@misc{oai:repo.qst.go.jp:00066262,
 author = {假家, 強 and 今井, 剛 and 南, 龍太郎 and 沼倉, 友晴 and 津村, 康平 and 江橋, 優斗 and 遠藤, 洋一 and 池添, 竜也 and 中嶋, 洋輔 and 坂本, 慶司 and 小田, 靖久 and 池田, 亮介 and 高橋, 幸司 and 小林, 則幸 and 森山, 伸一 and 下妻, 隆 and 久保, 伸 and 吉村, 泰夫 and 高橋, 裕己 and 伊神, 弘恵 and 伊藤, 哲 and 岡田, 宏太 and 小林, 策治 and 武藤, 敬 and 出射, 浩 and 花田, 和明 and 長崎, 百伸 and 小野, 雅之 and 江口, 濯 and 満仲, 義加 and 坂本 慶司 and 小田 靖久 and 池田 亮介 and 高橋 幸司 and 森山 伸一},
 month = {Oct},
 note = {Megawatt (MW) gyrotrons with a wide frequency range from 14 to 300 GHz are being developed for the collaborative ECH study of advanced fusion devices and DEMO reactor. (1) In the first experiment of 300 GHz gyrotron, an output power of over 0.5 MW with TE32,18 single-mode was achieved with a pulse width of 2 ms. This is the first report of MW level oscillation with the DEMO-relevant ECH gyrotron mode. It was also found that the reflection at the output window affects the oscillation mode determination. (2) A new record of the 28 GHz gyrotron output of 1.38 MW was obtained. The fabrication of a newly designed tube aimed at a dual-frequency output power of 2 MW at 28 GHz (0.4 MW CW) and 1 MW at 35 GHz has begun, with all components ready for assembly. (3) Based on the successful results of 77 and 154 GHz LHD tubes, the new design of a 154/116 GHz dual-frequency gyrotron with output of over 1.5 MW has been presented., 26th IAEA Fusion Energy Conference},
 title = {Development of Over MW Gyrotrons for Fusion at Frequencis from 14 GHz to Sub-terahertz},
 year = {2016}
}