4 Papers
17 Citations
K. Ohba is an academic researcher from National Institutes of Natural Sciences, Japan. The author has contributed to research in topics: Liquid helium & Refrigerator car. The author has an hindex of 3, co-authored 4 publications.
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Papers
Overall Operating Characteristics of Superconducting Current-Feeder System for the LHD
Shuichi Yamada,Toshiyuki Mito,Ryuji Maekawa,Hirotaka Chikaraishi,Arata Nishimura,A. Iwamoto,S. Moriuchi,K. Ohba,T. Baba,Toshio Uede,H. Hiue,Yukio Yasukawa,I. Itoh,Takashi Satow,Sadao Satoh,Osamu Motojima +15 more
TL;DR: In this paper, a superconducting (SC) current-feeder system is used as the cuirait transmission lines fon the LHD, which consists of nine SC bus lines with total length of 497 m and nine pairs of gas-cooled current leads.
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Study of Optimum Operating Condition for the Helium Refrigeration System of the LHD with a Dummy Load Apparatus
Ryuji Maekawa,T. Mito,Shuichi Yamada,Sadao Satoh,A. Iwamoto,T. Baba,S. Moriuchi,K. Ohba,H. Sekiguchi,I. Ohtake,H. Yamada,J. Yamamoto,O. Motojima,K. Chida,T. Fukano +14 more
- 01 Jan 1997
TL;DR: In this article, a dummy heat load experimental apparatus is developed to test a refrigeration system of the Large Helical Device (LHD), which is operated with three refrigeration modes under steady-state condition.
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Cooling and excitation tests of an inner vertical coil for the Large Helical Device
Takashi Satow,Toshiyuki Mito,Kazuya Takahata,Junya Yamamoto,Sadao Satoh,A. Nishimura,S. Yamada,Nagato Yanagi,Hirotaka Chikaraishi,A. Iwamoto,S. Tanahashi,Shinsaku Imagawa,Hitoshi Tamura,K. Yamazaki,S. Yamaguchi,K. Watanabe,Hiroshi Yamada,N. Noda,Akio Sagara,Kenya Akaishi,Yuusuke Kubota,N. Inoue,Hajime Suzuki,Tomohiro Morisaki,S. Kitagawa,Nobuyoshi Ohyabu,A. Komori,T. Baba,S. Moriuchi,K. Ohba,M. Iima,H. Yonezu,H. Hayashi,Y. Taniguchi,H. Ogawa,S. Tamura,I. Ohtake,O. Motojima,S. Morimoto,M. Takeo,S. Sato,Akira Ninomiya,S. Ioka,K. Nakamoto,T. Uede,Y. Hoshi +45 more
TL;DR: The Large Helical Device (LHD) under construction at NIFS is a nuclear fusion experimental device consisting of two superconducting helical coils and three pairs of poloidal coils.
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First cycle operation of SC current feeder system for the LHD
S Yamada,T. Mito,R. Mackawa,H. Chikaraishi,A. Iwamoto,Arata Nishimura,K. Nishimura,S. Moriuchi,K. Ohba,T. Baba,H. Sekiguchi,T. Uede,H. Hiue,Y. Yasukawa,I. Itoh,K Schippl,T. Satow,Sadao Satoh,O. Motojima +18 more
- 01 Jan 1998
TL;DR: In this paper, a superconducting (SC) current feeder system with total length of 497 m was kept in cryostable condition during two months, and mass flow rates, pressures and liquid helium levels of the system were controlled automatically in the steady state operation.
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