Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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EPICS Based Vacuum Chamber Temperature Control System for PAL Storage Ring

가속기 저장링 진공 챔버 온도측정용 제어시스템 개발 및 EPICS 적용

  • Yoon, J.C. (Pohang Accelerator Laboratory, POSTECH) ;
  • Choi, J.Y. (Pohang Accelerator Laboratory, POSTECH) ;
  • Kang, H.S. (Pohang Accelerator Laboratory, POSTECH)
  • 윤종철 (포항공대 포항가속기연구소) ;
  • 최진혁 (포항공대 포항가속기연구소) ;
  • 강흥식 (포항공대 포항가속기연구소)
  • Published : 2005.07.18
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Abstract

A vacuum chamber temperature control system of Pohang Accelerator Laboratory (PAL) storage ring is a subsystem upgraded PAL control system, which is based upon Experimental Physics and Industrial Control System (EPICS) [1]. There are two control components, data acquisition system (SA120 data logger), development control system IOC (Input/Output Controller) at the storage ring of PAL. There are 240 vacuum chamber at the storage ring. It was a very important problem to solve how to monitor such a large number of vacuum chamber temperature distributed around the ring. The IOC connect MODBUS/JBUS field network to asynchronous serial ports for communication with serial device. It can simultaneously control up to 4 data acquisition systems. Upon receiving a command from a IOC running under Windows2k through the network, the IOC communicate through the slave serial interface ports to SA120. We added some software components on the top of EPICS toolkit. The design of the vacuum control system is discussed. This paper describes the development vacuum chamber temperature control system and how the design of this system.

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