Contribution to a conference proceedings

GSI-2025-00430

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png HL-LHC Beam Gas Fluorescence Studies for Transverse Profile Measurement

Sedláček, O. (Corresponding author) ; Ady, M. ; Castro Sequeiro, C. ; Churchman, A. ; Forck, P.GSI* ; Mazzoni, S. ; Sameed, M. ; Schneider, G. ; Sidorowski, K. ; Stringer, O. ; Udrea, S.GSI* ; Veness, R. ; Welsch, C. ; Zhang, H. ; Forck, P. (Editor) ; Wawrzyniak, A. (Editor) ; Schaa, V. R. W. (Editor) ; Kowalski, G. W. (Editor) ; Cudek, A. (Editor)

2022
JACoW Publishing Geneva, Switzerland

Please use a persistent id in citations: doi:10.18429/JACOW-IBIC2022-TUP17  doi:10.15120/GSI-2025-00430

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.

Keyword(s): Accelerator Physics ; 03 Transverse Profile and Emittance Monitors

Note: Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license.

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Contributing Institute(s):

1. Beam Diagnostics (BEA)

Research Program(s):

1. 621 - Accelerator Research and Development (POF4-621) (POF4-621)

Experiment(s):

1. no experiment theory work (theory)

Appears in the scientific report 2022

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Database coverage:
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