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Report No.
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Development of gyrotron and JT-60U EC heating system for fusion reactor

Sakamoto, Keishi; Kasugai, Atsushi; Ikeda, Yoshitaka; Hayashi, Kenichi*; Takahashi, Koji; Kajiwara, Ken; Moriyama, Shinichi; Seki, Masami; Kariya, Tsuyoshi*; Mitsunaka, Yoshika*; Tsuneoka, Masaki; Fujii, Tsuneyuki; Imai, Tsuyoshi

The development of a key EC component, 1 MW gyrotron, and integration of the EC technologies on JT-60U EC system have been carried out. In the development of 1 MW gyrotron, the output of 1.3 MW was achieved. In pulse extension experiment, the outputs of 0.9 MW for 9.2 second and 0.5 MW for 30 sec. at 170 GHz, and 1.2 MW for 4.1 sec. at 110 GHz. In the JT-60U EC system, the maximum injection performances were 3 MW for 2sec, and contributed to produce high electron temperature plasma of 26 keV.

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