Author: Hofer, M.
Paper Title Page
MOPAB130 Cross-Calibration of the LHC Transverse Beam-Profile Monitors 437
 
  • R. Alemany-Fernández, F. Alessio, A. Alexopoulos, C. Barschel, F.S. Carlier, J.M. Coello de Portugal, M. Ferro-Luzzi, A. Garcia-Tabares, M. Hostettler, O. Karacheban, E.H. Maclean, R. Matev, T. Persson, P.K. Skowroński, R. Tomás, G. Trad, S. Vlachos, B. Würkner
    CERN, Geneva, Switzerland
  • G.R. Coombs
    EPFL, Lausanne, Switzerland
  • T.B. Hadavizadeh
    Oxford University, Physics Department, Oxford, Oxon, United Kingdom
  • M. Hofer
    TU Vienna, Wien, Austria
  • L. van Riesen-Haupt
    University of Oxford, Oxford, United Kingdom
 
  Calibration of a transverse beam profile monitor is of fundamental importance to guarantee the best possible accuracy and reliability of the instrument over time. In LHC the calibration standard for transverse-profile measurements are the wire scanners. Other profile monitors such as beam synchrotron light telescopes and interferometers are calibrated with respect to them. Additional information about single-bunch sizes can be obtained from beam-gas imaging in the LHCb vertex detector, from the transverse convolved beam sizes extracted from luminosity scans at the collision points, and from the evolution of the luminous-region parameters as reconstructed by ATLAS and CMS inner tracker detectors during such scans. For the first time in LHC, a dedicated cross-calibration of all the above-mentioned systems was carried out with beam in 2016. Additionally, dedicated optics measurements were also performed in order to determine with the highest possible accuracy the amplitude function at the interaction points and at the position of the profile monitors. Results of these measurements are presented in this paper.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2017-MOPAB130  
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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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