Refine your search:     
Report No.

Development of multi-purpose MW gyrotrons for fusion devices

Minami, Ryutaro*; Kariya, Tsuyoshi*; Imai, Tsuyoshi*; Numakura, Tomoharu*; Endo, Yoichi*; Nakabayashi, Hidetaka*; Eguchi, Taku*; Shimozuma, Takashi*; Kubo, Shin*; Yoshimura, Yasuo*; Igami, Hiroe*; Takahashi, Hiromi*; Muto, Takashi*; Ito, Satoshi*; Idei, Hiroshi*; Zushi, Hideki*; Yamaguchi, Yusuke*; Sakamoto, Keishi; Mitsunaka, Yoshika*; GAMMA10 Group*

The latest development achievements in University of Tsukuba of over-1 MW power level gyrotrons required in the present-day fusion devices, GAMMA 10, LHD, QUEST, Heliotron J and NSTX are presented. The obtained maximum outputs are 1.9 MW for 0.1 s on the 77 GHz LHD tube and 1.2 MW for 1 ms on the 28 GHz GAMMA 10 one, which are new records in these frequency ranges. In long pulse operation, 0.3 MW for 40 min at 77 GHz and 0.54 MW for 2 s at 28 GHz were achieved. A new program of 154 GHz 1 MW development has started for high density plasma heating in LHD. On the first 154 GHz tube, 1.0 MW for 1 s was achieved. As a next activity of 28 GHz gyrotron, we have already carried out the development of over-1.5 MW gyrotron and design study of the 28 GHz cavity and mode converter has shown the possibility of 2 MW level output and CW operation with several hundred kW. Besides, a new design study of dual frequency gyrotron at 28 GHz and 35 GHz has been started, which indicates the practicability of the multi-purpose gyrotron.



- Accesses





[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.