J-PARC速い繰り返しの3 GeVシンクロトロンにおける1 MW連続運転と1 MW超ビーム加速に向けた検討

抄録

J-PARC 3 GeV Rapid Cycling Synchrotron (RCS) had demonstrated its potential to accelerate a 1-MW beam in 2015 with a single shot trial. After that, we have continued the beam studies and hardware improvements to establish a 1-MW continuous beam condition. Thanks to those efforts, we achieved the 1-MW user operation in April 2024. This report summarizes the major topics of those studies and improvement works. We also introduce the plan to accelerate beyond 1-MW beam.