TY  - CONF
AU  - Sedláček, Ondrej
AU  - Ady, Marton
AU  - Churchman, Ashley
AU  - Forck, Peter
AU  - Mazzoni, Stefano
AU  - Rossi, Adriana
AU  - Sameed, Muhammed
AU  - Schneider, Gerhard
AU  - Sequeiro, Cristina
AU  - Sidorowski, Krystian
AU  - Stringer, Oliver
AU  - Udrea, Serban
AU  - Veness, Raymond
AU  - Webber-Date, Alexander
AU  - Welsch, Carsten
AU  - Zhang, Hao
A3  - Schaa, Volker R. W.
A3  - Batten, Tonia
A3  - Bree, Michael
A3  - Petit-Jean-Genaz, Christine
A3  - Hunter, Darren
TI  - Gas Jet-Based Fluorescence Profile Monitor for Low Energy Electrons and High Energy Protons at LHC
CY  - Geneva, Switzerland
PB  - JACoW Publishing
M1  - GSI-2025-00423
SP  - 6 pages
PY  - 2023
N1  - Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license.
AB  - The ever-developing accelerator capabilities of increasing beam intensity, e.g. for High Luminosity LHC (HL-LHC), demand novel non-invasive beam diagnostics. As a part of the HL-LHC project a Beam Gas Curtain monitor (BGC), a gas jet-based fluorescence transverse profile monitor, is being developed. The BGC uses a supersonic gas jet sheet that traverses the beam at 45° and visualizes a two-dimensional beam-induced fluorescent image. The principle of observing photons created by fluorescence makes the monitor insensitive to present electric or magnetic fields. Therefore, the monitor is well suited for high-intensity beams such as low-energy electron beam of Hollow Electron Lens (HEL), and HL-LHC proton beam, either as a profile or an overlap monitor. This talk will focus on the first gas jet measured transverse profile of the 7keV hollow electron beam. The measurements were carried out at the Electron Beam Test Stand at CERN testing up to 5A beam for HEL. A comparison with Optical Transition Radiation measurements shows consistency with the BGC results. The BGC installation of January 2023 at LHC is shown, including past results from distributed gas fluorescence tests.
T2  - 12th International Beam Instrumentation Conference
CY  - 10 Sep 2023 - 14 Sep 2023, Saskatoon (Canada)
Y2  - 10 Sep 2023 - 14 Sep 2023
M2  - Saskatoon, Canada
KW  - Accelerator Physics (Other)
KW  - 03 Transverse Profile and Emittance Monitors (Other)
LB  - PUB:(DE-HGF)8
DO  - DOI:10.18429/JACOW-IBIC2023-WE3I01
UR  - https://repository.gsi.de/record/357731
ER  -