CERN Accelerating science

Published Articles
Report number CERN-ACC-2018-175
Title Experimental Characterisation of a Fast Instability Linked to Losses in the 16L2 Cryogenic Half-Cell in the CERN LHC
Author(s) Salvant, Benoit (CERN) ; Antipov, Sergey (CERN) ; Arduini, Gianluigi (CERN) ; Biancacci, Nicolo (CERN) ; Buffat, Xavier (CERN) ; Carver, Lee (CERN) ; Collier, Paul (CERN) ; Gorzawski, Arkadiusz (CERN) ; Höfle, Wolfgang (CERN) ; Iadarola, Giovanni (CERN) ; Kotzian, Gerd (CERN) ; Lechner, Anton (CERN) ; Levens, Thomas (CERN) ; Mether, Lotta (Ecole Polytechnique, Lausanne, LPAP) ; Mirarchi, Daniele (CERN) ; Métral, Elias (CERN) ; Rumolo, Giovanni (CERN) ; Valuch, Daniel (CERN)
Publication 2018
Number of pages 4
In: 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPAF058
DOI 10.18429/JACoW-IPAC2018-THPAF058
Subject category Accelerators and Storage Rings
Accelerator/Facility, Experiment CERN LHC
Abstract The operation during the summer months of the 2017 Run of the CERN LHC was plagued with fast beam losses that repeatedly occurred in the 16th arc half-cell at the left of IP2 as well as in the collimation insertion, leading to unwanted beam dumps. Transverse coherent oscillations were observed during this fast process. We detail here the experimental observations of coherent motion that al-lowed shedding light upon parts of the mechanism and identify the potential mitigations that were successfully implemented in the second half of the Run.
Copyright/License CC-BY-3.0

Corresponding record in: Inspire


 Δημιουργία εγγραφής 2018-11-06, τελευταία τροποποίηση 2019-03-12


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