Author: Omet, C.
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MOPOY055 Technologies for Stabilizing the Dynamic Vacuum and Charge Related Beam Loss in Heavy Ion Synchrotrons 977
  • P.J. Spiller, L.H.J. Bozyk, C. Omet, I. Pongrac, St. Wilfert
    GSI, Darmstadt, Germany
  With increasing the intensities of heavy ion beams in synchrotrons, charge related beam loss become more and more significant. In order to reduce space charge forces and to minimize the incoherent tune spread, the charge state of heavy Ions shall be lowered. Thus the cross section for charge related beam loss is further enhanced. For the FAIR project, GSI has developed a number of different technologies to stabilize the dynamic residual gas pressure and thereby to minimize charge related beam loss at high intensity heavy ion operation. Technologies suitable for such issues are, dedicated lattice structures, cold and warm ion catchers, NEG coated and cryogenic magnet chambers and cryo-adsorption pumps.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPOY055  
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THPOY032 The Dual Use of Beam Loss Monitors at FAIR-SIS100: General Diagnostics and Quench Prevention of Superconducting Magnets 4167
  • S. Damjanovic, P. Kowina, C. Omet, M. Sapinski, M. Schwickert, P.J. Spiller
    GSI, Darmstadt, Germany
  In view of the planned coverage of the FAIR-SIS100 synchrotron with beam loss monitors (BLMs), FLUKA studies were performed aiming at two goals: i) evaluation of the sensitivity of the LHC-IC type detectors to the potential beam losses at SIS100; ii) estimation of the BLM quench prevention threshold via the correlation between the energy deposition inside the superconducting coils and the BLM active volume. A full spectrum of ion species and energies to be accelerated with SIS100 were considered in the simulations, showing a great sensitivity to the beam losses. An interesting finding of this study was that, for the same beam loss location, the quench prevention thresholds were almost identical for all ion species/energies including protons.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOY032  
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THPOY033 SIS100 Availability and Machine Protection 4171
  • C. Omet, H. Kisker, M.S. Mandakovic, D. Ondreka, P.J. Spiller, R.J. Steinhagen
    GSI, Darmstadt, Germany
  For the future FAIR driver accelerator, SIS100, a detailed System-FMEA (Failure Modes and Effects Analysis) according to IEC 61508 has been done. One the one hand, this has been done to identify possible shortcomings for machine protection and on the other hand to predict the machine's availabilty for beam on target. The methodology for the analysis and the main failure modes currently known for the machine and its environment are described in detail. An estimate of the total machine's availability is given.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOY033  
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