WEOT05 　電子加速器　 7月31日 テルサホール 16:40-17:00

排水浄化のための5MeV SRF電子リニアックの数値解析

Numerical study of 5 MeV SRF electron linac for wastewater purification

○カバール アンジャリバグワン，柏木 茂，武藤 俊哉（東北大先端量子），増田 開（増田 開＠QST六ヶ所研），安彦 颯人，日出 富士雄，工藤 滉大，長澤 育郎，南部 健一，柴田 晃太朗，高橋 健，山田 悠樹，濱 広幸（東北大先端量子）

○Anjali Bhagwan Kavar, Shigeru Kashiwagi, Toshiya Muto (RARIS, Tohoku University), Kai Masuda (QST-Rokkasho), Hayato Abiko, Fujio Hinode, Kodai Kudo, Ikuro Nagasawa, Kenichi Nanbu, Kotaro Shibata, Ken Takahashi, Hiroki Yamada, Hiroyuki Hama (RARIS, Tohoku University)

Superconducting Radio Frequency (SRF) technology is a proven solution for generating high-power electron beams (EB), suitable for tasks like purifying wastewater from challenging impurities like PFAS. This study elaborates on effectiveness of EB treatment and outlines design considerations for a 1.3 GHz SRF linac operating at 5 MeV with an average beam current of 10 mA. Given the need for high beam current, achieving a high bunch repetition rate is paramount. The primary focus of this paper is on the design of an injector system that accepts the time-width of the bunch produced by the electron gun as long as possible and compresses it to a bunch length suitable for smooth acceleration to 5 MeV in a 1.3 GHz linac. Numerical analyses for the accelerator system, ensuring that the beam reaches 5 MeV with the desired characteristics, lead to a compact beamline structure. This structure includes a 100 kV thermionic gridded gun, a 650 MHz buncher cavity, a 1.3 GHz 3-cell low beta booster cavity, and three 2-cell 1.3 GHz accelerator cavities, along with necessary focusing solenoids, all fitting within ~4 meters. The results of the numerical studies will be presented at this conference.