Localizing Impedance Sources from Betatron-phase Beating in the CERN SPS

Multi-turn beam-position data recorded after beam excitation can be used to extract the betatron-phase advance between adjacent beam position monitors (BPMs) by a harmonic analysis. Performing this treatment for different beam intensities yields the change in phase advance with current. A local impe...

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Detalles Bibliográficos
Autores principales: Arduini, Gianluigi, Carli, Christian, Zimmermann, Frank
Lenguaje:eng
Publicado: 2004
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/793443
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author Arduini, Gianluigi
Carli, Christian
Zimmermann, Frank
author_facet Arduini, Gianluigi
Carli, Christian
Zimmermann, Frank
author_sort Arduini, Gianluigi
collection CERN
description Multi-turn beam-position data recorded after beam excitation can be used to extract the betatron-phase advance between adjacent beam position monitors (BPMs) by a harmonic analysis. Performing this treatment for different beam intensities yields the change in phase advance with current. A local impedance contributes to the average tune shift with current, but, more importantly, it also causes a mismatch and phase beating. We describe an attempt to determine the localized impedance around the SPS ring by fitting the measured betatron phase shift with current at all BPMs to the expected impedance response matrix.
id cern-793443
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2004
record_format invenio
spelling cern-7934432022-08-17T13:35:26Zhttp://cds.cern.ch/record/793443engArduini, GianluigiCarli, ChristianZimmermann, FrankLocalizing Impedance Sources from Betatron-phase Beating in the CERN SPSAccelerators and Storage RingsMulti-turn beam-position data recorded after beam excitation can be used to extract the betatron-phase advance between adjacent beam position monitors (BPMs) by a harmonic analysis. Performing this treatment for different beam intensities yields the change in phase advance with current. A local impedance contributes to the average tune shift with current, but, more importantly, it also causes a mismatch and phase beating. We describe an attempt to determine the localized impedance around the SPS ring by fitting the measured betatron phase shift with current at all BPMs to the expected impedance response matrix.CERN-AB-2004-083oai:cds.cern.ch:7934432004-08-17
spellingShingle Accelerators and Storage Rings
Arduini, Gianluigi
Carli, Christian
Zimmermann, Frank
Localizing Impedance Sources from Betatron-phase Beating in the CERN SPS
title Localizing Impedance Sources from Betatron-phase Beating in the CERN SPS
title_full Localizing Impedance Sources from Betatron-phase Beating in the CERN SPS
title_fullStr Localizing Impedance Sources from Betatron-phase Beating in the CERN SPS
title_full_unstemmed Localizing Impedance Sources from Betatron-phase Beating in the CERN SPS
title_short Localizing Impedance Sources from Betatron-phase Beating in the CERN SPS
title_sort localizing impedance sources from betatron-phase beating in the cern sps
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/793443
work_keys_str_mv AT arduinigianluigi localizingimpedancesourcesfrombetatronphasebeatinginthecernsps
AT carlichristian localizingimpedancesourcesfrombetatronphasebeatinginthecernsps
AT zimmermannfrank localizingimpedancesourcesfrombetatronphasebeatinginthecernsps

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