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TY - CONF AU - Sedláček, O. AU - Ady, M. AU - Castro Sequeiro, C. AU - Churchman, A.R. AU - Forck, P. AU - Mazzoni, S. AU - Sameed, M. AU - Schneider, G. AU - Sidorowski, K. AU - Stringer, O. AU - Udrea, S. AU - Veness, R. AU - Welsch, C.P. AU - Zhang, H.D. ED - Forck, Peter ED - Wawrzyniak, Adriana ED - Schaa, Volker R.W. ED - Kowalski, Grzegorz W. ED - Cudek, Agnieszka (SOLARIS, Kraków TI - HL-LHC Beam Gas Fluorescence Studies for Transverse Profile Measurement J2 - Proc. of IBIC2022, Kraków, Poland, 11-15 September 2022 CY - Kraków, Poland T2 - International Beam Instrumentation Conference T3 - 11 LA - english AB - 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. PB - JACoW Publishing CP - Geneva, Switzerland SP - 261 EP - 264 KW - background KW - synchrotron KW - radiation KW - synchrotron-radiation KW - photon DA - 2022/12 PY - 2022 SN - 2673-5350 SN - 978-3-95450-241-7 DO - doi:10.18429/JACoW-IBIC2022-TUP17 UR - https://jacow.org/ibic2022/papers/tup17.pdf ER -