Landau damping of coherent beam-beam modes by overlap with synchrotron side-bands.

For the nominal LHC parameters the coherent beam-beam pi-mode is outside the incoherent continuum and therefore does not experience Landau damping. Mechanisms to restore damping by reducing the degree of symmetry between the two beams are effective, but may not be desirable due to possible side effe...

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Detalles Bibliográficos
Autores principales: Herr, Werner, Paparella, R
Lenguaje:eng
Publicado: 2002
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/692044
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author Herr, Werner
Paparella, R
author_facet Herr, Werner
Paparella, R
author_sort Herr, Werner
collection CERN
description For the nominal LHC parameters the coherent beam-beam pi-mode is outside the incoherent continuum and therefore does not experience Landau damping. Mechanisms to restore damping by reducing the degree of symmetry between the two beams are effective, but may not be desirable due to possible side effects. Since the synchrotron tune and the linear beam-beam tuneshift have the same order of magnitude for the LHC, Landau damping could be provided by overlapping the discrete modes with the synchrotron sidebands of the incoherent continuum. In this report we study this damping effect qualitatively and quantitatively with a strong-strong simulation model.
id cern-692044
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
record_format invenio
spelling cern-6920442023-05-31T13:24:55Zhttp://cds.cern.ch/record/692044engHerr, WernerPaparella, RLandau damping of coherent beam-beam modes by overlap with synchrotron side-bands.Accelerators and Storage RingsFor the nominal LHC parameters the coherent beam-beam pi-mode is outside the incoherent continuum and therefore does not experience Landau damping. Mechanisms to restore damping by reducing the degree of symmetry between the two beams are effective, but may not be desirable due to possible side effects. Since the synchrotron tune and the linear beam-beam tuneshift have the same order of magnitude for the LHC, Landau damping could be provided by overlapping the discrete modes with the synchrotron sidebands of the incoherent continuum. In this report we study this damping effect qualitatively and quantitatively with a strong-strong simulation model.LHC-PROJECT-NOTE-304oai:cds.cern.ch:6920442002-10-25
spellingShingle Accelerators and Storage Rings
Herr, Werner
Paparella, R
Landau damping of coherent beam-beam modes by overlap with synchrotron side-bands.
title Landau damping of coherent beam-beam modes by overlap with synchrotron side-bands.
title_full Landau damping of coherent beam-beam modes by overlap with synchrotron side-bands.
title_fullStr Landau damping of coherent beam-beam modes by overlap with synchrotron side-bands.
title_full_unstemmed Landau damping of coherent beam-beam modes by overlap with synchrotron side-bands.
title_short Landau damping of coherent beam-beam modes by overlap with synchrotron side-bands.
title_sort landau damping of coherent beam-beam modes by overlap with synchrotron side-bands.
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/692044
work_keys_str_mv AT herrwerner landaudampingofcoherentbeambeammodesbyoverlapwithsynchrotronsidebands
AT paparellar landaudampingofcoherentbeambeammodesbyoverlapwithsynchrotronsidebands

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