Keyword: emittance
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S01SRA04 Lessons from the SLC for Future LC Control Systems controls, feedback, collider, machine-protect 14
 
  • J. Humphrey
    SLAC, Menlo Park, California, USA
  
  Funding: Work supported by the U.S. Department of Energy contratc DE-AC03-76SF00515.
The SLC con­trol sys­tem is the dy­namic re­sult of a num­ber of forces. The most ob­vi­ous force is the func­tional re­quire­ments of the SLC it­self, but other forces are his­tory, bud­get, peo­ple, avail­able tech­nol­ogy, etc. The plan of this paper is to de­scribe the crit­i­cal func­tional re­quire­ments of the SLC which caused sig­nif­i­cant de­vel­op­ment of the con­trol sys­tem. I have tried to focus on func­tional re­quire­ments as a dri­ver, and I will de­scribe some so­lu­tions which we have im­ple­mented to sat­isfy those re­quire­ments. The im­por­tant func­tional re­quire­ments dri­vers for the con­trol sys­tem dis­cussed in this paper are: Rep­e­ti­tion rate, Sen­si­tiv­ity to orbit dis­tor­tion, Sta­bil­ity/Au­toma­tion, and Ac­cel­er­a­tor De­vel­op­ment 		 
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S01SRA04  
About • Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992  
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S13MMI14 Iconic Representation of Particle Beams Using Personal Computers controls, interface, Windows, ion-effects 496
 
  • S. Dasgupta, C. Mallik, D. Sarkar
    VECC, Kolkata, India
  
  The idea of rep­re­sent­ing the char­ac­ter of a charged par­ti­cle beam by means of its emit­tance el­lipses, is es­sen­tially a math­e­mat­i­cal one. For quick un­der­stand­ing of the beam char­ac­ter in a more user-friendly way, unit beam cells with par­ti­cles hav­ing a uni­form na­ture, have been pic­tured by suit­ably shaped 3-D solids. The X and Y di­rec­tion mo­menta at par­tic­u­lar cell areas of the par­ti­cle beam com­bine to­gether to give a pro­por­tion­ate ori­en­ta­tion to the solid in the pseudo 3-D world of the graphic screen, cre­at­ing a phys­i­cal pic­ture of the par­ti­cle beam. This is ex­pected to fa­cil­i­tate the com­pre­hen­sion of total char­ac­ter­is­tics of a beam in cases of on­line con­trol of trans­port lines and their de­signs, when in­ter­faced with var­i­ous ray-trac­ing pro­grams. The im­ple­men­ta­tion is done in an IBM-PC en­vi­ron­ment.  
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI14  
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)  
 
S18BPA03 New Controls for the CERN-PS Hadron Injection Process Using Operating Tools and High-Level Accelerator Modelling Programmes injection, controls, betatron, timing 583
 
  • M. Arruat, M. Boutheon, L. Cons, Y. Deloose, F. Di Maio, D. Gueugnon, R. Hoh, M. Martini, K. Priestnall, J.P. Riunaud
    CERN, Meyrin, Switzerland
  
  A new con­trol sys­tem using man-ma­chine in­ter­face tools with work­sta­tions as con­soles has been suc­cess­fully put into op­er­a­tion for the in­jec­tion of hadrons in the CERN Pro­ton Syn­chro­tron (PS). This paper mainly fo­cuses on spe­cial­ized mod­el­ling pro­grammes in­volv­ing com­plex treat­ments for an op­ti­mum op­er­a­tion of the in­jec­tion process. These pro­grammes in­clude the con­trol of the in­jec­tion tim­ings, the mea­sure­ment of the beam emit­tance with an es­ti­ma­tion of how well the in­com­ing beam is matched, and the cor­rec­tion of os­cil­la­tions at in­jec­tion. The in­fra­struc­ture and the pro­gram­ming en­vi­ron­ment un­der­lay­ing the new con­trol sys­tem are de­scribed else­where 3¿ The out­stand­ing fea­ture of the in­ter­nal struc­ture of all these mod­el­ling pro­grammes is that they carry out three kinds of data in­ter­ac­tion: the input, that is the mea­sure­ments (e.g. beam time po­si­tions, pro­files and tra­jec­to­ries), the phys­i­cal pa­ra­me­ters (e.g. re­quired times for syn­chro­niza­tion, beam emit­tance, beam space po­si­tion and angle at in­jec­tion), and the out­put, mainly the hard­ware val­ues (e.g. pre­set counter set­tings, cur­rents to apply to in­jec­tion steer­ing mag­nets).  
DOI • reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S18BPA03  
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)