Development of 110GH/138GHz ECH system for JT-60SA

Moriyama, Shinichi; Kobayashi, Takayuki; Sawahata, Masayuki; Terakado, Masayuki; Hiranai, Shinichi; Wada, Kenji; Sato, Yoshikatsu; Hinata, Jun; Yokokura, Kenji; Hoshino, Katsumichi; Takahashi, Koji; Kajiwara, Ken; Oda, Yasuhisa; Ikeda, Ryosuke; Isayama, Akihiko; Sakamoto, Keishi

Long pulse operation of the dual frequency gyrotron was started for JT-60SA ECH system. Pulse lengths of 10 s with output power of 1MW were obtained at both 110 GHz and 138 GHz, so far. Typical oscillation efficiency is approximately 30%. Diffraction loss was acceptable for long pulse 1 MW output. The first high power test of the "power / beam profile monitor" featuring a fast movable Si $_{3}$ 3N $_{4}$ disk in the waveguide slit was successfully demonstrated.

Language	:	English
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Meeting title	:	Japan-Korea Workshop on Physics and Technology of Heating and Current Drive
Held date	:	2014/01
Location (city)	:	Awara
Location (country)	:	Japan
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Keywords	:	no keyword
Research Facility	:	JT-60(臨界プラズマ試験装置)
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Registration No. : BB20132881
JAEA Abstracts No. :
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