Sheet beam model for intense space-charge: with application to Debye screening and the distribution of particle oscillation frequencies in a thermal equilibrium beam Metadata

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Title

  • Main Title Sheet beam model for intense space-charge: with application to Debye screening and the distribution of particle oscillation frequencies in a thermal equilibrium beam

Creator

  • Author: Lund, Steven M.
    Creator Type: Personal
  • Author: Friedman, Alex
    Creator Type: Personal
  • Author: Bazouin, Guillaume
    Creator Type: Personal

Contributor

  • Sponsor: Lawrence Berkeley Laboratory. Accelerator & Fusion Research Division.
    Contributor Type: Organization

Publisher

  • Name: Lawrence Berkeley National Laboratory
    Place of Publication: Berkeley, California
    Additional Info: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (United States)

Date

  • Creation: 2011-01-10

Language

  • English

Description

  • Content Description: A one-dimensional Vlasov-Poisson model for sheet beams is reviewed and extended to provide a simple framework for analysis of space-charge effects. Centroid and rms envelope equations including image charge effects are derived and reasonable parameter equivalences with commonly employed 2D transverse models of unbunched beams are established. This sheet beam model is then applied to analyze several problems of fundamental interest. A sheet beam thermal equilibrium distribution in a continuous focusing channel is constructed and shown to have analogous properties to two- d three-dimensional thermal equilibrium models in terms of the equilibrium structure and Deybe screening properties. The simpler formulation for sheet beams is exploited to explicitly calculate the distribution of particle oscillation frequencies within a thermal equilibrium beam. It is shown that as space-charge intensity increases, the frequency distribution becomes broad, suggesting that beams with strong space-charge can have improved stability.
  • Physical Description: 31

Subject

  • Keyword: Thermal Equilibrium
  • Keyword: Space Charge
  • Keyword: Stability
  • STI Subject Categories: 70
  • Keyword: Oscillations
  • Keyword: Focusing
  • Keyword: Distribution

Source

  • Journal Name: Physical Review Special Topics -- Accelerators and Beams

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Report No.: LBNL-4508E
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 1015568
  • Archival Resource Key: ark:/67531/metadc843372
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