Simulation of a Feedback System for the Attenuation of e-Cloud Driven Instability

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Electron clouds impose limitations on current accelerators that may be more severe for future machines, unless adequate measures of mitigation are taken. Recently, it has been proposed to use feedback systems operating at high frequency (in the GHz range) to damp single-bunch transverse coherent oscillations that may otherwise be amplified during the interaction of the beam with ambient electron clouds. We have used the simulation package WARP-POSINST and the code Headtail to study the growth rate and frequency patterns in space-time of the electron cloud driven beam breakup instability in the CERN SPS accelerator with, or without, an idealized feedback ... continued below

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Vay, J.-L.; Furman, M.A.; Fox, J.; Rivetta, C.; de Maria, R. & Rumolo, G. May 4, 2009.

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Electron clouds impose limitations on current accelerators that may be more severe for future machines, unless adequate measures of mitigation are taken. Recently, it has been proposed to use feedback systems operating at high frequency (in the GHz range) to damp single-bunch transverse coherent oscillations that may otherwise be amplified during the interaction of the beam with ambient electron clouds. We have used the simulation package WARP-POSINST and the code Headtail to study the growth rate and frequency patterns in space-time of the electron cloud driven beam breakup instability in the CERN SPS accelerator with, or without, an idealized feedback model for damping the instability.

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  • Particle Accelerator Conference 2009, PAC '09, Vancouver BC, Canada, May 4-8, 2009

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  • Report No.: LBNL-2658E
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 973950
  • Archival Resource Key: ark:/67531/metadc934068

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  • May 4, 2009

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  • Nov. 13, 2016, 7:26 p.m.

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  • Jan. 4, 2017, 3:19 p.m.

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Vay, J.-L.; Furman, M.A.; Fox, J.; Rivetta, C.; de Maria, R. & Rumolo, G. Simulation of a Feedback System for the Attenuation of e-Cloud Driven Instability, article, May 4, 2009; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc934068/: accessed January 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.