Author: Gabourin, S.G.
Paper Title Page
WEPAF088 Machine Protection Features of the ESS Beam Current Monitor System 2058
  • H. Hassanzadegan, E. Bargalló, S.G. Gabourin, T. Korhonen, S. Kövecses de Carvalho, A. Nordt, T.J. Shea
    ESS, Lund, Sweden
  • M. Mohammednezhad
    Sigma Connectivity Engineering, Lund, Sweden
  • M. Werner
    DESY, Hamburg, Germany
  The BCM system of the European Spallation Source includes several machine protection features to ensure that the actual beam parameters will be consistent with the selected beam and destination modes. Differential current measurements with several ACCT pairs are foreseen to detect beam losses particularly in the low-energy linac where Beam Loss Monitors cannot be used. The ACCTs will also be used to check that no beam will be present in the sections downstream of a temporary beam dump. These measurements will then be used to stop the beam shortly after an abnormal condition has been detected by the BCM system. This will require some customized interfaces with the Timing System and the Machine Protection System as well as an optical interface for differential current measurement over large distances. Automatic setting of the machine protection thresholds and masking/unmasking of the interlocks based on the beam and destination modes are among the technical complexities. This paper gives an overview of the design including the most recent updates and discusses in more details the machine protection features of the BCM system.  
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