Longitudinal Coupled-Bunch Instabilities in the CERN PS

Longitudinal coupled bunch instabilities in the CERN PS represent a major limitation to the high brightness beam delivered for the LHC. To identify possible impedance sources for these instabilities, machine development studies have been carried out. The growth rates of coupled bunch modes have been...

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Detalles Bibliográficos
Autores principales: Damerau, H, Hancock, S, Mehler, M, Rossi, C, Shaposhnikova, E, Tückmantel, Joachim, Vallet, J L
Lenguaje:eng
Publicado: 2007
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.1109/PAC.2007.4439978
http://cds.cern.ch/record/1055555
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author Damerau, H
Hancock, S
Mehler, M
Rossi, C
Shaposhnikova, E
Tückmantel, Joachim
Vallet, J L
author_facet Damerau, H
Hancock, S
Mehler, M
Rossi, C
Shaposhnikova, E
Tückmantel, Joachim
Vallet, J L
author_sort Damerau, H
collection CERN
description Longitudinal coupled bunch instabilities in the CERN PS represent a major limitation to the high brightness beam delivered for the LHC. To identify possible impedance sources for these instabilities, machine development studies have been carried out. The growth rates of coupled bunch modes have been measured, and modes have been identified using mountain range data. Growth rate estimations from coupled bunch mode theory are compared to these results. It is shown that the longitudinal impedance of the broad resonance curve of the main 10 MHz RF system can be identified as the most probable source. Several modes are driven simultaneously due to the large width of the resonance, which is considered for the analysis.
id cern-1055555
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2007
record_format invenio
spelling cern-10555552019-09-30T06:29:59Zdoi:10.1109/PAC.2007.4439978http://cds.cern.ch/record/1055555engDamerau, HHancock, SMehler, MRossi, CShaposhnikova, ETückmantel, JoachimVallet, J LLongitudinal Coupled-Bunch Instabilities in the CERN PSAccelerators and Storage RingsLongitudinal coupled bunch instabilities in the CERN PS represent a major limitation to the high brightness beam delivered for the LHC. To identify possible impedance sources for these instabilities, machine development studies have been carried out. The growth rates of coupled bunch modes have been measured, and modes have been identified using mountain range data. Growth rate estimations from coupled bunch mode theory are compared to these results. It is shown that the longitudinal impedance of the broad resonance curve of the main 10 MHz RF system can be identified as the most probable source. Several modes are driven simultaneously due to the large width of the resonance, which is considered for the analysis.CERN-AB-2007-051oai:cds.cern.ch:10555552007
spellingShingle Accelerators and Storage Rings
Damerau, H
Hancock, S
Mehler, M
Rossi, C
Shaposhnikova, E
Tückmantel, Joachim
Vallet, J L
Longitudinal Coupled-Bunch Instabilities in the CERN PS
title Longitudinal Coupled-Bunch Instabilities in the CERN PS
title_full Longitudinal Coupled-Bunch Instabilities in the CERN PS
title_fullStr Longitudinal Coupled-Bunch Instabilities in the CERN PS
title_full_unstemmed Longitudinal Coupled-Bunch Instabilities in the CERN PS
title_short Longitudinal Coupled-Bunch Instabilities in the CERN PS
title_sort longitudinal coupled-bunch instabilities in the cern ps
topic Accelerators and Storage Rings
url https://dx.doi.org/10.1109/PAC.2007.4439978
http://cds.cern.ch/record/1055555
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AT hancocks longitudinalcoupledbunchinstabilitiesinthecernps
AT mehlerm longitudinalcoupledbunchinstabilitiesinthecernps
AT rossic longitudinalcoupledbunchinstabilitiesinthecernps
AT shaposhnikovae longitudinalcoupledbunchinstabilitiesinthecernps
AT tuckmanteljoachim longitudinalcoupledbunchinstabilitiesinthecernps
AT valletjl longitudinalcoupledbunchinstabilitiesinthecernps

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