool the Science Instrument Assembly (SIA, which is the combination of the telescope and focal-plane instruments) below 8K by the combination of the radiative cooling system and mechanical cryocoolers without any cryogen.
Published: 2016
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29. Mechanical cooler system for the next-generation infrared space telescope SPICA

Author: Tadahito Mizutani, Mitsunobu Kawada, Akinobu Okabayashi, Shoji Tsunematsu, Toshihiko Yamawaki, Hideo Matsuhara, Hiroshi Shibai, Katsuhiro Narasaki, Keisuke Shinozaki, Hiroyuki Sugita, Yoichi Sato, Takao Nakagawa, and Hiroyuki Ogawa
Subjects: Physics, business.industry, Infrared telescope, Astrophysics::Instrumentation and Methods for Astrophysics, Spica, Radiant cooling, Orbital mechanics, 01 natural sciences, law.invention, Telescope, Optics, Spitzer Space Telescope, law, 0103 physical sciences, Water cooling, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, 010306 general physics, business, 010303 astronomy & astrophysics, Astrophysics::Galaxy Astrophysics, Halo orbit
Abstract: The Space Infrared Telescope for Cosmology and Astrophysics (SPICA) is a pre-project of JAXA in collaboration with ESA to be launched in the 2020s. The SPICA mission is to be launched into a halo orbit around the second Lagrangian point in the Sun-Earth system, which allows us to use effective radiant cooling in combination with a mechanical cooling system in order to cool a 2.5m-class large IR telescope below 8K. Recently, a new system design in particular thermal structure of the payload module has been studied by considering the technical feasibility of a cryogenic cooled telescope within current constraints of the mission in the CDF (Concurrent Design Facility) study of ESA/ESTEC. Then, the thermal design of the mechanical cooler system, for which the Japanese side is responsible, has been examined based on the CDF study and the feasible solution giving a proper margin has been obtained. As a baseline, 4K / 1K-class Joule-Thomson coolers are used to cool the telescope and thermal interface for Focal Plane Instruments (FPIs). Additionally, two sets of double stirling coolers (2STs) are used to cool the Telescope shield. In this design, nominal operation of FPIs can be kept when one mechanical cooler is in failure.
Published: 2016
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30. Performance of the helium dewar and cryocoolers of ASTRO-H SXS

Author: Shoji Tsunematsu, Kiyomi Otsuka, Keisuke Shinozaki, Kosuke Sato, Hiroyuki Sugita, Kenichi Kanao, Kazuhisa Mitsuda, Seiji Yoshida, Meng P. Chiao, Shinya Yamada, Makoto Sawada, Masahiro Tsujimoto, Ryuichi Fujimoto, Akio Hoshino, Takaya Ohashi, Hiromi Seta, Makoto Tashiro, Yoichi Yatsu, Atsushi Okamoto, Kumi Ishikawa, Shunji Kitamoto, Yoh Takei, Richard L. Kelley, Hirofumi Noda, Yoshitaka Ishisaki, Yoichi Sato, Yuichiro Ezoe, Megan E. Eckart, Gary A. Sneiderman, Peter Shirron, Noriko Y. Yamasaki, Toru Tamagawa, F. Scott Porter, Michael J. DiPirro, Shu Koyama, Katsuhiro Narasaki, Caroline A. Kilbourne, Ikuyuki Mitsuishi, and Mikio Miyaoka
Subjects: Physics, Stirling engine, Spectrometer, Nuclear engineering, Refrigerator car, chemistry.chemical_element, Heat sink, Orbital mechanics, Cryocooler, 01 natural sciences, law.invention, Nuclear magnetic resonance, chemistry, law, 0103 physical sciences, Satellite, 010306 general physics, 010303 astronomy & astrophysics, Helium
Abstract: The Soft X-ray Spectrometer (SXS) is a cryogenic high-resolution X-ray spectrometer onboard the ASTRO-H satellite, that achieves energy resolution better than 7 eV at 6 keV, by operating the detector array at 50 mK using an adiabatic demagnetization refrigerator. The cooling chain from room temperature to the ADR heat sink is composed of 2-stage Stirling cryocoolers, a 4He Joule-Thomson cryocooler, and super uid liquid He, and is installed in a dewar. It is designed to achieve a helium lifetime of more than 3 years with a minimum of 30 liters. The satellite was launched on 2016 February 17, and the SXS worked perfectly in orbit, until March 26 when the satellite lost its function. It was demonstrated that the heat load on the He tank was about 0.7 mW, which would have satisfied the lifetime requirement. This paper describes the design, results of ground performance tests, prelaunch operations, and initial operation and performance in orbit of the flight dewar and cryocoolers.
Published: 2016
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31. In-orbit operation of the ASTRO-H SXS

Author: Shinya Yamada, Yoh Takei, Makoto Tashiro, Hiromi Seta, Kazuhisa Mitsuda, Meng P. Chiao, Kevin R. Boyce, Kosuke Sato, Akio Hoshino, Thomas G. Bialas, Gregory V. Brown, Megan E. Eckart, Shunji Kitamoto, Caroline A. Kilbourne, Masahiro Tsujimoto, Ryuichi Fujimoto, Masahide Murakami, Noriko Y. Yamasaki, D. Haas, Yuichiro Ezoe, Shu Koyama, Hiroshi Murakami, Yukikatsu Terada, Peter Shirron, Stéphane Paltani, Keisuke Shinozaki, Cor P. de Vries, Yoshitaka Ishisaki, Yoichi Yatsu, Naomi Ota, Makoto Sawada, Hirofumi Noda, Richard L. Kelley, Gary A. Sneiderman, Hiroki Akamatsu, Andrew Szymkowiak, Mina Ogawa, Elisa Costantini, Dan McCammon, Naoko Iyomoto, Hiroyuki Sugita, Jan-Willem den Herder, Frederick S. Porter, Yoichi Sato, Maurice A. Leutenegger, Toru Tamagawa, Michael J. DiPirro, Ikuyuki Mitsuishi, and Kumi Ishikawa
Subjects: Physics, Spectrometer, business.industry, Orbital mechanics, 01 natural sciences, Short life, 010309 optics, 0103 physical sciences, Satellite, Aerospace engineering, Orbit (control theory), business, 010303 astronomy & astrophysics, Remote sensing
Abstract: We summarize all the in-orbit operations of the Soft X-ray Spectrometer (SXS) onboard the ASTRO-H (Hit- omi) satellite. The satellite was launched on 2016/02/17 and the communication with the satellite ceased on 2016/03/26. The SXS was still in the commissioning phase, in which the setups were progressively changed. This article is intended to serve as a reference of the events in the orbit to properly interpret the SXS data taken during its short life time, and as a test case for planning the in-orbit operation for future micro-calorimeter missions.
Published: 2016
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32. Vibration isolation system for cryocoolers of Soft X-ray Spectrometer (SXS) onboard ASTRO-H (Hitomi)

Author: F. Scott Porter, Shinya Yamada, Katsuhiro Narasaki, Caroline A. Kilbourne, Kenichi Kanao, Yasuo Nakamura, Shingo Obara, James Pontius, Atsushi Wada, Yoichi Sato, Chikara Natsukari, Hiroyuki Sugita, Paul Wilke, Gary A. Sneiderman, Seiji Yoshida, Kazuhisa Mitsuda, Kosei Ishimura, John Basile, Meng P. Chiao, Mina Ogawa, Naoko Iwata, Susumu Yasuda, Megan E. Eckart, Motohide Kokubun, Taro Kawano, Noriko Y. Yamasaki, Makoto Sawada, Shoji Tsunematsu, Tadayuki Takahashi, Kiyomi Otsuka, Yoh Takei, Atsushi Okamoto, Richard L. Kelley, Kenji Minesugi, Dan McCammon, and Ryuichi Fujimoto
Subjects: Soft x ray, Materials science, Spacecraft, Spectrometer, Physics::Instrumentation and Detectors, business.industry, Detector, Astrophysics::Instrumentation and Methods for Astrophysics, Orbital mechanics, Cryocooler, 01 natural sciences, Nuclear magnetic resonance, Vibration isolation, Flight model, 0103 physical sciences, Aerospace engineering, 010306 general physics, business, 010303 astronomy & astrophysics
Abstract: Soft X-ray Spectrometer (SXS) onboard ASTRO-H (named Hitomi after launch) is a microcalorimeter-type spectrometer, installed in a dewar to be cooled at 50 mK. The energy resolution of the SXS engineering model suffered from micro-vibration from cryocoolers mounted on the dewar. This is mitigated for the flight model by introducing vibration isolation systems between the cryocoolers and the dewar. The detector performance of the flight model was verified before launch of the spacecraft in both ambient condition and thermal-vac condition, showing no detectable degradation in energy resolution. The in-orbit performance was also consistent with that on ground, indicating that the cryocoolers were not damaged by launch environment. The design and performance of the vibration isolation system along with the mechanism of how the micro-vibration could degrade the cryogenic detector is shown.
Published: 2016
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33. Overview of Sumitomo coolers and Dewars for space use

Author: Shoji Tsunematsu, Takao Nakagawa, Kenichi Kikuchi, Kazuhisa Mitsuda, Kenichi Kanao, Toshiyuki Nishibori, Ryota Sato, Hiroshi Murakami, Yoichi Sato, Hiroyuki Sugita, Katsuhiro Narasaki, Kiyomi Ootsuka, Akinobu Okabayashi, and Masahide Murakami
Subjects: 010302 applied physics, Engineering, Stirling engine, business.industry, Single stage, Space use, Thermodynamics, Cryocooler, 01 natural sciences, law.invention, law, 0103 physical sciences, Aerospace engineering, 010306 general physics, business, Aerospace
Abstract: Sumitomo Heavy Industries, ltd. (SHI) has been developing cooler and Dewar technology for space application with Japan Aerospace Exploration Agency. SHI has four types of coolers to cover temperature range from 1.7K to 80K or more. Those are Single stage Stirling coolers for 80K, two-stage Stirling coolers for 20K, 4K-class cooler and 1K-class cooler. 4K and 1K class coolers consist of a Joule-Thomson cooler and a two-stage Stirling as a pre-cooler. SHI also provided Dewars. In this paper, SHI’s cooler and Dewar technology are described.
Published: 2016
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34. The ASTRO-H (Hitomi) x-ray astronomy satellite

Author: Yasuharu Sugawara, Luigi C. Gallo, Manabu Ishida, Hiroya Yamaguchi, Makoto Yamauchi, Hiromitsu Takahashi, Kazuhisa Mitsuda, Eric J. Miller, Ciro Pinto, Grzegorz Madejski, Meng P. Chiao, Yoshiharu Namba, Kumiko K. Nobukawa, Goro Sato, Harvey Moseley, Takayoshi Kohmura, Mina Ogawa, Greg Brown, Kevin R. Boyce, Missagh Mehdipour, Shutaro Ueda, Satoru Katsuda, Philipp Azzarello, Shin'ichiro Uno, Atsushi Wada, Takao Kitaguchi, Knox S. Long, Yohko Tsuboi, Nobutaka Bando, Shin-ichiro Sakai, Hajime Inoue, Masayuki Itoh, Kazuyuki Hirose, Norbert Werner, Fumie Akimoto, Timothy R. Kallman, Shigeo Yamauchi, Maxim Markevitch, Yuto Ichinohe, Naohisa Anabuki, Satoshi Sugita, Yoshiyuki Inoue, Olivier Limousin, Meg Urry, Kouichi Hagino, Akio Hoshino, Kumi Ishikawa, Cor P. de Vries, Teruaki Enoto, Yasuo Tanaka, M. Pohl, Masanobu Ozaki, Kenji Minesugi, Peter Shirron, Maurice A. Leutenegger, Koji Mori, Hideki Uchiyama, Yukikatsu Terada, D. Haas, Keith A. Arnaud, Masanori Ohno, Christopher S. Reynolds, Hiromi Seta, Yusuke Nishioka, Carlo Ferrigno, Edgar Canavan, Katsuji Koyama, Daniel R. Wik, Shunji Kitamoto, Keisuke Shinozaki, Katsuhiro Hayashi, Dan McCammon, David H. Lumb, Kyoko Matsushita, Hiroyuki Uchida, John P. Hughes, Daniel Maier, Lorella Angelini, Taro Kawano, Cynthia Simmons, Shiro Ueno, Koji Mukai, Abderahmen Zoghbi, Makoto Asai, Toru Tamagawa, Rie Sato, Keisuke Tamura, Yuzuru Tawara, Łukasz Stawarz, Motohide Kokubun, Hiroshi Murakami, Hiroshi Tomida, F. Scott Porter, Hiroshi Tsunemi, Ikuyuki Mitsuishi, Michael J. DiPirro, Richard F. Mushotzky, Nobuyuki Kawai, Brian J. Williams, Richard L. Kelley, Hirokazu Odaka, Matteo Guainazzi, Kazuo Makishima, Yuichiro Ezoe, Takahiro Yamada, Hiroki Akamatsu, Andrew Szymkowiak, Philippe Laurent, James Pontius, Yasunobu Uchiyama, Tetsu Kitayama, Megumi Shidatsu, Felix Aharonian, Shigeo Kawasaki, Takanobu Shimada, Laura Brenneman, Toru Sasaki, Isamu Hatsukade, A. L. King, Takuya Miyazawa, Toshio Nakano, Atsumasa Yoshida, Robert Petre, Shinya Yamada, Stéphane Paltani, Eugenio Ursino, Adam R. Foster, Takayuki Hayashi, Shiu-Hang Lee, Toshio Murakami, Chris Done, Takeshi Nakamori, Kazuhiro Sakai, Ryo Nagino, Yuichi Terashima, Caroline A. Kilbourne, Michael Loewenstein, Shin Mineshige, Peter Kretschmar, John P. Doty, Candace Masters, Yoichi Sato, Junko S. Hiraga, Magnus Axelsson, Kenji Hamaguchi, Marshall W. Bautz, Junichiro Katsuta, Hiroaki Sameshima, Ilana M. Harrus, Thomas G. Bialas, Elisa Costantini, Daniel S. McGuinness, Yoichi Yatsu, Kazutaka Yamaoka, Naoko Iwata, Mark O. Kimball, Arvind Parmar, Yasuko Shibano, Norbert Schartel, Helen Russell, Gary A. Sneiderman, Steve Allen, Kiyoshi Hayashida, Makoto Sawada, Megan E. Eckart, Takaya Ohashi, Dmitry Khangulyan, Kosei Ishimura, Tatsuro Kosaka, Andrea Goldwurm, Takashi Okajima, Hirofumi Noda, Franco Moroso, F. B. S. Paerels, Hiroyuki Sugita, Alex Koujelev, Masaharu Nomachi, Tomomi Watanabe, Marc Audard, Tsunefumi Mizuno, Hideyo Kunieda, Keiji Ogi, Akihiro Furuzawa, Brian D. Ramsey, Masayoshi Nobukawa, Shinya Saito, Poshak Gandhi, Yasushi Fukazawa, Liyi Gu, Peter J. Serlemitsos, Noriko Y. Yamasaki, Tsuyoshi Okazaki, Takeshi Go Tsuru, Kosuke Sato, Aya Kubota, Chris Jewell, Yoshitomo Maeda, Yoshihiro Ueda, Shinya Nakashima, Irina Zhuravleva, Andrew C. Fabian, Tahir Yaqoob, Housei Nagano, Erin Kara, Brian R. McNamara, Naomi Ota, Shu Koyama, Joseph Miko, Madoka Kawaharada, Hisamitsu Awaki, Steve O'Dell, Takaaki Tanaka, Hironori Matsumoto, Tadayasu Dotani, Ken Ebisawa, Dan R. Wilkins, Hiroyasu Tajima, Yasuyuki T. Tanaka, Massimiliano Galeazzi, Chikara Natsukari, Jan-Willem den Herder, Tadayuki Takahashi, Francois Lebrun, Hiroshi Nakajima, Yoh Takei, Hideyuki Mori, Yoshito Haba, Jun Kataoka, Randall K. Smith, Atsushi Okamoto, Maria Chernyakova, Shin Watanabe, Edward M. Cackett, Shin'ichiro Takeda, Takayuki Tamura, Francesco Tombesi, Jelle Kaastra, Maki Shida, Chris Baluta, Kirk Gilmore, Aurora Simionescu, Ann Hornschemeier, Kazuhiro Nakazawa, Jelle de Plaa, Naoko Iyomoto, Atsushi Harayama, Aya Bamba, Katja Pottschmidt, Roger Blandford, Kazunori Ishibashi, Makoto Tashiro, Esra Bulbul, Yang Soong, Paolo De Coppi, Daisuke Yonetoku, Yoshitaka Ishisaki, Hans A. Krimm, Samar Safi-Harb, Masahiro Tsujimoto, Ryuichi Fujimoto, Takao Nakagawa, Hiroyuki Ogawa, Margherita Giustini, Tuneyoshi Kamae, Takayuki Yuasa, Ryo Iizuka, Masayuki Ohta, Jon M. Miller, and Theodore Muench
Subjects: Physics, X-ray astronomy, Spacecraft, business.industry, Astronomy, High resolution, First light, Gamma-ray astronomy, 01 natural sciences, Spacecraft system, Settore FIS/05 - Astronomia e Astrofisica, 0103 physical sciences, Satellite, 010306 general physics, business, 010303 astronomy & astrophysics
Abstract: The Hitomi (ASTRO-H) mission is the sixth Japanese X-ray astronomy satellite developed by a large international collaboration, including Japan, USA, Canada, and Europe. The mission aimed to provide the highest energy resolution ever achieved at E > 2 keV, using a microcalorimeter instrument, and to cover a wide energy range spanning four decades in energy from soft X-rays to gamma-rays. After a successful launch on 2016 February 17, the spacecraft lost its function on 2016 March 26, but the commissioning phase for about a month provided valuable information on the on-board instruments and the spacecraft system, including astrophysical results obtained from first light observations. The paper describes the Hitomi (ASTRO-H) mission, its capabilities, the initial operation, and the instruments/spacecraft performances confirmed during the commissioning operations for about a month.
Published: 2016

35. Lifetime Test and Heritage on Orbit of Coolers for Space Use

Author: Hiroyuki Sugita, Masahide Murakami, Youichi Sato, Kazuhisa Mitsuda, Shoji Tsunematsu, Hiroshi Murakami, Akinobu Okabayashi, Takao Nakagawa, Kiyomi Ootsuka, Ryota Sato, Masanori Kobayashi, Katsuhiro Narasaki, Kenichi Kikuchi, and Kenichi Kanao
Subjects: Kaguya, Stirling engine, Meteorology, Joule–Thomson effect, General Physics and Astronomy, Cryocooler, law.invention, symbols.namesake, Orbiter, law, International Space Station, symbols, Orbit (dynamics), Environmental science, General Materials Science, Satellite
Abstract: 著者人数: 14名, Accepted: 2012-01-04, 資料番号: SA1004214000
Published: 2012

36. Development of mechanical cryocoolers for Astro-H/SXS

Author: Masahide Murakami, Ryuichi Fujimoto, Katsuhiro Narasaki, Takao Nakagawa, Shoji Tsunematsu, Kiyomi Otsuka, Hiroyuki Sugita, Kazuhisa Mitsuda, Kenichi Kanao, and Yoichi Sato
Subjects: Physics, Stirling engine, Spectrometer, Liquid helium, Nuclear engineering, Joule–Thomson effect, Refrigerator car, General Physics and Astronomy, Thermodynamics, Cryogenics, Heat sink, Cryocooler, law.invention, symbols.namesake, law, symbols, General Materials Science
Abstract: Accepted: 2010-02-22, 資料番号: SA1002677000
Published: 2010

37. STUDY ON MODELING ERROR IN STRONG NONLINEAR AREA OF STRUCTURE IN FRAGILITY EVALUATION OF NPP BUILDINGS

Author: Naohiro Nakamura, Kenichi Moriyama, Yoshihiko Hino, Hiroyuki Sugita, Minoru Fushimi, Takuya Suzuki, Satoru Miyazaki, and Yutaka Fujita
Subjects: Engineering, Bearing (mechanical), business.industry, Response analysis, Structure (category theory), Building and Construction, Structural engineering, Nuclear reactor, Finite element method, law.invention, Nonlinear system, Fragility, law, Architecture, Geotechnical engineering, business, Lumped mass
Abstract: In this paper, the modeling error for the NPP building fragility evaluation in the strong nonlinear area of the seismic response model is investigated. In the study, the restoring characteristic model of the RC bearing wall used for the response analysis of the lumped mass model was focused. 7 parts where the nonlinear level is expected to be strong during the strong earthquake in typical nuclear reactor buildings were extracted, then seismic response analysis using the model were conducted and the fragility curves were calculated. Comparing with the results of FEM model, the modeling error (β uN) was estimated about 0.1.
Published: 2007
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38. Mechanical coolers operating below 4.5K for space application

Author: Hiroshi Murakami, Kazuhisa Mitsuda, Kenichi Kanao, Junji Inatani, Masahide Murakami, Takao Nakagawa, Shouji Tsunematsu, Katsuhiro Narasaki, and Hiroyuki Sugita
Subjects: Physics, Nuclear and High Energy Physics, business.industry, Infrared telescope, Detector, Thermodynamics, Spica, Space (mathematics), Cooling capacity, Power (physics), International Space Station, Water cooling, Aerospace engineering, business, Instrumentation
Abstract: This paper reports the 4 K- and 1 K-class mechanical coolers developed for space use. The 4 K-class cooler has been developed for Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES), which is to be operated onboard the International Space Station (ISS). The cooling capacity is 20 mW at 4.5 K, with the total input power of approximately 120 W. The 1 K-class cooler has been developed for cooling far-infrared detectors to 1.7 K in the Space Infrared Telescope for Cosmology and Astrophysics (SPICA). The cooling capacity is 10 mW at 1.7 K and the total input power to the cooler is about 180 W. A future possible cryogen-free cooling system for temperature below 0.1 K is also presented, which uses these coolers as a pre-cooler.
Published: 2006
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39. B03 Improvement of Two-stage Stirling Cooler Performance for Next Space Missions

Author: Hisashi Hirabayashi, Masayuki Hirabayashi, Shoji Tsunematsu, Hiroshi Murakami, Seiji Yoshida, Hiroyuki Sugita, Kiyomi Ootsuka, Masahide Murakami, Yoichi Sato, Katsuhiro Narasaki, Kazuhisa Mitsuda, and Takao Nakagawa
Published: 2006
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40. Experimental study on thermally actuated pressure wave generator for space cryocooler

Author: Hisayasu Kobayashi, T. Ohnishi, Wei Dai, A. Kushino, Yoichi Matsubara, and Hiroyuki Sugita
Subjects: Vibration, Resonator, Materials science, Oscillation, Amplifier, Acoustics, Regenerative heat exchanger, Thermoacoustics, General Physics and Astronomy, General Materials Science, Cryogenics, Cryocooler
Abstract: In this paper, thermally actuated pressure wave generators are studied. Solid displacers instead of long and heavy resonance tubes are used as a resonator for compactness, less vibration and small loss. First, various types of thermoacoustic engine are categorized and discussed in view of energy flow patterns at a regenerator. Next, the work amplifier with solid displacers is demonstrated with the experimental apparatus. The maximum work amplification ratio of 1.6 is obtained. Further, the pressure wave generator with self-actuated oscillation is examined. Results indicate that a progressive-wave type of thermoacoustic engine can produce the largest output of 22 W among tested cases.
Published: 2004
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41. Effects of Irradiation Conditions of Laser Beam on Deposition Rate of LaNiO3 Thin Films at Pulsed Laser Deposition

Author: Hiroyuki Sugita, Takafumi Yuki, Tomoyuki Fujishima, Takahiko Yamashita, and Hisao Matuo
Subjects: Materials science, Excimer laser, business.industry, medicine.medical_treatment, Laser pumping, Laser, law.invention, Pulsed laser deposition, X-ray laser, Optics, law, Diode-pumped solid-state laser, medicine, Irradiation, Electrical and Electronic Engineering, Thin film, business
Abstract: To investigate effects of irradiation conditions of the laser beam on films prepared at the pulsed laser deposition (PLD) method, thin films of LaNiO3 were prepared on quartz substrates under different irradiation conditions of the laser beam with the PLD method by using different lasers. The XeCl excimer laser or the Nd:YAG laser was used as a source of the laser beam. The spot size, the energy density and the energy of the laser beam at a target surface were changed as the irradiation conditions of the laser beam. The deposition rate and the surface morphologies of the films prepared on the substrates were estimated. As a result, it was found that the deposition rates of the prepared film with the XeCl excimer laser are determined by the spot size, and those with the Nd:YAG laser are determined by the energy of the laser beam. The surfaces of the films prepared by the XeCl excimer laser are smoother.
Published: 2004
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42. LiteBIRD: mission overview and design tradeoffs

Author: N. Katayama, H. Nishino, K. Karatsu, Hirokazu Ishino, Shogo Nakamura, H. Morii, J. Borrill, Shin-ichiro Sakai, H. Ishitsuka, Paul L. Richards, S. Takakura, Hiroki Watanabe, Osamu Tajima, Y. Kibe, K. Koga, Suguru Takada, K. Natsume, Nobuhiro Kimura, T. Morishima, K. Yotsumoto, Kazuhisa Mitsuda, Yutaro Sekimoto, Yoh Takei, Chiko Otani, Takashi Noguchi, Koji Ishidoshiro, Shugo Oguri, Y. Hori, Eiichiro Komatsu, Y. Sato, Masato Naruse, Ryo Nagata, Yuki Inoue, Noriko Y. Yamasaki, J. Inatani, Y. Akiba, Y. Segawa, K. Nishijo, N. Sato, T. Yoshida, Shingo Kashima, A. Kibayashi, Masaya Hasegawa, Yoshinori Uzawa, Hiroyuki Sugita, W. L. Holzapfel, Takehiko Wada, Toshiyuki Nishibori, Isao Kawano, Abraham P. Lee, Mitsuhiro Yoshida, T. Suzuki, Makoto Nagai, Keisuke Shinozaki, M. Inoue, M. Hattori, Kaori Hattori, T. Namikawa, M. A. Dobbs, Masashi Hazumi, H. Fuke, I. S. Ohta, K. Mizukami, Yasuhiro Yamada, Aritoki Suzuki, Tomotake Matsumura, Takayuki Tomaru, N. Okada, Hideo Matsuhara, Atsushi Noda, Satoru Mima, M. Kozu, Yuji Chinone, H. Yamaguchi, Hideo Ogawa, and Kimihiro Kimura
Subjects: Physics, Satellite bus, Mission design, Cosmic microwave background, Systems engineering, Satellite, Orbital mechanics, Remote sensing
Abstract: We present the mission design of LiteBIRD, a next generation satellite for the study of B-mode polarization and inflation from cosmic microwave background radiation (CMB) detection. The science goal of LiteBIRD is to measure the CMB polarization with the sensitivity of δr = 0:001, and this allows testing the major single-field slow-roll inflation models experimentally. The LiteBIRD instrumental design is purely driven to achieve this goal. At the earlier stage of the mission design, several key instrumental specifications, e.g. observing band, optical system, scan strategy, and orbit, need to be defined in order to process the rest of the detailed design. We have gone through the feasibility studies for these items in order to understand the tradeoffs between the requirements from the science goal and the compatibilities with a satellite bus system. We describe the overview of LiteBIRD and discuss the tradeoffs among the choices of scientific instrumental specifications and strategies. The first round of feasibility studies will be completed by the end of year 2014 to be ready for the mission definition review and the target launch date is in early 2020s.
Published: 2014
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43. Thermal study of payload module for the next-generation infrared space telescope SPICA in risk mitigation phase

Author: Hiroyuki Sugita, Kenichiro Sawada, Akinobu Okabayashi, Hideo Matsuhara, Makoto Takada, Keisuke Shinozaki, Takao Nakagawa, Keiji Komatsu, Hiroyuki Ogawa, Makiko Ando, Shun Okazaki, Toshihiko Yamawaki, Yoichi Sato, Katsuhiro Narasaki, Shoji Tsunematsu, and Tadahito Mizutani
Subjects: Physics, Payload, business.industry, Infrared telescope, Astrophysics::Instrumentation and Methods for Astrophysics, Lagrangian point, Spica, Radiant cooling, law.invention, Telescope, Spitzer Space Telescope, law, Astrophysics::Earth and Planetary Astrophysics, Aerospace engineering, business, Astrophysics::Galaxy Astrophysics, Remote sensing, Halo orbit
Abstract: The Space Infrared Telescope for Cosmology and Astrophysics (SPICA) is a pre-project of JAXA in collaboration with ESA to be launched around 2025. The SPICA mission is to be launched into a halo orbit around the second Lagrangian point in the Sun-Earth system, which allows us to use effective radiant cooling in combination with a mechanical cooling system in order to cool a 3m large IR telescope below 6K. The use of 4K / 1K-class Joule-Thomson coolers is proposed in order to cool the telescope and provide a 4K / 1K temperature region for Focal Plane Instruments (FPIs). This paper introduces details of the thermal design study for the SPICA payload module in the Risk-Mitigation-Phase (RMP), in which the activity is focused on mitigating the mission’s highest risks. As the result of the RMP activity, most of all the goals have been fully satisfied and the thermal design of the payload module has been dramatically improved.
Published: 2014
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44. The ASTRO-H X-ray astronomy satellite

Author: Hironori Matsumoto, Yasuharu Sugawara, Hiroshi Tsunemi, Steve Allen, Ikuyuki Mitsuishi, James Pontius, Luigi C. Gallo, Dmitry Khangulyan, Hiroyuki Uchida, Yuichi Terashima, Yoichi Yatsu, Kazutaka Yamaoka, Kiyoshi Hayashida, Makoto Sawada, Peter Shirron, Hirofumi Noda, Andrew C. Fabian, Nicholas E. White, Brian R. McNamara, Dan R. Wilkins, Franco Moroso, Maxim Markevitch, Tadayuki Takahashi, Shin Mineshige, Peter J. Serlemitsos, Stephanie M. LaMassa, Tahir Yaqoob, Richard Mushotzky, Satoshi Sugita, Akihiro Furuzawa, Philipp Azzarello, Atsushi Wada, Yoh Takei, Yoshito Haba, Jun Kataoka, Daisuke Yonetoku, Yoshitaka Ishisaki, Helen Russell, Satoru Katsuda, Hiroaki Takahashi, Knox S. Long, Shinya Nakashima, Meg Urry, Housei Nagano, Chris Baluta, Atsushi Okamoto, Maria Chernyakova, Shin Watanabe, Randall K. Smith, Hans A. Krimm, Samar Safi-Harb, Yuichiro Ezoe, Tsuyoshi Okazaki, Takeshi Go Tsuru, Hiroshi Nakajima, Shin-ichiro Sakai, Katja Pottschmidt, Timothy R. Kallman, Stefan Funk, Kosuke Sato, Naomi Ota, Chikara Natsukari, Kazuo Makishima, Ken Ebisawa, Yasuyuki T. Tanaka, Massimiliano Galeazzi, Tatsuro Kosaka, Mina Ogawa, Jan-Willem den Herder, Atsumasa Yoshida, Joseph Miko, Chris Done, Shin'ichiro Uno, Kosei Ishimura, Hideyuki Mori, Takeshi Nakamori, H. Sameshima, Edward M. Cackett, Francesco Tombesi, Jelle Kaastra, Naoko Iyomoto, Kumi Ishikawa, Takashi Okajima, Yoshihiro Ueda, Hiroyasu Tajima, Mark O. Kimball, Arvind Parmar, Yasuko Shibano, Ryo Iizuka, Masayuki Ohta, Gary A. Sneiderman, Thomas G. Bialas, Toshio Murakami, Masanori Ohno, Christopher S. Reynolds, Masashi Kimura, Yoshiyuki Inoue, Masayuki Ito, Masayoshi Nobukawa, Marshall W. Bautz, Atsushi Harayama, Olivier Limousin, Naohisa Anabuki, Taro Kawano, Maki Shida, Martin Pohl, Saori Konami, Katsuhiro Hayashi, Aya Kubota, Chris Jewell, Yoshitomo Maeda, Steve O' Dell, Yukikatsu Terada, Keiji Ogi, Masanobu Ozaki, Kenji Minesugi, Takahiro Yamada, Edgar Canavan, Hiroki Akamatsu, Katsuji Koyama, Tomomi Watanabe, Marc Audard, Andrew Szymkowiak, Eric J. Miller, Ciro Pinto, Irina Zhuravleva, Shigeo Kawasaki, Jon M. Miller, Grzegorz Madejski, Makoto Tashiro, Ann Hornschemeier, Robert Petre, Koji Mori, Yasunobu Uchiyama, David H. Lumb, Brian D. Ramsey, Alex Koujelev, Shin'ichiro Takeda, Keisuke Shinozaki, Una Hwang, D. Haas, Shiro Ueno, Koji Mukai, Theodore Muench, Shinya Yamada, Masaharu Nomachi, Hiroshi Murakami, Kirk Gilmore, Keith A. Arnaud, Yoichi Sato, Kyoko Matsushita, Yoshiharu Namba, Takuya Miyazawa, Claudio Ricci, Teruaki Enoto, Masahiro Tsujimoto, Ryuichi Fujimoto, Dan McCammon, Daniel S. McGuinness, Abderahmen Zoghbi, Carlo Ferrigno, Motohide Kokubun, Stéphane Paltani, Elisa Costantini, Hiroshi Tomida, Maurice A. Leutenegger, Laura Brenneman, Tsunefumi Mizuno, Keisuke Tamura, Aurora Simionescu, Toru Tamagawa, Paolo De Coppi, Hiroyuki Sugita, Rie Sato, F. Scott Porter, Yusuke Nishioka, Franccois Lebrun, Takanobu Shimada, Yuzuru Tawara, Takayoshi Kohmura, Makoto Yamauchi, Shinya Saito, Jelle de Plaa, Michael J. DiPirro, Poshak Gandhi, Yasushi Fukazawa, Richard L. Kelley, Hirokazu Odaka, Nobuyuki Kawai, Junko S. Hiraga, Frits Paerels, Hiromi Seta, Takao Nakagawa, Rubens Reis, Tetsu Kitayama, Manabu Ishida, Cor P. de Vries, Hiromitsu Takahashi, Kazuhisa Mitsuda, Akio Hoshino, Kazuhiro Nakazawa, Felix Aharonian, Matteo Guainazzi, Meng P. Chiao, Eugenio Ursino, Adam R. Foster, John ZuHone, Hiroyuki Ogawa, John P. Doty, Takayuki Hayashi, Yasuo Tanaka, Junichiro Katsuta, Madoka Kawaharada, Hisamitsu Awaki, Kevin R. Boyce, John P. Hughes, Hiroya Yamaguchi, Ryo Nagino, Lorella Angelini, Philippe Laurent, Michael Loewenstein, Tuneyoshi Kamae, Yang Soong, Takaaki Tanaka, Tadayasu Dotani, Candace Masters, Aya Bamba, Kenji Hamaguchi, Roger Blandford, Kazunori Ishibashi, Takayuki Yuasa, Hideki Uchiyama, Takayuki Tamura, Kazuyuki Hirose, Naoko Iwata, Shunji Kitamoto, Goro Sato, Greg Brown, Shutaro Ueda, Megan E. Eckart, Cynthia Simmons, Takaya Ohashi, Hideyo Kunieda, Lukasz Stawarz, Yohko Tsuboi, Norbert Werner, Fumie Akimoto, Shigeo Yamauchi, Noriko Y. Yamasaki, Nobutaka Bando, Isamu Hatsukade, Caroline A. Kilbourne, and Makoto Asai
Subjects: Physics, Astronautics, X-ray astronomy, Astrophysics::High Energy Astrophysical Phenomena, gamma radiation, Dark matter, Astrophysics::Instrumentation and Methods for Astrophysics, FOS: Physical sciences, Astronomy, x-rays, x-ray astronomy, Redshift, Gravitation, satellites, Settore FIS/05 - Astronomia e Astrofisica, spectral resolution, Satellite, equipment and services, Spectral resolution, Astrophysics - Instrumentation and Methods for Astrophysics, galaxy groups and clusters, Instrumentation and Methods for Astrophysics (astro-ph.IM), Galaxy cluster
Abstract: The joint JAXA/NASA ASTRO-H mission is the sixth in a series of highly successful X-ray missions developed by the Institute of Space and Astronautical Science (ISAS), with a planned launch in 2015. The ASTRO-H mission is equipped with a suite of sensitive instruments with the highest energy resolution ever achieved at E > 3 keV and a wide energy range spanning four decades in energy from soft X-rays to gamma-rays. The simultaneous broad band pass, coupled with the high spectral resolution of Delta E < 7 eV of the micro-calorimeter, will enable a wide variety of important science themes to be pursued. ASTRO-H is expected to provide breakthrough results in scientific areas as diverse as the large-scale structure of the Universe and its evolution, the behavior of matter in the gravitational strong field regime, the physical conditions in sites of cosmic-ray acceleration, and the distribution of dark matter in galaxy clusters at different redshifts., 24 pages, 18 figures, Proceedings of the SPIE Astronomical Instrumentation "Space Telescopes and Instrumentation 2014: Ultraviolet to Gamma Ray"
Published: 2014
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45. Soft x-ray spectrometer (SXS): the high-resolution cryogenic spectrometer onboard ASTRO-H

Author: Akio Hoshino, Shunji Kitamoto, Cor P. de Vries, Keisuke Shinozaki, Kazuhisa Mitsuda, Makoto Tashiro, Masahide Murakami, Kevin R. Boyce, Thomas G. Bialas, Mark O. Kimball, Gary A. Sneiderman, Gregory V. Brown, Masahiro Tsujimoto, Ryuichi Fujimoto, Naomi Ota, Joseph Miko, Yoichi Sato, Kosuke Sato, Hiroki Akamatsu, Andrew Szymkowiak, Yukikatsu Terada, Dan McCammon, Yuichiro Ezoe, Hiroyuki Sugita, Meng P. Chiao, Elisa Costantini, Hiromi Seta, Saori Konami, Richard L. Kelley, Maurice A. Leutenegger, Edgar Canavan, Jan-Willem den Herder, Yoshitaka Ishisaki, Makoto Sawada, Toru Tamagawa, Ikuyuki Mitsuishi, Shinya Yamada, F. Scott Porter, Caroline A. Kilbourne, Peter Shirron, Michael J. DiPirro, Mina Ogawa, D. Haas, Hiroshi Murakami, Naoko Iyomoto, Hirofumi Noda, Megan E. Eckart, Takaya Ohashi, Noriko Y. Yamasaki, Stéphane Paltani, Yoh Takei, Atsushi Okamoto, and Kumi Ishikawa
Subjects: Physics, Cryostat, X-ray spectroscopy, X-ray astronomy, Optics, Spectrometer, Interference (communication), business.industry, Resolution (electron density), Detector, business, Spectroscopy
Abstract: We present the development status of the Soft X-ray Spectrometer (SXS) onboard the ASTRO-H mission. The SXS provides the capability of high energy-resolution X-ray spectroscopy of a FWHM energy resolution of < 7eV in the energy range of 0.3 – 10 keV. It utilizes an X-ray micorcalorimeter array operated at 50 mK. The SXS microcalorimeter subsystem is being developed in an EM-FM approach. The EM SXS cryostat was developed and fully tested and, although the design was generally confirmed, several anomalies and problems were found. Among them is the interference of the detector with the micro-vibrations from the mechanical coolers, which is the most difficult one to solve. We have pursued three different countermeasures and two of them seem to be effective. So far we have obtained energy resolutions satisfying the requirement with the FM cryostat.
Published: 2014
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46. Development and testing of a zero stitch MLI blanket using plastic pins for space use

Author: Takeshi Miyakita, Tomoyuki Hirai, Ryuta Hatakenaka, Masanori Saitoh, and Hiroyuki Sugita
Subjects: business.product_category, Materials science, Bending (metalworking), General Physics and Astronomy, Liquid nitrogen, Blanket, Fastener, Calorimeter, Cabin pressurization, Thermal, Peek, General Materials Science, Composite material, business, Multi-Layer Insulation, MLI, Thermal performance, Boil-off
Abstract: New types of MLI blanket have been developed to achieve high thermal performance while maintaining production and assembly workability equivalent to the conventional type. Tag-pins, which are widely used in commercial applications to hook price tags to products, are used to fix the films in place and the pin material is changed to polyetheretherketone (PEEK) for use in space. Thermal performance is measured by using a boil-off calorimeter, in which a rectangular liquid nitrogen tank is used to evaluate the degradation at the bending corner and joint of the blanket. Zero-stitch- and multi-blanket-type MLIs show significantly improved thermal performance (Eeff is smaller than 0.0050 at room temperature) despite having the same fastener interface as traditional blankets, while the venting design and number of tag-pins are confirmed as appropriate in a depressurization test., 資料番号: PA1410013000
Published: 2014

47. Two-Dimensional Analysis of Two-Phase Flow in Pulsed MHD Generator with Particle Model

Author: Yoshitaka Inui, Motoo Ishikawa, Tetsuji Matsuo, and Hiroyuki Sugita
Subjects: Physics, Magnetohydrodynamic generator, law, Particle model, Energy Engineering and Power Technology, Mechanics, Two-phase flow, Electrical and Electronic Engineering, law.invention
Published: 2000
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48. Gas-Particle Two-Phase Flow Analysis Considering Collision-Coalescence and Fragmentation of Al2O3 Particles in Pulsed MHD Generator

Author: Hiroyuki Sugita, Tetsuji Matsuo, Yoshitaka Inui, and Motoo Ishikawa
Subjects: Materials science, Fragmentation (mass spectrometry), Magnetohydrodynamic generator, law, Energy Engineering and Power Technology, Two-phase flow, Electrical and Electronic Engineering, Collision, Molecular physics, law.invention
Published: 1999
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49. Performance Analysis of Pulsed MHD Channel with Boundary-Layer Separation

Author: Tetsuji Matsuo, Hiroyuki Sugita, and Motoo Ishikawa
Subjects: Physics, Flow separation, Energy Engineering and Power Technology, Mechanics, Electrical and Electronic Engineering, Magnetohydrodynamics, Communication channel
Published: 1999
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50. PERFORMANCE OF LIGHTWEIGHT LARGE C/SiC MIRROR.

Author: YUI, Yukari Y., Ken GOTO, Hidehiro KANEDA, Haruyoshi KATAYAMA, Masaki KOTANI, Masashi MIYAMOTO, Masataka NAITOH, Takao NAKAGAWA, Hideki SARUWATARI, Masahiro SUGANUMA, Hiroyuki SUGITA, Yoshio TANGE, Shin UTSUNOMIYA, Yasuji YAMAMOTO, and Toshihiko YAMAWAKI
Published: 2017
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