Author: Uchiyama, A.
Paper Title Page
MOPHA073 Recent Updates of the RIKEN RI Beam Factory Control System 384
  • M. Komiyama, M. Fujimaki, N. Fukunishi, A. Uchiyama
    RIKEN Nishina Center, Wako, Japan
  We report on two latest updates of the RIKEN Radioactive Isotope Beam Factory (RIBF) control system. First, the successor of the existing beam interlock system (BIS) operated since 2006 was developed in 2019. As a first step, it covers a small part of the RIBF facility. The new interlock system is based on a programmable logic controller (PLC) and uses a Linux-based PLC-CPU on that the Experimental Physics and Industrial Control System (EPICS) programs can be executed in addition to a sequencer. By using two kinds of CPUs properly according to the speed required for each signal handled in the system, we succeeded in reducing the response time less than one third of the BIS in the performance test using prototype. Second, we plan to expand coverage of the alarm system. We have applied the Best Ever Alarm System Toolkit (BEAST) for several years in addition to the Alarm Handler mainly to vacuum components. We have tried to include the magnet power supplies but found difficulties in treating old power supplies having large fluctuations of read-out values of their excitation currents in an appropriate manner. Our trials to overcome this problem will be presented.  
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About • paper received ※ 27 September 2019       paper accepted ※ 10 October 2019       issue date ※ 30 August 2020  
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