Author: Shetty, N.V.
Paper Title Page
TUPTY049 Protection of Superconducting Magnets in Case of Accidental Beam Losses during HL-LHC Injection 2128
 
  • A. Lechner, M.J. Barnes, C. Bracco, B. Goddard, F.L. Maciariello, A. Perillo Marcone, N.V. Shetty, G.E. Steele, J.A. Uythoven, F.M. Velotti
    CERN, Geneva, Switzerland
  • F.M. Velotti
    EPFL, Lausanne, Switzerland
  
  Funding: Research supported by the High Luminosity LHC project.
The LHC injection regions accommodate a system of beam-intercepting devices which protect superconducting magnets and other accelerator components in case of mis-steered injected beam or accidentally kicked stored beam, e.g. due to injection kicker or timing malfunctions. The brightness and intensity increase required by the High Luminosity (HL) upgrade of the LHC necessitates a redesign of some devices to improve their robustness and to reduce the leakage of secondary particle showers to downstream magnets. In this paper, we review possible failure scenarios and we quantify the energy deposition in superconducting coils by means of FLUKA shower calculations. Conceptual design studies for the new protection system are presented, with the main focus on the primary injection protection absorber (TDI) and the adjacent mask (TCDD). 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-TUPTY049  
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TUPTY051 Injection Protection Upgrade for the HL-LHC 2136
 
  • J.A. Uythoven, N. Biancacci, C. Bracco, L. Gentini, B. Goddard, A. Lechner, F.L. Maciariello, A. Perillo Marcone, B. Salvant, N.V. Shetty, G.E. Steele, F.M. Velotti
    CERN, Geneva, Switzerland
  • O. Frasciello, M. Zobov
    INFN/LNF, Frascati (Roma), Italy
  
  The injector complex of the LHC is undergoing important changes in the light of the LIU project to provide brighter beams to the LHC. For this reason and as part of the High Luminosity LHC project the injection protection system of the LHC will be upgraded in the Long Shutdown 2 (2018 - 2019) to be able to protect downstream elements against injection failures with the high brightness, high intensity HL-LHC beams. The upgraded LHC injection protection system will consist of a segmented injection protection absorber TDIS, and auxiliary collimators and masks. The layout modifications are described, and the machine element protection and absorber jaw robustness studies are presented for the new systems.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2015-TUPTY051  
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