Author: Sato, H.
Paper Title Page
S04SRS07 Multi-Microprocessor Control of the Main Ring Magnet Power Supply of the 12 GeV KEK Proton Synchrotron 180
 
  • T. Sueno, K. Mikawa, M. Toda, T. Toyama, H. Sato, S. Matsumoto
    KEK, Tokyo, Japan
  
  A gen­eral de­scrip­tion of the com­puter con­trol sys­tem of the KEK 12 GeV PS main ring mag­net power sup­ply is given, in­clud­ing its pe­riph­eral de­vices. The sys­tem con­sists of the main HIDIC-V90/2S CPU and of the input and out­put con­trollers HISEC-04M. The main CPU, su­per­vised by UNIX, pro­vides the man-ma­chine in­ter­fac­ing and im­ple­ments the repet­i­tive con­trol al­go­rithm to cor­rect for any mag­net cur­rent de­vi­a­tion from ref­er­ence. Two sub-CPU’s are linked by a LAN and sup­ported by a real time multi-task mon­i­tor. The out­put process con­troller dis­trib­utes the con­trol pat­terns to 16-bit DAC’s, at 1.67 ms clock pe­riod in syn­chro­nism with the 3-phase ac line sys­tems. The input con­troller logs the mag­net cur­rent and volt­age, via 16-bit ADC’s at the same clock rate.  
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S04SRS07  
About • Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992  
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