Comparison of the current LHC Collimators and the SLAC Phase 2 Collimator Impedances

One of the key sources of transverse impedance in the LHC has been the secondary graphite collimators that sit close to the beam at all energies. This limits the stable bunch intensity due to transverse coupled-bunch instabilities and transverse mode coupling instability. To counteract this, new sec...

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Detalles Bibliográficos
Autores principales: Day, Hugo, Caspers, Fritz, Metral, Elias, Salvant, Benoit, Jones, Roger
Lenguaje:eng
Publicado: 2011
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/1389338
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author Day, Hugo
Caspers, Fritz
Metral, Elias
Salvant, Benoit
Jones, Roger
author_facet Day, Hugo
Caspers, Fritz
Metral, Elias
Salvant, Benoit
Jones, Roger
author_sort Day, Hugo
collection CERN
description One of the key sources of transverse impedance in the LHC has been the secondary graphite collimators that sit close to the beam at all energies. This limits the stable bunch intensity due to transverse coupled-bunch instabilities and transverse mode coupling instability. To counteract this, new secondary collimators have been proposed for the phase II upgrade of the LHC collimation system. A number of designs based on different jaw materials and mechanical designs have been proposed. A comparison of the beam coupling impedance of these different designs derived from simulations are presented, with reference to the existing phase I secondary collimator design.
id cern-1389338
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-13893382023-05-30T02:13:53Zhttp://cds.cern.ch/record/1389338engDay, HugoCaspers, FritzMetral, EliasSalvant, BenoitJones, RogerComparison of the current LHC Collimators and the SLAC Phase 2 Collimator ImpedancesAccelerators and Storage RingsOne of the key sources of transverse impedance in the LHC has been the secondary graphite collimators that sit close to the beam at all energies. This limits the stable bunch intensity due to transverse coupled-bunch instabilities and transverse mode coupling instability. To counteract this, new secondary collimators have been proposed for the phase II upgrade of the LHC collimation system. A number of designs based on different jaw materials and mechanical designs have been proposed. A comparison of the beam coupling impedance of these different designs derived from simulations are presented, with reference to the existing phase I secondary collimator design.One of the key sources of transverse impedance in the LHC has been the secondary graphite collimators that sit close to the beam at all energies. This limits the stable bunch intensity due to transverse coupled-bunch instabilities and transverse mode coupling instability. To counteract this, new secondary collimators have been proposed for the phase II upgrade of the LHC collimation system. A number of designs based on different jaw materials and mechanical designs have been proposed. A comparison of the beam coupling impedance of these different designs derived from simulations are presented, with reference to the existing phase I secondary collimator design.arXiv:1110.2027IPAC-2011-MOPS080oai:cds.cern.ch:13893382011-10-11
spellingShingle Accelerators and Storage Rings
Day, Hugo
Caspers, Fritz
Metral, Elias
Salvant, Benoit
Jones, Roger
Comparison of the current LHC Collimators and the SLAC Phase 2 Collimator Impedances
title Comparison of the current LHC Collimators and the SLAC Phase 2 Collimator Impedances
title_full Comparison of the current LHC Collimators and the SLAC Phase 2 Collimator Impedances
title_fullStr Comparison of the current LHC Collimators and the SLAC Phase 2 Collimator Impedances
title_full_unstemmed Comparison of the current LHC Collimators and the SLAC Phase 2 Collimator Impedances
title_short Comparison of the current LHC Collimators and the SLAC Phase 2 Collimator Impedances
title_sort comparison of the current lhc collimators and the slac phase 2 collimator impedances
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1389338
work_keys_str_mv AT dayhugo comparisonofthecurrentlhccollimatorsandtheslacphase2collimatorimpedances
AT caspersfritz comparisonofthecurrentlhccollimatorsandtheslacphase2collimatorimpedances
AT metralelias comparisonofthecurrentlhccollimatorsandtheslacphase2collimatorimpedances
AT salvantbenoit comparisonofthecurrentlhccollimatorsandtheslacphase2collimatorimpedances
AT jonesroger comparisonofthecurrentlhccollimatorsandtheslacphase2collimatorimpedances

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