Author: Harryman, D.M.
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TUPA14 Beam Loss Monitoring in the ISIS Synchrotron Main Dipole Magnets 236
  • D.M. Harryman, S.A. Fisher, W.A. Frank, B. Jones, A. Pertica, D.W. Posthuma de Boer, C.C. Wilcox
    STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
  Beam loss monitoring at the ISIS Neutron and Muon Source is primarily carried out with the use of gas ionisation chambers filled with argon. These chambers are 3 to 4m long and are positioned around the inside of the synchrotron as well as along the ISIS Linac and Extracted Proton Beamlines (EPBs). To achieve finer spatial resolution a programme has been implemented to install six scintillator Beam Loss Monitors (BLMs), each 300 mm long, inside each of the ten main dipole magnets. Using these scintillator BLMs the accelerator can be fine-tuned during set-up to reduce areas of beam loss that were previously unseen or hard to characterise. As the installation programme comes to an end, this paper will review: the installation of the scintillator BLMs, the electronic hardware and software used to control them, and the initial measurements that have been taken using them.  
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