CERN Accelerating science

Internal Note
Report number	CERN-ACC-NOTE-2023-0024
Title	MD 7224: LHC collimation quench test with protons
Author(s)	Hermes, Pascal Dominik (CERN) ; Abramov, Andrey (CERN) ; Bruce, Roderik (CERN) ; Calzolari, Daniele (Universita e INFN, Padova (IT)) ; D'Andrea, Marco (CERN) ; Giovannozzi, Massimo (CERN) ; Hernalsteens, Cedric (CERN) ; Lechner, Anton (CERN) ; Lindstrom, Bjorn Hans Filip (CERN) ; Mirarchi, Daniele (CERN) ; Montanari, Carlo Emilio (University of Manchester (GB)) ; Morales Vigo, Sara (University of Liverpool (GB)) ; Potoine, Jean-Baptiste ; Redaelli, Stefano (CERN) ; Rodin, Volodymyr (CERN) ; Salvachua Ferrando, Belen Maria (CERN) ; Soderen, Martin ; Uythoven, Jan (CERN) ; Valuch, Daniel (CERN) ; Wiesner, Christoph (CERN) ; Wollmann, Daniel (CERN) ; Zamantzas, Christos (CERN) ; Zerlauth, Markus (CERN)
Corporate author(s)	CERN. Geneva. ATS Department
Publication	2023
Imprint	01 Dec 2023
Subject category	Accelerators and Storage Rings
Accelerator/Facility, Experiment	CERN LHC
Keywords	LHC ; Collimation system ; Main dipole Quench Limit ; ADT ; BLM system
Abstract	This note describes a collimation quench test performed at the CERN Large Hadron Collider. The test was designed to quantify whether a primary beam power load of 1MW on the betatron collimation system, the High Luminosity LHC design specification, can be sustained without quenching the superconducting dipole magnets in the dispersion suppressor downstream of the straight section housing the collimation system (DS). Beam losses of more than 650kW were induced using the LHC transverse damper at a beam energy of 6.8TeV, without magnet quench. By retracing the secondary LHC collimators, the amount of collimation debris scattered into the DS magnets was increased by roughly 50%, also without magnet quench.
Submitted by	[email protected]