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Lee, J. W.

Paper Title Page
WPPA16 Upgrade of BPM Data Acquisition System Using Reflective Memory at PLS 348
  • J. Choi, K. M. Ha, H.-S. Kang, E.-H. Lee, J. C. Yoon, J. W. Lee
    PAL, Pohang, Kyungbuk
  We upgraded the BPM data acquisition system of the PLS 2.5-Gev storage ring with the use of RFM (Reflective Memory). Our present BPM data acquisition system is based on EPICS VME IOC. It uses an analog-to-digital converter with 16-bit resolution and a 100-KHz conversion rate to digitize BPM raw electric signals. To get better position data from the digitized raw BPM data, we developed BPM data-averaging software utilizing RFM. With this averaging software, we could average 4000 samples of raw BPM data with the refresh rate of 2 seconds and get much better position data compared with the previous one. We installed data-averaging software and reflective memory modules into 12 local BPM IOCs for the routine operation. We are also planning to develop a fast global feedback system using RFM to improve beam quality in the near future.  
WPPA25 Remote Monitoring System for Current Transformers and Beam Position Monitors of PEFP 368
  • Y.-S. Cho, H. S. Kim, H.-J. Kwon, Y.-G. Song, I.-S. Hong
    KAERI, Daejon
  • J. W. Lee
    PAL, Pohang, Kyungbuk
  PEFP(Proton Engineering Frontier Project) in Korean proton linear accelerator program has a diagnostic system with current transformers and beam position monitors. Prototype of current transformer(CT) and beam position monitor(BPPM) were made and tested successfully in tools of the beam diagnostic systems. We are preparing to monitor remotely signals from the diagnostic system. Remote monitoring system is based on VME system with EPICS environments. For fast digitizing the analog signals VME ADC Input Output Board (VTR812/10) are used to meet the various needs of beam diagnosis device. EPICS channel access and drivers have been programmed in VME CPU to operate the Input output controller(IOC) and interface operators. Operator console and data storage have been implemented with EDM and channel archiver as well.  
WPPA37 Developing of SMS Mobile System for the PLS Control System 392
  • J. Choi, H.-S. Kang, J. W. Lee, B. R. Park, J. C. Yoon
    PAL, Pohang, Kyungbuk
  The PLS SMS mobile system is based on Linux PC platform. The SMS mobile system is equipped with a wireless SMS(Simple Message Service) interface giving an opportunity to use fault alarm interlock system. It was developed as a network-based distributed real-time control system composed of several subsystems (EPICS IOC and PLC system). The mobile system sends simple message of fault trip signal to users’ mobile devices with fault tag address and immediately sends warning or alert messages to mobile devices, or remote users are real-time monitoring the device fault states by mobile devices. Control systems can be set remotely by mobile devices in emergency situation. In order to provide suitable actions against system fault, SMS Mobile System will enable system administrator to promptly access, monitor and control the system whenever users want and wherever users are, by utilizing wireless Internet and mobile devices. This paper presents the Mobile SMS system for PLS Control System.