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Title HL-LHC Beam Gas Fluorescence Studies for Transverse Profile Measurement
  • O. Sedláček, M. Ady, C. Castro Sequeiro, A.R. Churchman, S. Mazzonipresenter, G. Schneider, K. Sidorowski, R. Veness
    CERN, Meyrin, Switzerland
  • P. Forck, S. Udrea
    GSI, Darmstadt, Germany
  • M. Sameed
    European Organization for Nuclear Research (CERN), Geneva, Switzerland
  • O. Sedláček, O. Stringer, C.P. Welsch, H.D. Zhang
    The University of Liverpool, Liverpool, United Kingdom
  • O. Sedláček, O. Stringer, C.P. Welsch, H.D. Zhang
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
Abstract In a gas jet monitor, a supersonic gas curtain is injected into the beam pipe and interacts with the charged particle beam. The monitor exploits fluorescence induced by beam-gas interactions, thus providing a minimally invasive transverse profile measurement. Such a monitor is being developed as part of the High Luminosity LHC upgrade at CERN. As a preliminary study, the fluorescence cross section of relevant gases must be measured for protons at 450 GeV and 6.8 TeV (i.e. the LHC injection and flat top energies). In these measurements, neon, or alternatively nitrogen gas, will be injected into the LHC vacuum pipe by a regulated gas valve to create an extended pressure bump. This work presents the optical detection system that was installed in 2022 in the LHC to measure luminescence cross-section and horizontal beam profile. Preliminary measurements of background light and first signals are presented in this paper.
Paper download TUP17.PDF [1.377 MB / 4 pages]
Poster download TUP17_POSTER.PDF [0.673 MB]
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Conference IBIC2022
Series International Beam Instrumentation Conference (11th)
Location Kraków, Poland
Date 11-15 September 2022
Publisher JACoW Publishing, Geneva, Switzerland
Editorial Board Peter Forck (GSI, Darmstadt, Germany); Adriana Wawrzyniak (SOLARIS, Kraków, Poland); Volker R.W. Schaa (GSI, Darmstadt, Germany); Grzegorz W. Kowalski (SOLARIS, Kraków, Poland); Agnieszka (SOLARIS Cudek (SOLARIS, Kraków, Poland)
Online ISBN 978-3-95450-241-7
Online ISSN 2673-5350
Received 07 September 2022
Revised 10 September 2022
Accepted 14 September 2022
Issue Date 21 November 2022
DOI doi:10.18429/JACoW-IBIC2022-TUP17
Pages 261-264
Creative Commons CC logoPublished by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.