Author: Kersevan, R.
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TUPVA004 Synchrotron Radiation Backgrounds for the FCC-hh Experiments 2031
 
  • F. Collamati
    INFN-Roma1, Rome, Italy
  • M. Boscolo
    INFN/LNF, Frascati (Roma), Italy
  • H. Burkhardt, R. Kersevan
    CERN, Geneva, Switzerland
 
  Funding: This work was supported by the HORIZON 2020 project EuroCirCol, grant agreement 654305.
We present in this paper a detailed analysis of the synchrotron radiation emitted by the 50 TeV protons of the FCC-hh in the last bending and quadrupole magnets upstream the interaction region. We discuss the characteristics of this radiation in terms of power, flux, photon spectrum and fans in different running conditions such as, for example, with and without crossing angle. We mainly focus our study on the fraction of photons that may hit the detector, with a full tracking into GEANT4 that simulates their interaction within the central beam pipe.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPVA004  
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TUPVA011 Comparing Behaviour of Simulated Proton Synchrotron Radiation in the Arcs of the LHC with Measurements 2059
 
  • G. Guillermo Cantón, M. Ady, R. Kersevan, F. Zimmermann
    CERN, Geneva, Switzerland
  • M. Angelucci, R. Cimino, E. La Francesca
    INFN/LNF, Frascati (Roma), Italy
  • D. Sagan
    Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
 
  Funding: EuCARD2 CONACyT
In previous work it was shown that at high proton-beam energies, synchrotron radiation is an important source of beam-screen heating, of beam-related vacuum pressure increase, and of primary photoelectrons, which can contribute to electron cloud formation. We have used the Synrad3D code developed at Cornell to simulate the photon distributions in the arcs of the LHC, HL-LHC, and FCC-hh. Specifically, for the LHC we studied the effect of the sawtooth chamber. In this paper specific results of the Synrad3D simulations are compared with simulations in Synrad+, developed at CERN; and later on compared with experimental data for actual LHC vacuum-chamber samples.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-TUPVA011  
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