K
K. Miyamoto
Researcher at Japan Atomic Energy Research Institute
Publications - 37
Citations - 469
K. Miyamoto is an academic researcher from Japan Atomic Energy Research Institute. The author has contributed to research in topics: Ion & Ion source. The author has an hindex of 10, co-authored 31 publications receiving 451 citations.
Papers
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Journal ArticleDOI
Neutral beams for ITER
R. S. Hemsworth,J.-H. Feist,M. Hanada,Bernd Heinemann,Takashi Inoue,E. Kussel,A. Krylov,P. Lotte,K. Miyamoto,Naoki Miyamoto,D. Murdoch,A. Nagase,Yoshihiro Ohara,Yoshikazu Okumura,Jérôme Paméla,A. Panasenkov,Keiichi Shibata,M. Tanii,M. Watson +18 more
TL;DR: In this paper, three negative ion-based neutral injectors were designed in Europe, Japan, and Russia, with coordination by the Joint Central Team of ITER at Naka, Japan.
Journal ArticleDOI
High energy negative-ion based neutral beam injection system for JT-60U
Masaaki Kuriyama,N. Akino,Masanori Araki,N. Ebisawa,M. Hanada,Takashi Inoue,Mikito Kawai,M. Kazawa,J. Koizumi,T. Kunieda,Mamoru Matsuoka,K. Miyamoto,M. Mizuno,K. Mogaki,Yoshihiro Ohara,T. Ohga,Yoshikazu Okumura,H. Oohara,F. Satoh,T. Suzuki,S. Takahashi,T. Takayasu,H. Usami,K. Usui,Kazuhiro Watanabe,Yamamoto Masahiro,T. Yamazaki +26 more
TL;DR: In this article, the negative-ion-based neutral beam injection (NBI) system for JT-60U has been proposed and shown to demonstrate a mega-amp level NB current drive at high plasma density and to study high energy beam heating in reactor-grade plasmas.
Journal ArticleDOI
Negative hydrogen ion source for TOKAMAK neutral beam injector (invited)
Yoshikazu Okumura,Y. Fujiwara,Mieko Kashiwagi,T. Kitagawa,K. Miyamoto,T. Morishita,M. Hanada,T. Takayanagi,M. Taniguchi,Kazuhiro Watanabe +9 more
TL;DR: In this article, a negative ion source for JT-60U has been developed for the neutral beam injector (NBI) in TOKAMAK thermonuclear fusion machines.
Journal ArticleDOI
A merging preaccelerator for high current H− ion beams
Takashi Inoue,K. Miyamoto,M. Mizuno,Yoshikazu Okumura,Yoshihiro Ohara,G. D. Ackerman,C. F. Chan,W. S. Cooper,J.W. Kwan,M. C. Vella +9 more
TL;DR: The feasibility of a high current merging preaccelerator was demonstrated in this paper by merging 19 beamlets of H− ions distributed over a circular area 80 mm in diameter from a Japan Atomic Energy Research Institute negative ion source.
Journal ArticleDOI
High power negative ion sources for fusion at the Japan Atomic Energy Research Institute (invited)
Yoshikazu Okumura,Y. Fujiwara,Takashi Inoue,K. Miyamoto,Naoki Miyamoto,A. Nagase,Yoshihiro Ohara,Kazuhiro Watanabe +7 more
TL;DR: In this article, two research and development projects have been initiated; one is to develop a 22 A/500 keV/10 s D− ion source for the neutral beam injector for JT‐60U, and the other is to demonstrate high current negative ion acceleration up to the energy of 1 MeV.