Author: Borburgh, J.
Paper Title Page
MOPRO030 Changes to the LHC Beam Dumping System for LHC Run 2 134
 
  • J.A. Uythoven, M.G. Atanasov, J. Borburgh, E. Carlier, S. Gabourin, B. Goddard, N. Magnin, V. Senaj, N. Voumard, W.J.M. Weterings
    CERN, Geneva, Switzerland
 
  The LHC beam dumping system performed according to expectations during Run 1 of the LHC (2009 – 2013). A brief overview of the experience is given, including a summary of the observed performance in comparison to expectations. An important number of changes are applied to the beam dumping system during the present Long Shutdown on order to further improve its system safety and performance. They include the addition of a direct link between the Beam Interlock System and the re-triggering system of the dump kickers, the modification of the uninterrupted electrical power distribution architecture, the upgrade of the HV generators, the consolidation of the trigger synchronization system, the modifications to the triggering system of the power switches and the changes to the dump absorbers TCDQ.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRO030  
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MOPME076 Upgrade of the SPS Injection Kicker System for LHC High Luminosity Operation with Heavy Ion Beam 547
 
  • T. Kramer, J. Borburgh, L. Ducimetière, B. Goddard, L. Sermeus, J.A. Uythoven, F.M. Velotti
    CERN, Geneva, Switzerland
 
  In the context of the LHC High Luminosity Upgrade project a performance upgrade for heavy ions is envisaged. One of the performance limitations is the rise time of the present SPS injection kicker system MKP. A reduction of the rise time for lead ions was studied in line with a modification of the whole injection system. This paper briefly describes the different rise time options studied for an initially proposed dedicated ion kicker system MKP-I, focuses however on a cost effective alternative using the presently installed 12 MKPS magnets connected to a new fast pulse forming line. As only 12 out of the 16 injection kicker magnets would be fast enough to be used in an upgraded system, additional deflection has to be provided by the septa. The beam optics for that variant is highlighted and first requirements for the septum elements are stipulated. The paper concludes with a failure analysis of the proposed scheme.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPME076  
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MOPRI101 Field Simulations and Mechanical Implementation of Electrostatic Elements for the ELENA Transfer Lines 855
 
  • D. Barna
    University of Tokyo, Tokyo, Japan
  • W. Bartmann, J. Borburgh, C. Carli, G. Vanbavinckhove
    CERN, Geneva, Switzerland
 
  The Antiproton Decelerator (AD) complex at CERN will be extended by an extra low energy anti-proton ring (ELENA) further decelerating the anti-protons thus improving their trapping. The kinetic energy of 100 keV at ELENA extraction facilitates the use of electrostatic transfer lines to the experiments. The mechanical implementation of the electrostatic devices are presented with focus on their alignment, bakeout compatibility, ultra-high vacuum compatibility and polarity switching. Field optimisations for an electrostatic crossing device of three beam lines are shown.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPRI101  
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TUPRI027 Detailed Magnetic Model Simulations of the H Injection Chicane Magnets for the CERN PS Booster Upgrade, including Eddy Currents, and Influence on Beam Dynamics 1618
 
  • E. Benedetto, B. Balhan, J. Borburgh, C. Carli, V. Forte, M. Martini
    CERN, Geneva, Switzerland
  • V. Forte
    Université Blaise Pascal, Clermont-Ferrand, France
 
  The CERN PS Booster will be upgraded with an H injection system. The chicane magnets for the injection bump ramp-down in 5 ms and generate eddy currents in the inconel vacuum chamber which perturb the homogeneity of the magnetic field. The multipolar field components are extracted from 3D OPERA simulations and are included in the lattice model. The beta-beating correction is computed all along the ramp and complete tracking simulations including space-charge are performed to evaluate the impact of these perturbations and their correction.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-TUPRI027  
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THPME072 Delivery of Special Magnets for the MedAustron Project 3403
 
  • T. Kramer, M.G. Atanasov, R.A. Barlow, M.J. Barnes, J. Borburgh, L. Ducimetière, T. Fowler, M. Hourican, V. Mertens, A. Prost
    CERN, Geneva, Switzerland
  • T. Stadlbauer
    EBG MedAustron, Wr. Neustadt, Austria
 
  Ten different types of kickers, bumpers, and electrostatic and magnetic septa, along with certain power supplies and associated control system components, have been designed in a collaboration between CERN and MedAustron for an ion therapy centre in Wr. Neustadt (Austria). This paper focuses on the status of the special magnets work package and the improvements applied during the production. The design parameters are compared with data from measurements, hardware tests and initial commissioning. The major factors contributing to the successful completion of the work package are highlighted.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPME072  
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