THP57 　ポスター③　 8月31日 14号館1444教室 13:30-15:30

1.3 GHz cERL入射器空洞用試作カップラーを用いた大電力試験結果の報告

Experimental result of high-power transmission through 1.3 GHz cERL injector prototype coupler

○ナマ プラギャ（総合研究大学院大学），クマール アシーシ，荒川 大，梅森 健成，加古 永治，阪井 寛志，三浦 孝子（高エネルギー加速器研究機構）

○Pragya Nama (SOKENDAI), Ashish Kumar, Dai Arakawa, Kensei Umemori, Eiji Kako, Hiroshi Sakai, Takako Miura (KEK)

To get the experience of power transmission through high power coupler, some experiments were conducted at cERL test facility of KEK. The transmission of high power, up to 20 kW in CW mode at the frequency of 1.3GHz, was achieved with the help of cERL injector coupler’s prototype. The RF simulations of the coupler test stand were also performed. The result of the experiments showed that while transferring 20kW power in CW mode, the temperature rise at some parts of the coupler is substantial, and maximum temperature rise of 166 degree Celsius was observed at the inner conductor of the coupler. To realize the transmission of higher power levels in CW mode, the modifications in the existing coupler design and introduction of some cooling mechanism are essential. The details of the experiment and simulation are discussed.