J
Junichi Miyazawa
Researcher at Graduate University for Advanced Studies
Publications - 83
Citations - 821
Junichi Miyazawa is an academic researcher from Graduate University for Advanced Studies. The author has contributed to research in topics: Large Helical Device & Divertor. The author has an hindex of 16, co-authored 83 publications receiving 736 citations. Previous affiliations of Junichi Miyazawa include Forschungszentrum Jülich & National Institutes of Natural Sciences, Japan.
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Journal ArticleDOI
Helical reactor design FFHR-d1 and c1 for steady-state DEMO
Akio Sagara,Hitoshi Tamura,Teruya Tanaka,Nagato Yanagi,Junichi Miyazawa,Takuya Goto,Ryuichi Sakamoto,Juro Yagi,Tsuguhiro Watanabe,Sadatsugu Takayama +9 more
TL;DR: In this article, a new Flinabe blanket mixed with metal powder was proposed to protect the diverter targets from fast neutrons in the LHD-type helical reactor FFHR-d1.
Journal ArticleDOI
Detachment stabilization with n/m=1/1 resonant magnetic perturbation field applied to the stochastic magnetic boundary of the Large Helical Device
Masahiro Kobayashi,Suguru Masuzaki,I. Yamada,Naoki Tamura,Y. Feng,K. Sato,M. Goto,Y. Narushima,T. Akiyama,Junichi Miyazawa,M. Shoji,S. Morita,B. J. Peterson,H. Funaba,N. Ohyabu,K. Narihara,T. Morisaki,Hiroshi Yamada,A. Komori,Detlev Reiter +19 more
TL;DR: Feng et al. as discussed by the authors found that the island structure created by n/m=1/1 resonant magnetic perturbation field in the stochastic magnetic boundary of the LHD has a stabilizing effect on formation of radiating plasma, realizing stably sustained divertor detachment operation with the core plasma being unaffected.
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Compact toroid injection experiment in JFT-2M
Toru Ogawa,Naoyuki Fukumoto,M. Nagata,H. Ogawa,Masaki Maeno,K. Hasegawa,T. Shibata,T. Uyama,Junichi Miyazawa,Satoshi Kasai,Hisato Kawashima,Y.M. Miura,Seio Sengoku,Haruyuki Kimura +13 more
TL;DR: In this paper, compact toroid (CT) injection experiments with H-mode plasmas were carried out for the first time in the JFT-2M tokamak.
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Density limit study focusing on the edge plasma parameters in LHD
Junichi Miyazawa,Ryuichi Sakamoto,Suguru Masuzaki,B.J. Peterson,Naoki Tamura,Motoshi Goto,Ichihiro Yamada,K. Narihara,Kenji Tanaka,T. Tokuzawa,Mamoru Shoji,Makoto I. Kobayashi,Hajime Arimoto,Katsumi Kondo,Sadayoshi Murakami,H. Funaba,Satoru Sakakibara,Masaki Osakabe,S. Morita,Y. Nagayama,Nobuyoshi Ohyabu,Hiroshi Yamada,A. Komori,O. Motojima +23 more
TL;DR: In this article, the edge density limit scaling was extended for completely detached plasmas by taking into account the shrinking plasma edge, where the plasma edge shrinks inside the last-closed-flux-surface (LCFS).
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Divertor transport study in the Large Helical Device
Masahiro Kobayashi,Y. Feng,Suguru Masuzaki,M. Shoji,Junichi Miyazawa,T. Morisaki,Nobuyoshi Ohyabu,N Ashikawa,A. Komori,O. Motojima,Yuri Igitkhanov,F. Sardei,Detlev Reiter +12 more
TL;DR: In this paper, the authors investigated the transport properties of the edge region in LHD and clarified the divertor/SOL function of the heliotron type device and found that the momentum loss due to the friction of counter-flows induced by the ergodic field lines breaks the pressure conservation along flux tubes.