Author: Jacquet, D.
Paper Title Page
WEPMU011 Automatic Injection Quality Checks for the LHC 1077
 
  • L.N. Drosdal, B. Goddard, R. Gorbonosov, S. Jackson, D. Jacquet, V. Kain, D. Khasbulatov, M. Misiowiec, J. Wenninger, C. Zamantzas
    CERN, Geneva, Switzerland
  
  Twelve in­jec­tions per beam are re­quired to fill the LHC with the nom­i­nal fill­ing scheme. The in­ject­ed beam needs to ful­fill a num­ber of re­quire­ments to pro­vide use­ful physics for the ex­per­i­ments when they take data at col­li­sions later on in the LHC cycle. These re­quire­ments are checked by a ded­i­cat­ed soft­ware sys­tem, called the LHC in­jec­tion qual­i­ty check. At each in­jec­tion, this sys­tem re­ceives data about beam char­ac­ter­is­tics from key equip­ment in the LHC and an­a­lyzes it on­line to de­ter­mine the qual­i­ty of the in­ject­ed beam after each in­jec­tion. If the qual­i­ty is in­suf­fi­cient, the au­to­mat­ic in­jec­tion pro­cess is stopped, and the op­er­a­tor has to take cor­rec­tive mea­sures. This paper will de­scribe the soft­ware ar­chi­tec­ture of the LHC in­jec­tion qual­i­ty check and the in­ter­play with other sys­tems. A set of tools for self-mon­i­tor­ing of the in­jec­tion qual­i­ty checks to achieve op­ti­mum per­for­mance will be dis­cussed as well. Re­sults ob­tained dur­ing the LHC com­mis­sion­ing year 2010 and the LHC run 2011 will fi­nal­ly be pre­sent­ed.  
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