Author: Hendrickson, L.
Paper Title Page
S12FC02 Generalized Fast Feedback System in the SLC 414
 
  • L. Hendrickson, S. Allison, T. Gromme, T.M. Himel, K.E. Krauter, R.C. Sass, H. Shoaee
    SLAC, Menlo Park, California, USA
  • F. Rouse
    UCD, Davis, California, USA
  
  Funding: Work supported by Department of Energy contract DE-AC03-76SF00515.
A gen­er­al­ized fast feed­back sys­tem has been de­vel­oped to sta­bi­lize beams at var­i­ous lo­ca­tions in the SLC. The sys­tem is de­signed to per­form mea­sure­ments and change ac­tu­a­tor set­tings to con­trol beam states such as po­si­tion, angle and en­ergy on a pulse to pulse basis. The soft­ware de­sign is based on the state space for­mal­ism of dig­i­tal con­trol the­ory. The sys­tem is data­base-dri­ven, fa­cil­i­tat­ing the ad­di­tion of new loops with­out re­quir­ing ad­di­tional soft­ware. A com­mu­ni­ca­tions sys­tem, KISNet, pro­vides fast com­mu­ni­ca­tions links be­tween mi­cro­proces­sors for feed­back loops which in­volve mul­ti­ple mi­cros. Feed­back loops have been in­stalled in sev­en­teen lo­ca­tions through­out the SLC and have proven to be in­valu­able in sta­bi­liz­ing the ma­chine. 		 
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S12FC02  
About • Received ※ 10 October 1991 — Accepted ※ 02 January 1992 — Issued ※ 04 December 1992  
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
S13MMI13 Correlation Plot Facility in the SLC Control System 493
 
  • L. Hendrickson, S. Clark, N. Phinney, L. Sanchez-Chopitea
    SLAC, Menlo Park, California, USA
  
  Funding: Work supported by Department of Energy contract DE-AC03-76SF00515.
The Cor­re­la­tion Plot fa­cil­ity is a pow­er­ful in­ter­ac­tive tool for data ac­qui­si­tion and analy­sis through­out the SLC. This gen­er­al­ized in­ter­face al­lows the user to per­form a range of op­er­a­tions or ma­chine physics ex­per­i­ments with­out the need for any spe­cial­ized analy­sis soft­ware. The user may step one or more in­de­pen­dent pa­ra­me­ters, such as mag­net or feed­back set­points, while mea­sur­ing or cal­cu­lat­ing up to 160 other pa­ra­me­ters. Mea­sured vari­ables in­clude all ana­log sig­nals avail­able to the con­trol sys­tem, as well as cal­cu­lated pa­ra­me­ters such as beam size, lu­mi­nos­ity, or emit­tance. Var­i­ous fit­ting al­go­rithms and dis­play op­tions are pro­vided. A soft­ware-callable in­ter­face has been pro­vided so that a host of ap­pli­ca­tions can call this pack­age for analy­sis and dis­play. Such ap­pli­ca­tions reg­u­larly phase kly­strons, mea­sure emit­tance and dis­per­sion, min­i­mize beam size, and main­tain beam col­li­sions at the in­ter­act ion point. 		 
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI13  
About • Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992  
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)