特集 J-PARC，その軌跡と未来
J-PARCリニアックの運転状況と出力増強に向けた検討
2025 年 21 巻 4 号 p. 288-296
詳細
2025 年 21 巻 4 号 p. 288-296
The J-PARC linac has started beam operation to users since 2008. With energy and current upgrade at 2013 and 2014 respectively, the linac provides a nominal peak current of 50 mA beam at an energy of 400 MeV to the following 3 GeV rapid-cycling synchrotron (RCS) since Oct. 2018. The linac is currently operating at the design macro-pulse length of 0.5 ms, which corresponds to 1 MW output from the RCS. Beam studies have been continued to improve beam quality to reduce beam loss. Further beam current/duty upgrades of the linac are currently being considered to achieve beam output beyond 1 MW at RCS and to provide a 400 MeV beam to the test facility through 50 Hz operation of the linac.
