Development of beam monitor DAQ system for 3NBT at J-PARC

Oi, Motoki ; Kai, Tetsuya   ; Meigo, Shinichiro   ; Kinoshita, Hidetaka   ; Sakai, Kenji ; Sakamoto, Shinichi; Kaminaga, Masanori  ; Kato, Takashi; Kato, Tadahiko*

The 3GeV proton beam transport facility (3NBT) is a high-intensity proton beam line from the 3GeV Rapid Cycling Synchrotron (RCS) to the Material and Life science Facility (MLF) at Japan Proton Accelerator Research Complex (J-PARC). In order to allow hands-on maintenance, a design criterion has been that the average beam loss at 3NBT be less than 1W/m. The systems for beam monitoring and magnet power control play an important role. In J-PARC, the Experimental Physics and Industrial Control System (EPICS) [1] will be used for the main control system. For the proton beam monitor system of 3NBT, EPICS is used and it has to work at 25Hz. In this study, a data acquisition system for the proton beam monitors is presented that has been developed with EPICS. Its performance has been investigated under 25Hz frequency condition.