High power beam operation with the negative-ion based NBI for JT-60U

Masaaki Kuriyama,Norio Akino,N Ebisawa,L R Grisham,M Hanada,Aoi Honda,Takayuki Itoh,Masanori Kawai,Minoru Kazawa,Jun Koizumi, K Mogaki,Y Ohara,T Ohga,Kenji Ohmori,Y Okumura,Hiroshi Oohara,K Ohshima,Fumiko Satoh,Hirota Seki, Takao Takenouchi,Yutaka Tanai,Y Toyokawa, Kazushi Usui,Kiyoshi Watanabe,H Yamazaki,T Yamazaki

Fusion Engineering, 1997. 17th IEEE/NPSS Symposium（1997）

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Abstract

The negative-ion based NBI for JT-60U has been making efforts to increase beam power and beam energy since the operation started in March 1996. The NBI system has already operated negative ion beams of 14.3 A at 380 keV with deuterium and 18.4 A at 350 keV with hydrogen. In the beam injection into JT-60U, a deuterium neutral beam power of 3.6 MW at 350 keV has been injected for 0.9 sec, and plasma reactions against the high energy beam injection with the N-NBI have been confirmed to be in agreement with a theoretical prediction

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Key words

fusion reactor design,fusion reactor ignition,fusion reactor operation,plasma beam injection heating,plasma toroidal confinement,14.3 a,18.4 a,3.6 mw,350 kev,380 kev,d,h,jt-60u,fusion reactors,high power beam operation,negative-ion based nbi,neutral beam injection,plasma reactions,tokamak,deuterium,heating

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