CERN Accelerating science

Article
Title	Non-Invasive Beam Profile Monitoring for the HL-LHC Hollow Electron Lens
Related title	NON-INVASIVE BEAM PROFILE MONITORING FOR THE HL-LHC HOLLOW ELECTRON LENS
Author(s)	Salehilashkajani, Amir (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Ady, Marton (CERN) ; Chritin, Nicolas S (CERN) ; Forck, Peter (Darmstadt, GSI) ; Jens, Noah (CERN) ; Jones, Owain Rhodri (CERN) ; Kersevan, Roberto (CERN) ; Kumar, Narender (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Lefèvre, Thibaut (CERN) ; Mazzoni, Stefano (CERN) ; Papazoglou, Giannis (CERN) ; Rossi, Adriana (CERN) ; Schneider, Gerhard (CERN) ; Sedláček, Ondrej (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Udrea, Serban (Darmstadt, GSI) ; Veness, Raymond (CERN) ; Welsch, Carsten P (Liverpool U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Zhang, Hao D (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.)
Publication	JACoW, 2021
Number of pages	4
In:	JACoW IPAC 2021 (2021) 884-887
In:	12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.884-887
DOI	10.18429/JACoW-IPAC2021-MOPAB279 (publication)
Subject category	Accelerators and Storage Rings
Abstract	A Hollow Electron Lens (HEL) is currently under development for the High-Luminosity upgrade of the Large Hadron Collider (HL-LHC). In this device, a hollow electron beam co-propagates with a central proton beam and provides active halo control in the LHC. To ensure the concentricity of the two beams, a non-invasive diagnostic instrument is currently being commissioned. This instrument is a compact version of an existing prototype that leverages beam induced fluorescence with supersonic gas curtain technology. This contribution includes the design features of this version of the monitor, recent progress, and future plans for tests at the Cockcroft Institute and the electron lens test stand at CERN.
Copyright/License	publication: © 2021 (License: CC-BY-3.0)

Corresponding record in: Inspire