Author: Huang, J.Y.
Paper Title Page
S12FC05 PLS Beam Position Measurement and Feedback System 427
 
  • J.Y. Huang, J.-H. Kim, J.-W. Lee, M.K. Park, S.C. Won
    PAL, Pohang, Republic of Korea
  
  Funding: Work supported by Pohang Iron & Steel Co., Ltd. (POSCO) and Ministry of Science and Technology (MOST), Government of Republic of Korea.
A real-time orbit cor­rec­tion sys­tem is pro­posed for the sta­bi­liza­tion of beam orbit and pho­ton beam po­si­tions in Po­hang Light Source. PLS beam po­si­tion mon­i­tor sys­tem is de­signed to be VME­bus com­pat­i­ble to fit the real-time dig­i­tal orbit feed­back sys­tem. A VME­bus based sub­sys­tem con­trol com­puter, Mil-1553B com­mu­ni­ca­tion net­work and 12 BPM/PS ma­chine in­ter­face units con­sti­tute dig­i­tal part of the feed­back sys­tem. With the su­per-sta­ble PLS cor­rec­tion power sup­ply, power line fre­quency noise is al­most fil­tered out and the dom­i­nant of beam orbit fluc­tu­a­tions are ex­pected to ap­pear below 15 Hz. DSP board in SCC for the com­pu­ta­tion and using an ap­pro­pri­ate com­pen­sa­tion cir­cuit for the phase delay by the vac­uum cham­ber, PLS real-time orbit cor­rec­tion sys­tem is re­al­iz­able with­out chang­ing the basic struc­ture of PLS com­puter con­trol sys­tem. 		 
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S12FC05  
About • Received ※ 02 December 1991 — Accepted ※ 02 January 1992 — Issued ※ 04 December 1992  
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)