Resonance trapping, stochastic diffusion and incoherent emittance growth induced by structured electron-cloud pinch

When a bunch passes through an electron cloud, the transverse electron density distribution is enhanced and modulated in time as a consequence of the motion of individual electrons under the action of the nonlinear beam field. The effect of this “structured” electron pinch together with the synchrot...

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Detalles Bibliográficos
Autores principales: Franchetti, G, Zimmermann, F
Lenguaje:eng
Publicado: CERN 2008
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.5170/CERN-2008-005.85
http://cds.cern.ch/record/1133359
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author Franchetti, G
Zimmermann, F
author_facet Franchetti, G
Zimmermann, F
author_sort Franchetti, G
collection CERN
description When a bunch passes through an electron cloud, the transverse electron density distribution is enhanced and modulated in time as a consequence of the motion of individual electrons under the action of the nonlinear beam field. The effect of this “structured” electron pinch together with the synchrotron motion of beam particles leads to an incoherent emittance growth via the excitation and repeated crossing of resonances, that can give rise to either stochastic “scattering” (“diffusion”) or trapping. We study these effects via a toy model of an idealized pinch, and present applications to the CERN SPS and the GSI SIS100.
id cern-1133359
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2008
publisher CERN
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spelling cern-11333592019-09-30T06:29:59Zdoi:10.5170/CERN-2008-005.85http://cds.cern.ch/record/1133359engFranchetti, GZimmermann, FResonance trapping, stochastic diffusion and incoherent emittance growth induced by structured electron-cloud pinchAccelerators and Storage RingsWhen a bunch passes through an electron cloud, the transverse electron density distribution is enhanced and modulated in time as a consequence of the motion of individual electrons under the action of the nonlinear beam field. The effect of this “structured” electron pinch together with the synchrotron motion of beam particles leads to an incoherent emittance growth via the excitation and repeated crossing of resonances, that can give rise to either stochastic “scattering” (“diffusion”) or trapping. We study these effects via a toy model of an idealized pinch, and present applications to the CERN SPS and the GSI SIS100.CERNoai:cds.cern.ch:11333592008
spellingShingle Accelerators and Storage Rings
Franchetti, G
Zimmermann, F
Resonance trapping, stochastic diffusion and incoherent emittance growth induced by structured electron-cloud pinch
title Resonance trapping, stochastic diffusion and incoherent emittance growth induced by structured electron-cloud pinch
title_full Resonance trapping, stochastic diffusion and incoherent emittance growth induced by structured electron-cloud pinch
title_fullStr Resonance trapping, stochastic diffusion and incoherent emittance growth induced by structured electron-cloud pinch
title_full_unstemmed Resonance trapping, stochastic diffusion and incoherent emittance growth induced by structured electron-cloud pinch
title_short Resonance trapping, stochastic diffusion and incoherent emittance growth induced by structured electron-cloud pinch
title_sort resonance trapping, stochastic diffusion and incoherent emittance growth induced by structured electron-cloud pinch
topic Accelerators and Storage Rings
url https://dx.doi.org/10.5170/CERN-2008-005.85
http://cds.cern.ch/record/1133359
work_keys_str_mv AT franchettig resonancetrappingstochasticdiffusionandincoherentemittancegrowthinducedbystructuredelectroncloudpinch
AT zimmermannf resonancetrappingstochasticdiffusionandincoherentemittancegrowthinducedbystructuredelectroncloudpinch

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