Author: Rafique, H.
Paper Title Page
MOPAB013 Recent Development and Results With the Merlin Tracking Code 104
 
  • S.C. Tygier, R.B. Appleby, H. Rafique
    UMAN, Manchester, United Kingdom
  • R.J. Barlow, S. Rowan
    IIAA, Huddersfield, United Kingdom
  • J. Molson
    LAL, Orsay, France
  
  Funding: Work supported by High Luminosity LHC : UK (HL-LHC-UK), grant number ST/N001621/1
MERLIN is an high performance accelerator simulation code which is used for modelling the collimation system at the LHC. It is written in extensible object-oriented C++ so new physics processes can be easily added. In this article we present recent developments needed for the Hi-Lumi LHC and future high energy colliders including FCC, such as hollow electron lenses and composite materials. We also give an overview of recent simulation work, validation against LHC data from run 1 and 2, and loss maps for Hi-Lumi LHC. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB013  
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TUPIK037 Proton Cross-Talk and Losses in the Dispersion Suppressor Regions at the FCC-hh 1763
 
  • H. Rafique, R.B. Appleby
    UMAN, Manchester, United Kingdom
  • J.L. Abelleira
    JAI, Oxford, United Kingdom
  • A.M. Krainer, A. Langner
    CERN, Geneva, Switzerland
  
  Funding: The European Circular Energy-Frontier Collider Study (EuroCirCol), EU's Horizon 2020 grant No 654305
Protons that collide at the interaction points of the FCC-hh may contribute to the background in the subsequent detector. Due to the high luminosity of the proton beams this may be of concern. Using DPMJET-III to model 50 TeV proton-proton collisions, tracking studies have been performed with PTC and MERLIN in order to gauge the elastic and inelastic proton cross-talk. High arc losses, particularly in the dispersion suppressor regions, have been revealed. These losses originate mainly from particles with a momentum deviation, either from interaction with a primary collimator in the betatron cleaning insertion, or from the proton-proton collisions. This issue can be mitigated by introducing additional collimators in the dispersion suppressor region. The specific design, lattice integration, and the effect of these collimators on cross-talk is assessed. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPIK037  
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TUPVA036 Cross-Talk Studies between FCC-hh Experimental Interaction Regions 2136
 
  • J.L. Abelleira, A. Seryi
    JAI, Oxford, United Kingdom
  • R.B. Appleby, H. Rafique
    UMAN, Manchester, United Kingdom
  • M.I. Besana
    CERN, Geneva, Switzerland
  
  Funding: The European Circular Energy-Frontier Collider Study (EuroCirCol), EU's Horizon 2020 grant No 654305.
Debris from 50 TeV proton-proton collisions at the main interaction point in the FCC-hh may contribute to the background in the subsequent detector. This cross-talk is of possible concern for the FCC-hh due to the high luminosity and energy of the collider. DPMJET-III is used as a collision debris generator in order to assess the muon cross-talk contribution. An analytical calculation of muon range in rock is performed. This is followed by a full Monte Carlo simulation using FLUKA, where the accelerator tunnel has been modelled. The muon cross talk between the adjacent interaction points is assessed and its implications for FCC-hh design are discussed. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPVA036  
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TUPVA040 Overview of Design Development of FCC-hh Experimental Interaction Regions 2151
 
  • A. Seryi, J.L. Abelleira, E. Cruz Alaniz, L.J. Nevay, L. van Riesen-Haupt
    JAI, Oxford, United Kingdom
  • R.B. Appleby, H. Rafique
    UMAN, Manchester, United Kingdom
  • R.B. Appleby
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • J. Barranco García, T. Pieloni
    EPFL, Lausanne, Switzerland
  • M. Benedikt, M.I. Besana, X. Buffat, H. Burkhardt, F. Cerutti, A. Langner, R. Martin, W. Riegler, D. Schulte, R. Tomás
    CERN, Geneva, Switzerland
  • M. Boscolo, F. Collamati
    INFN/LNF, Frascati (Roma), Italy
  • M. Hofer
    TU Vienna, Wien, Austria
  • L.J. Nevay
    Royal Holloway, University of London, Surrey, United Kingdom
  • L. van Riesen-Haupt
    University of Oxford, Oxford, United Kingdom
  
  The experimental interaction region is one of the key areas that define the performance of the Future Circular Collider. In this overview we will describe the status and the evolution of the design of EIR of FCC-hh, focusing on design of the optics, energy deposition in EIR elements, beam-beam effects and machine detector interface issues.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPVA040  
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WEOBA1 A Comparison of Interaction Physics for Proton Collimation Systems in Current Simulation Tools 2478
 
  • J. Molson, A. Faus-Golfe
    LAL, Orsay, France
  • R.B. Appleby, S.C. Tygier
    UMAN, Manchester, United Kingdom
  • R.J. Barlow
    IIAA, Huddersfield, United Kingdom
  • R. Bruce, F. Cerutti, A. Ferrari, A. Mereghetti, S. Redaelli, K.N. Sjobak, V. Vlachoudis
    CERN, Geneva, Switzerland
  • H. Rafique
    University of Manchester, Manchester, United Kingdom
  • Y. Zou
    IHEP, Beijing, People's Republic of China
  
  Funding: The European Circular Energy-Frontier Collider Study (EuroCirCol) project has received funding from the European Union's Horizon 2020 research and innovation programme under grant No 654305.
High performance collimation systems are required for current and proposed high energy hadron accelerators in order to protect superconducting magnets and experiments. In order to ensure that the collimation system designs are sufficient and will operate as expected, precision simulation tools are required. This paper discusses the current status of existing collimation system tools, and performs a comparison between codes in order to ensure that the simulated interaction physics between a proton and a collimator jaw is accurate. 		 
slides icon Slides WEOBA1 [7.235 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-WEOBA1  
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