A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z  

Mikawa, K.

Paper Title Page
WEP082 Embedded EPICS Controller for KEKB Pulsed Quadrupole Magnet Power Supply 558
 
  • K. Mikawa, K. Furukawa, T. Mimashi, J.-I. Odagiri
    KEK, Ibaraki
  • T. Nakamura
    MELCO SC, Tsukuba
 
  The pulsed quadrupole magnets have been installed in KEKB for the betatron tune adjustment. These magnets need to be controlled by the existing EPICS-based control system of the KEKB accelerator. While the control logic required for the operation of the magnet power supplies is rather conventional, it is preferable that we choose a front-end controller which allows us to develop and maintain the software in a highly efficient manner to cope with limited human resources. In order to satisfy this requirement, a new type of Input / Output Controller (IOC), which runs Linux on a CPU module of FA-M3 Programmable Logic Controller (PLC), has been adopted. The CPU functions with normal I/O modules of FA-M3 on the PLC-bus. We found that replacing ladder programs with EPICS sequencer makes the development and maintenance of the software for the IOC considerably efficient. This paper describes the details of the new IOC and its experiences in KEKB operation including long term stability.  
THD005 Application of EPICS on F3RP61 to Accelerator Control 916
 
  • J.-I. Odagiri, S. Araki, K. Furukawa, N. Kamikubota, A. Kiyomichi, K. Mikawa, S. Murasugi, H. Nakagawa, T. T. Nakamura, S. Yamada, N. Yamamoto
    KEK, Ibaraki
  • K. Kameda, T. Natsui, H. Shiratsu
    Yokogawa, Tokyo
  • M. Komiyama
    RIKEN Nishina Center, Wako
  • S. Motohashi, M. Takagi
    Kanto Information Service (KIS), Accelerator Group, Ibaraki
  • N. Nagura
    Nippon Advanced Technology Co. Ltd., Ibaraki-prefecture
  • T. Nakamura
    MELCO SC, Tsukuba
  • A. Uchiyama
    SHI Accelerator Service ltd., Tokyo
 
  A new type of Input / Output Controller (IOC) has been developed based on F3RP61, a CPU module of FA-M3 Programmable Logic Controller (PLC). Since the CPU module runs Linux as its operating system, it takes no special effort to run EPICS IOC core program on the CPU module. With the aid of wide variety of I/O modules of FA-M3 PLC, the F3RP61-based IOC has various applications in accelerator control, such as magnet power supply control, monitoring interlock system, stepping motor control, data acquisition from beam monitors and so forth. The adoption of the new IOC makes the architecture of accelerator control systems simpler by unifying the two layers of front-end computers, i.e., the IOC layer and the PLC layer, into one layer. We found that the simplification of the control system architecture helps us to reduce the time and cost for the development and maintenance of the application software.