CERN Accelerating science

Published Articles
Report number CERN-ACC-2019-208
Title Machine protection aspects of high-voltage flashovers of the LHC beam dump dilution kickers
Author(s) Wiesner, Christoph (CERN) ; Bartmann, Wolfgang (CERN) ; Bracco, Chiara (CERN) ; Calviani, Marco (CERN) ; Carlier, Etienne (CERN) ; Ducimetière, Laurent (CERN) ; Frankl, Matthias (CERN) ; Fraser, Matthew (CERN) ; Gilardoni, Simone (CERN) ; Goddard, Brennan (CERN) Показать всех 22 авторов
Publication 2019
Number of pages 4
In: 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.WEPMP040
DOI 10.18429/JACoW-IPAC2019-WEPMP040
Subject category Accelerators and Storage Rings
Accelerator/Facility, Experiment CERN LHC
Abstract The LHC Beam Dump System is required to safely dispose of the energy of the stored beam. In order to reduce the energy density deposited in the beam dump, a dedicated dilution system is installed. On July 14, 2018, during a regular beam dump at 6.5 TeV beam energy, a high-voltage flashover of two vertical dilution kickers was observed, leading to a voltage breakdown and reduced dilution in the vertical plane. It was the first incident of this type since the start of LHC beam operation. In this paper, the flashover event is described and the implications analysed. Circuit simulations of the current in the magnet coil as well as simulations of the resulting beam sweep pattern are presented and compared with the measurements. The criticality of the event is assessed and implications for future failure scenarios are discussed.
Copyright/License Publication: (License: CC-BY-3.0)

Corresponding record in: Inspire


 Запись создана 2019-10-16, последняя модификация 2022-04-08


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