CERN Accelerating science

Article
Title A Mechanism for Emittance Growth Based on Non-Linear Islands in LHC
Related titleA MECHANISM FOR EMITTANCE GROWTH BASED ON NON-LINEAR ISLANDS IN THE LHC
Author(s) Maclean, Ewen H (CERN) ; Giovannozzi, Massimo (CERN) ; Persson, Tobias H B (CERN) ; Tomás García, Rogelio (CERN)
Publication Geneva : JACoW, 2021
Number of pages 4
In: JACoW IPAC 2021 (2021) 4082-4085
In: 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.4082-4085
DOI 10.18429/JACoW-IPAC2021-THPAB169 (publication)
Subject category Accelerators and Storage Rings
Abstract Landau octupoles are used in the LHC to prevent coherent instabilities of the circulating beam. The reduction of their strength occurring during the energy ramp can transport particles in nonlinear islands to larger amplitude. This has the potential to lead to emittance growth and to beam-losses. Beam-based studies and simulations of emittance growth during Landau octupole ramps performed in the LHC are presented to explore this mechanism in more detail.
Copyright/License publication: © 2021 (License: CC-BY-3.0)

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 Record created 2022-05-24, last modified 2022-05-24


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