Dynamics of the Electron Pinch and Incoherent Tune Shift Induced by Electron Cloud

When a proton bunch passes through an electron cloud, the cloud electrons are attracted by the beam electric field and their density strongly increases near the beam centre. This gives rise to an incoherent proton tune shift, which depends on the longitudinal and radial position within the bunch. We...

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Detalles Bibliográficos
Autores principales: Benedetto, Elena, Zimmermann, Frank
Lenguaje:eng
Publicado: 2004
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/790657
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author Benedetto, Elena
Zimmermann, Frank
author_facet Benedetto, Elena
Zimmermann, Frank
author_sort Benedetto, Elena
collection CERN
description When a proton bunch passes through an electron cloud, the cloud electrons are attracted by the beam electric field and their density strongly increases near the beam centre. This gives rise to an incoherent proton tune shift, which depends on the longitudinal and radial position within the bunch. We present an analytical description of the ’electron pinch’ and the resulting proton tune shift for a circular symmetry and a Gaussian cloud, considering a linear transverse force and various longitudinal beam profiles. Benchmarking and extending the results by computer simulations, we can also explore the effects of a non-linear transverse force.
id cern-790657
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2004
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spelling cern-7906572022-08-17T13:33:54Zhttp://cds.cern.ch/record/790657engBenedetto, ElenaZimmermann, FrankDynamics of the Electron Pinch and Incoherent Tune Shift Induced by Electron CloudAccelerators and Storage RingsWhen a proton bunch passes through an electron cloud, the cloud electrons are attracted by the beam electric field and their density strongly increases near the beam centre. This gives rise to an incoherent proton tune shift, which depends on the longitudinal and radial position within the bunch. We present an analytical description of the ’electron pinch’ and the resulting proton tune shift for a circular symmetry and a Gaussian cloud, considering a linear transverse force and various longitudinal beam profiles. Benchmarking and extending the results by computer simulations, we can also explore the effects of a non-linear transverse force.CERN-AB-2004-054oai:cds.cern.ch:7906572004-08-17
spellingShingle Accelerators and Storage Rings
Benedetto, Elena
Zimmermann, Frank
Dynamics of the Electron Pinch and Incoherent Tune Shift Induced by Electron Cloud
title Dynamics of the Electron Pinch and Incoherent Tune Shift Induced by Electron Cloud
title_full Dynamics of the Electron Pinch and Incoherent Tune Shift Induced by Electron Cloud
title_fullStr Dynamics of the Electron Pinch and Incoherent Tune Shift Induced by Electron Cloud
title_full_unstemmed Dynamics of the Electron Pinch and Incoherent Tune Shift Induced by Electron Cloud
title_short Dynamics of the Electron Pinch and Incoherent Tune Shift Induced by Electron Cloud
title_sort dynamics of the electron pinch and incoherent tune shift induced by electron cloud
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/790657
work_keys_str_mv AT benedettoelena dynamicsoftheelectronpinchandincoherenttuneshiftinducedbyelectroncloud
AT zimmermannfrank dynamicsoftheelectronpinchandincoherenttuneshiftinducedbyelectroncloud

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