CERN Accelerating science

Published Articles
Report number	CERN-ACC-2019-201
Title	Commissioning of the prototype for a new gas curtain beam profile monitor using beam induced fluorescence for HL-LHC
Author(s)	Salehilashkajani, Amir (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Ady, Marton (CERN) ; Chritin, Nicolas (CERN) ; Forck, Peter (Darmstadt, GSI) ; Glutting, Johanna (CERN) ; Jones, Owain Rhodri (CERN) ; Kersevan, Roberto (CERN) ; Marriott-Dodington, Thomas (CERN) ; Mazzoni, Stefano (CERN) ; Rossi, Adriana (CERN) ; Schneider, Gerhard (CERN) ; Udrea, Serban (Darmstadt, GSI) ; Veness, Raymond (CERN) ; Welsch, Carsten (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Zhang, Hao (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main))
Publication	2019
Number of pages	4
In:	10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPGW093
DOI	10.18429/JACoW-IPAC2019-WEPGW093
Subject category	Accelerators and Storage Rings
Accelerator/Facility, Experiment	CERN HL-LHC
Abstract	A new supersonic gas-jet curtain based beam profile monitor is under development for minimally invasive simultaneous transverse profile diagnostics of proton and electron beams, at pressures compatible with LHC. The monitor makes use of a thin gas-jet curtain angled at 45° with respect to the charged particle beams. The fluorescence caused by the interaction between the curtain and the beam can then be detected using a dedicated imaging system to determine its transverse profile. This contribution details design features of the monitor, discusses the gas-jet curtain formation and presents various experimental tests, including profile measurements of an electron beam using nitrogen and neon curtains. The gas-jet density was estimated by correlating it with the number of photons detected by the camera. These measurements are then compared with results obtained using a movable pressure gauge. This monitor has been commissioned in collaboration with CERN, GSI and the University of Liverpool. It serves as a first prototype of a final design that will be placed in the LHC beam line to measure the profile of the proton beam.
Copyright/License	Publication: (License: CC-BY-3.0)

Corresponding record in: Inspire