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Article
Title Mitigation of losses at injection protection devices in the CERN LHC
Author(s) Tomás, R (CERN) ; Calia, A (CERN) ; D'Andrea, M (CERN) ; Deniau, L (CERN) ; Jacquet, D (CERN) ; Kostoglou, S (CERN) ; Maclean, E H (CERN) ; Mirarchi, D (CERN) ; Paraschou, K (CERN) ; Persson, T (CERN) ; Redaelli, S (CERN) ; Van der Veken, F (CERN) ; Ziliotto, F (CERN)
Publication 2023
Number of pages 4
In: JACoW IPAC 2023 (2023) MOPL019
In: 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.MOPL019
DOI 10.18429/JACoW-IPAC2023-MOPL019
Subject category Accelerators and Storage Rings
Abstract During loss maps performed with beam at injection energy in the LHC with the high octupole and chromaticity settings used for multi-train operation, large beam losses were observed at an injection protection device (TDIS). Although these losses did not present a threat to machine operation or protection, reducing them is of high importance to improve machine performance. Various strategies were developed to mitigate these losses, such as octupole setting optimization at constant Landau damping and vertical tune reduction. Further optimization of collimator settings is also considered. Results of experimental tests and first simulations are reported here together with considerations for the future.
Copyright/License CC-BY-4.0

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 Record created 2024-01-10, last modified 2024-01-10


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