WEOB01 　加速器制御　 8月11日 会議室B 9:00 - 9:20

重イオンビーム輸送系へのExtremum Seeking制御の適用

Extremum Seeking Control for the Optimization of Heavy Ion Beam Transportation

○藤井 洋樹（理化学研究所 仁科加速器科学研究センター），Scheinker Alexander（Los Alamos National Laboratory），内山 暁仁（理化学研究所 仁科加速器科学研究センター），Gessner Spencer（SLAC National Accelerator Laboratory），上垣外 修一，福西 暢久（理化学研究所 仁科加速器科学研究センター）

○Hiroki Fujii (Nishina Center, RIKEN), Alexander Scheinker (Los Alamos National Laboratory), Akito Uchiyama (Nishina Center, RIKEN), Spencer Gessner (SLAC National Accelerator Laboratory), Osamu Kamigaito, Nobuhisa Fukunishi (Nishina Center, RIKEN)

Riken Nishina Center (RNC) is currently working on automated tuning and diagnostics algorithms to enable efficient and optimal operation of its heavy ion beam accelerator complex. We applied the recently developed dither-based Extremum Seeking Control (ESC) scheme to a part of the heavy ion beam transport system to adjust beam optics. This paper briefly explains the ESC algorithm whose input states are bounded within a safe operation condition, and the results of the beam optics tuning with ESC based on noise-corrupted measurements while reducing the damage to accelerator components. The robustness of ESC under noisy environment and potential applications for higher current operation while suppressing the unknown nonlinear effects at RNC accelerator complex are also discussed.