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Khasbulatov, D.

Paper Title Page
TUPEB066 Injection Beam Loss and Beam Quality Checks for the LHC 1671
 
  • B. Goddard, V. Baggiolini, W. Bartmann, C. Bracco, L.N. Drosdal, E.B. Holzer, V. Kain, D. Khasbulatov, N. Magnin, M. Meddahi, A. Nordt, M. Sapinski
    CERN, Geneva
  • M. Vogt
    DESY, Hamburg
  
 

The qual­i­ty of the in­jec­tion into the LHC is mon­i­tored by a ded­i­cat­ed soft­ware sys­tem which ac­quires and anal­y­ses the pulse wave­forms from the in­jec­tion kick­ers, and mea­sures key beam pa­ram­e­ters and com­pares them with the nom­i­nal ones. The beam loss­es at in­jec­tion are mon­i­tored on many crit­i­cal de­vices in the in­jec­tion re­gions, to­geth­er with the lon­gi­tu­di­nal fill­ing pat­tern and max­i­mum tra­jec­to­ry off­set on the first 100 turns. The paper de­scribes the in­jec­tion qual­i­ty check sys­tem and the re­sults from LHC beam com­mis­sion­ing, in par­tic­u­lar the beam loss­es mea­sured dur­ing in­jec­tion at the var­i­ous aper­ture lim­its. The re­sults are ex­trap­o­lat­ed to full in­ten­si­ty and the con­se­quences are dis­cussed.