A Mechanism for Emittance Growth Based on Non-Linear Islands in LHC

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. Be...

Descripción completa

Detalles Bibliográficos
Autores principales: Maclean, Ewen H, Giovannozzi, Massimo, Persson, Tobias H B, Tomás García, Rogelio
Lenguaje:eng
Publicado: JACoW 2021
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.18429/JACoW-IPAC2021-THPAB169
http://cds.cern.ch/record/2810347
_version_ 1780973213394665472
author Maclean, Ewen H
Giovannozzi, Massimo
Persson, Tobias H B
Tomás García, Rogelio
author_facet Maclean, Ewen H
Giovannozzi, Massimo
Persson, Tobias H B
Tomás García, Rogelio
author_sort Maclean, Ewen H
collection CERN
description 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.
id cern-2810347
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2021
publisher JACoW
record_format invenio
spelling cern-28103472022-05-24T19:05:28Zdoi:10.18429/JACoW-IPAC2021-THPAB169http://cds.cern.ch/record/2810347engMaclean, Ewen HGiovannozzi, MassimoPersson, Tobias H BTomás García, RogelioA Mechanism for Emittance Growth Based on Non-Linear Islands in LHCAccelerators and Storage RingsLandau 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.JACoWoai:cds.cern.ch:28103472021
spellingShingle Accelerators and Storage Rings
Maclean, Ewen H
Giovannozzi, Massimo
Persson, Tobias H B
Tomás García, Rogelio
A Mechanism for Emittance Growth Based on Non-Linear Islands in LHC
title A Mechanism for Emittance Growth Based on Non-Linear Islands in LHC
title_full A Mechanism for Emittance Growth Based on Non-Linear Islands in LHC
title_fullStr A Mechanism for Emittance Growth Based on Non-Linear Islands in LHC
title_full_unstemmed A Mechanism for Emittance Growth Based on Non-Linear Islands in LHC
title_short A Mechanism for Emittance Growth Based on Non-Linear Islands in LHC
title_sort mechanism for emittance growth based on non-linear islands in lhc
topic Accelerators and Storage Rings
url https://dx.doi.org/10.18429/JACoW-IPAC2021-THPAB169
http://cds.cern.ch/record/2810347
work_keys_str_mv AT macleanewenh amechanismforemittancegrowthbasedonnonlinearislandsinlhc
AT giovannozzimassimo amechanismforemittancegrowthbasedonnonlinearislandsinlhc
AT perssontobiashb amechanismforemittancegrowthbasedonnonlinearislandsinlhc
AT tomasgarciarogelio amechanismforemittancegrowthbasedonnonlinearislandsinlhc
AT macleanewenh mechanismforemittancegrowthbasedonnonlinearislandsinlhc
AT giovannozzimassimo mechanismforemittancegrowthbasedonnonlinearislandsinlhc
AT perssontobiashb mechanismforemittancegrowthbasedonnonlinearislandsinlhc
AT tomasgarciarogelio mechanismforemittancegrowthbasedonnonlinearislandsinlhc

Ejemplares similares