CERN Accelerating science

Article
Title Optics for Landau damping with minimized octupolar resonances in the LHC
Author(s) Tomás, R (CERN) ; Carlier, F (CERN) ; Chudoba, F (CERN) ; Deniau, L (CERN) ; Dilly, J (CERN) ; Ferrentino, V (CERN ; Naples U.) ; Horney, S (CERN) ; Hostettler, M (CERN) ; Keintzel, J (CERN) ; Kostoglou, S (CERN) ; Le Garrec, M (CERN) ; Maclean, E H (CERN) ; Nissinen, T (CERN) ; Paraschou, K (CERN) ; Persson, T (CERN) ; Solfaroli, M (CERN) ; Soubelet, F (CERN) ; Wegscheider, A (CERN) ; Wenninger, J (CERN)
Publication 2024
Number of pages 14
In: JINST 19 (2024) T05010
In: 68th ICFA Advanced Beam Dynamics workshop on high-Intensity and High-Brightness Hadron Beams (HB 2023), CERN, Geneva, Switzerland, 9 - 13 Oct 2023, pp.T05010
DOI 10.1088/1748-0221/19/05/T05010
Subject category Accelerators and Storage Rings
Accelerator/Facility, Experiment CERN LHC
Abstract Operation of the Large Hadron Collider (LHC) requires strongoctupolar magnetic fields to suppress coherent beam instabilities.The amplitude detuning that is generated by these octupolar magneticfields brings the tune of individual particles close to harmfulresonances, which are mostly driven by the octupolar fieldsthemselves. In 2023, new optics were deployed in the LHC atinjection with optimized betatronic phase advances to minimize theresonances from the octupolar fields without affecting the amplitudedetuning. This paper reports on the optics design, commissioning,and lifetime measurements performed to validate the optics.
Copyright/License © 2024-2025 The Author(s) (License: CC-BY-4.0)

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 Запись создана 2024-06-11, последняя модификация 2024-06-11


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