CERN Accelerating science

Published Articles
Report number	CERN-ACC-2015-250
Title	Upgrade of the TCDQ Diluters for the LHC Beam Dump System
Author(s)	Atanasov, Miroslav G (CERN) ; Bartmann, Wolfgang (CERN) ; Borburgh, Jan (CERN) ; Boucly, Christophe (CERN) ; Bracco, Chiara (CERN) ; Gentini, Luca (CERN) ; Moles, Benjamin (CERN) ; Weterings, Wim (CERN)
Publication	2015
Number of pages	4
In:	6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.WEPMN067
Subject category	Accelerators and Storage Rings
Abstract	The TCDQ diluters are installed as part of the LHC beam dump system to protect the Q4 quadrupole and other downstream elements during a beam dump that is not synchronised with the abort gap, or in case of erratic firing of the extraction kickers. These diluter elements installed during Run 1 were compatible with beam up to 60 % of the nominal intensity, which was insufficient for the second run of the LHC. This paper describes the requirements for the upgrade done during the First Long Shutdown (LS1), to make the TCDQ compatible with the full 7 TeV LHC beam at intensities required for the future runs of the machine. Subsequently the mechanical design changes, implementation and commissioning of the TCDQ are reported.
Copyright/License	publication: © 2015-2025 The Author(s) (License: CC-BY-3.0)

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