TUOM07 　ビーム診断・ビーム制御／高周波源　 8月9日 会議室201 11:10 - 11:30

J-PARC MR 遅いビーム取出し運転モードにおける電子雲の研究

Electron Cloud Study at SX Operation Mode at J-PARC MR

○イーレンドン ブルース，久保木 浩功，佐藤 健一郎，外山 毅（KEK/J-PARC）

○Bruce Yee-rendon, Hironori Kuboki, Kenichirou Satou, Takeshi Toyama (KEK/J-PARC)

Electron cloud is a main limitation for the successful operation of the high intensity proton beam in the world. Its presence at Main Ring (MR) of the Japan Proton Accelerator Research Complex (J-PARC), during the Slow beam extraction (SX) mode, was already observed through several systems: sweeping electron detector, beam loss detectors, vacuum gauges, beam position monitors, etc. A more detailed survey and upgrade of the beam loss system were implemented for this study. The latest results of the electron cloud study are presented here.