Development of EC system components for steady state plasma operation

定常プラズマ運転に向けた電子サイクロトロン加熱システム機器の開発

小田 靖久; 池田 亮介; 高橋 幸司; 梶原 健; 坂本 慶司; Gandini, F.*; Darbos, C.*; Purohit, D.*; Henderson, M.*

Oda, Yasuhisa; Ikeda, Ryosuke; Takahashi, Koji; Kajiwara, Ken; Sakamoto, Keishi; Gandini, F.*; Darbos, C.*; Purohit, D.*; Henderson, M.*

For steady state plasma operation, EC H&CD system components, such as transmission line (TL), are required to be compliant with high power CW operation. One of issues of EC H&CD TL for steady state operation is the deformation of TL system due to thermal load by high power operation. The controllability of TL components during RF operation is another issue for steady state operation. In JAEA, ITER relevant TL was examined for long pulse operation up to 1,000 sec using a 170 GHz high power gyrotron.