Author: Patsouli, A.
Paper Title Page
MOPGF135 Upgrade of the Trigger Synchronisation and Distribution System of the Beam Dumping System of the Large Hadron Collider 397
 
  • N. Magnin, A. Antoine, E. Carlier, V. Chareyre, S. Gabourin, A. Patsouli, N. Voumard
    CERN, Geneva, Switzerland
  
  Var­i­ous up­grades were per­formed on the Large Hadron Col­lider (LHC) Beam Dump­ing Sys­tem (LBDS) dur­ing Long Shut­down 1 (LS1) at CERN, in par­tic­u­lar to the Trig­ger Syn­chro­ni­sa­tion and Dis­tri­b­u­tion Sys­tem (TSDS): A re­dun­dant di­rect con­nec­tion from the LHC Beam In­ter­lock Sys­tem to the re-trig­ger lines of the LBDS was im­ple­mented, a fully re­dun­dant pow­er­ing ar­chi­tec­ture was set up, and new Trig­ger Syn­chro­ni­sa­tion Unit cards were de­ployed over two sep­a­rate crates in­stead of one. These hard­ware changes im­plied the adap­ta­tion of the State Con­trol and Sur­veil­lance Sys­tem and an im­prove­ment of the mon­i­tor­ing and di­ag­no­sis sys­tems, like the var­i­ous In­ter­nal Post Op­er­a­tion Check (IPOC) sys­tems that en­sure that, after every beam dump event, the LBDS worked as ex­pected and is 'as good as new' for the next LHC beam. This paper sum­marises the changes per­formed on the TSDS dur­ing LS1, high­lights the up­grade of the IPOC sys­tems and pre­sents the prob­lems en­coun­tered dur­ing the com­mis­sion­ing of TSDS be­fore the LHC Run II.  
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