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Rüdiger, F.

Paper Title Page
TUOCM03 Beam Loss Position Monitoring with Optical Fibres at DELTA 1032
 
  • F. Rüdiger, G. Schmidt, K. Wille
    DELTA, Dortmund
  • W. Goettmann
    HMI, Berlin
  • M. Koerfer
    DESY, Hamburg
 
  Detection of ionising radiation with optical fibres is used to localize beam losses. At DELTA three different systems are in use. Optical Time Domain Reflectometry (OTDR) is used to measure radiation doses along the full length of the storage ring vacuum chamber. Transmission measurement of optical fibre loops is used for surveillance of radiation sensitive objects like Undulator permanent magnets. Integration into the DELTA control system offers the possibility to react on increased doses within several minutes. Detection of Cerenkov radiation offers real-time beam loss position monitoring with single-bunch resolution of 2 ns. With up to four fibres mounted at different positions along the vacuum chamber spatial measurement of beam loss is used to increase injection efficiency.  
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