Author: Merker, S.
Paper Title Page
MOPGF102 The New Control Software for the CERN NA62 Beam Vacuum 314
 
  • S. Blanchard, F. Antoniotti, R. Ferreira, P. Gomes, A. Gutierrez, B. Jenninger, F. Mateo, H.F. Pereira
    CERN, Geneva, Switzerland
  • L. Kopylov, S. Merker
    IHEP, Moscow Region, Russia
  
  NA62 is a fixed tar­get ex­per­i­ment to mea­sure very rare de­cays of Kaons at CERN Super Pro­ton Syn­chro­tron ac­cel­er­a­tor. The NA62 ex­per­i­ment line com­prises sev­eral large de­tec­tors in­stalled in­side a vac­uum ves­sel with a length of 250 m and an in­ter­nal di­am­e­ter of up to 2.8 m. The vac­uum in­stal­la­tion con­sists of 170 re­mote con­trolled pumps, valves and gauges. The op­er­a­tional spec­i­fi­ca­tions of NA62 re­quire a com­plex vac­uum con­trol sys­tem: tight in­ter­ac­tion be­tween vac­uum con­trollers and de­tec­tor con­trollers, in­clud­ing pump­ing or vent­ing ve­toes, and de­tec­tor start-stop in­ter­locks; most of the valves are in­ter­locked, in­clud­ing the large vac­uum sec­tor gate valves; the vac­uum de­vices are dri­ven by 20 logic processes. The vac­uum con­trol sys­tem is based on com­mer­cial Pro­gram­ma­ble Log­i­cal Con­trollers (Siemens PLC: S7-300 se­ries) and a Su­per­vi­sory Con­trol And Data Ac­qui­si­tion ap­pli­ca­tion (Siemens SCADA: WINCC OA). The con­trol soft­ware is built upon the stan­dard frame­work used in CERN ac­cel­er­a­tors vac­uum, with some spe­cific de­vel­op­ments. We de­scribe the con­trols ar­chi­tec­ture, and re­port on the par­tic­u­lar re­quire­ments and the so­lu­tions im­ple­mented.  
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MOPGF104 Consolidations on the Vacuum Controls of the CERN Accelerators, During the First Long Shutdown of the LHC 322
 
  • P. Gomes, F. Antoniotti, F. Aragon, F. Bellorini, S. Blanchard, J-P. Boivin, N. Chatzigeorgiou, F. Daligault, R. Ferreira, J. Fraga, J. Gama, A. Gutierrez, P. Krakówski, H.F. Pereira, G. Pigny, P.P. Prieto, B. Rio, H. Vestergard
    CERN, Geneva, Switzerland
  • L. Kopylov, S. Merker, M.S. Mikheev
    IHEP, Moscow Region, Russia
  
  For two years (Spring 2013 - Spring 2015), the LHC went through its first long shut­down (LS1). It was mainly mo­ti­vated by the con­sol­i­da­tion of mag­net in­ter­con­nects, to allow op­er­a­tion with 6.5 TeV pro­ton beams. More­over, around the ac­cel­er­a­tor com­plex, many other sys­tems were re­paired, con­sol­i­dated or up­graded, and sev­eral new in­stal­la­tions came to life. The stan­dard­iza­tion of vac­uum con­trols has pro­gressed in the in­jec­tors, with the ren­o­va­tion of most of their ob­so­lete equip­ment. In the LHC, many new in­stru­ments were added, the sig­nal trans­mis­sion in­tegrity was im­proved, and the ex­po­sure to ra­di­a­tion was re­duced in crit­i­cal places. Sev­eral de­vel­op­ments were needed for new equip­ment types or new op­er­a­tional re­quire­ments.  
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