Study of Electron Cloud for MEIC

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The Medium Energy Electron Ion Collider (MEIC) at Jefferson Lab has been envisioned as a future high energy particle accelerator beyond the 12 GeV upgrade of the existing Continuous Electron Beam Accelerator Facility (CEBAF). Synchrotron radiation from the closely spaced proton bunches in MEIC can generate photoelectrons inside the vacuum chamber and cause secondary emission due to multipacting in the presence of beam's electric field. This phenomenon can lead to fast build up of electron density, known as electron cloud effect - resulting into beam instability coupled to multi-bunches in addition to a single bunch. For MEIC, the estimated threshold ... continued below

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S. Ahmed, J.D. Dolph, G.A. Krafft, T. Satogata, B.C. Yunn September 1, 2011.

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The Medium Energy Electron Ion Collider (MEIC) at Jefferson Lab has been envisioned as a future high energy particle accelerator beyond the 12 GeV upgrade of the existing Continuous Electron Beam Accelerator Facility (CEBAF). Synchrotron radiation from the closely spaced proton bunches in MEIC can generate photoelectrons inside the vacuum chamber and cause secondary emission due to multipacting in the presence of beam's electric field. This phenomenon can lead to fast build up of electron density, known as electron cloud effect - resulting into beam instability coupled to multi-bunches in addition to a single bunch. For MEIC, the estimated threshold value of the electron-cloud density is approximately 5 x 10{sup 12} m{sup -3}. In this paper, we would like to report the self-consistent simulation studies of electron cloud formation for MEIC. The code has been benchmarked against the published data of electron cloud effects observed in LHC. Our first simulations predict increase of electron clouds with the increase of repetition rate. The detailed simulations are under progress and will be reported.

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  • IPAC2011, 4-9 Sep 2011, San Sebastian, Spain

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  • Report No.: JLAB-ACP-11-1444
  • Report No.: DOE/OR/23177-1902
  • Grant Number: AC05-06OR23177
  • Office of Scientific & Technical Information Report Number: 1029309
  • Archival Resource Key: ark:/67531/metadc833906

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  • September 1, 2011

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  • May 19, 2016, 3:16 p.m.

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  • Aug. 3, 2016, 6:04 p.m.

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S. Ahmed, J.D. Dolph, G.A. Krafft, T. Satogata, B.C. Yunn. Study of Electron Cloud for MEIC, article, September 1, 2011; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc833906/: accessed September 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.