X-Band Photo injector Beam Dynamics Metadata

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Title

  • Main Title X-Band Photo injector Beam Dynamics

Creator

  • Author: Zhou, Feng
    Creator Type: Personal
    Creator Info: Stanford Linear Accelerator Center, Menlo park, CA 94025, USA
  • Author: Adolphsen, Chris
    Creator Type: Personal
    Creator Info: Stanford Linear Accelerator Center, Menlo park, CA 94025, USA
  • Author: Ding, Yuantao
    Creator Type: Personal
    Creator Info: Stanford Linear Accelerator Center, Menlo park, CA 94025, USA
  • Author: Li, Zenghai
    Creator Type: Personal
    Creator Info: Stanford Linear Accelerator Center, Menlo park, CA 94025, USA
  • Author: Vlieks, Arnold
    Creator Type: Personal
    Creator Info: Stanford Linear Accelerator Center, Menlo park, CA 94025, USA

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: SLAC National Accelerator Laboratory
    Place of Publication: United States
    Additional Info: SLAC National Accelerator Laboratory (SLAC)

Date

  • Creation: 2011-12-13

Language

  • English

Description

  • Content Description: SLAC is studying the feasibility of using an X-band RF photocathode gun to produce low emittance bunches for applications such as a mono-energetic MeV {gamma} ray source (in collaboration with LLNL) and a photoinjector for a compact FEL. Beam dynamics studies are being done for a configuration consisting of a 5.5-cell X-band gun followed by several 53-cell high-gradient X-band accelerator structures. A fully 3D program, ImpactT, is used to track particles taking into account space charge forces, short-range longitudinal and transverse wakefields, and the 3D rf fields in the structures, including the quadrupole component of the couplers. The effect of misalignments of the various elements, including the drive-laser, gun, solenoid and accelerator structures, are evaluated. This paper presents these results and estimates of the expected bunch emittance vs cathode gradient, and the effects of mixing between the fundamental and off-frequency longitudinal modes. An X-band gun at SLAC has been shown to operate reliably with a 200 MV/m acceleration gradient at the cathode, which is nearly twice the 115 MV/m acceleration gradient in the LCLS gun. The higher gradient should roughly balance the space charge related transverse emittance growth for the same bunch charge but provide a 3-4 times shorter bunch length. The shorter length would make the subsequent bunch compression easier and allow for a more effective use of emittance exchange. Such a gun can also be used with an X-band linac to produce a compact FEL or g ray source that would require rf sources of only one frequency for beam generation and acceleration. The feasibility of using an X-band rf photocathode gun and accelerator structures to generate high quality electron beams for compact FELs and g ray sources is being studied at SLAC. Results from the X-band photoinjector beam dynamics studies are reported in this paper.

Subject

  • Keyword: Acceleration
  • Keyword: Compression
  • Keyword: Space Charge
  • Keyword: Cathodes
  • Keyword: Solenoids
  • Keyword: Rf Systems
  • STI Subject Categories: 43 Particle Accelerators
  • Keyword: Quadrupoles
  • Keyword: Electron Beams
  • Keyword: Accelerators,Accphy
  • Keyword: Linear Accelerators
  • Keyword: Photocathodes
  • Keyword: Configuration
  • Keyword: Accelerators
  • Keyword: Beam Dynamics
  • Keyword: Stanford Linear Accelerator Center Accelerators,Accphy

Source

  • Journal Name: Conf.Proc.C100523:TUPEC022,2010; Conference: 1st International Particle Accelerator Conference: IPAC'10, 23-28 May 2010, Kyoto, Japan

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.: SLAC-PUB-14572
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 1032760
  • Archival Resource Key: ark:/67531/metadc832900

Note

  • Display Note: http://www.slac.stanford.edu/cgi-wrap/pubpage?slac-pub-14572.html
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