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beam-losses

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IT03 Beam Loss Monitors at the ESRF vacuum, radiation, injection, synchrotron 3
 
  • B. Joly, U. Weinrich, G.A. Naylor
    ESRF, The European Synchrotron Radiation Facility, Grenoble, France
  The European Synchrotron radiation facility is a third generation x-ray source providing x-rays on a continuous basis. As a facility available to external users, the monitoring of radiation caused by the loss of high-energy stored beam is of great concern. A network of beam loss monitors has been installed inside the storage ring tunnel so as to detect and localize the slow loss of electrons during a beam decay. This diagnostic tool allows optimization of beam parameters and physical aperture limits as well as giving useful information on the machine to allow the lifetime to be optimized and defects localized.  
 
PS14 Comparative test results of various beam loss monitors in preparation for LHC proton, ion, simulation, electron 132
 
  • J. Bosser, G. Ferioli
    CERN, Geneva, Switzerland
  Beam loss detectors will play an important role in the protection of the superconducting LHC magnets. Different types of detectors have been tested in the SPS ring and secondary beam lines with a view to their possible use for this application. This paper describes the measurements made with: microcalorimeters at cryogenic temperatures, PIN diodes, ionisation chambers, scintillators, and ACEMs. Measurements made using proton beams showing their relative sensitivities, linearities in counting or analog mode and minimum detection level will be presented.  
 
PT08 A fast protection system for narrow-gap insertion device vessels monitoring, insertion, insertion-device, injection 174
 
  • M.J. Dufau, R.J. Smith
    CLRC, Daresbury Laboratory, Warrington, UK
  Presented in this paper are details of an electronic, beam position based interlock system, which has been designed to protect narrow - gap insertion device vessels from the thermal damage that would result from mis steered beam. Details of system design and operational experience are presented, and the paper concludes with an outline proposal for a system enhancement, that would offer diagnostic information immediately prior to an excessive beam displacement trip.