Unified Beam Control System of J-PARC Linac

A beam control system has been developed for the J-PARC linac to achieve strict design goals of beam performance and beam loss suppression in the high-intensity H^- beams. An emerging concept of unified beam control has been adopted in the system, where a unified data source, standardized control units, a unified online model, and uniform high-level application frameworks have been designed and implemented. For precise beam controls, various beam tuning algorithms have been developed and tested. Design goals of beam performance, beam stability, and beam loss suppression have been achieved in the linac.