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Accelerator Seminars


Accelerator Seminar Committee:
  Chair: Joe Grames / Past Chair: Anne-Marie Valente

    Members: Carlos Hernandez- Garcia, Gianluigi Ciovati, Vasiliy Morozov and
Steve Benson


 Accelerator Seminars will be scheduled weekly on Thursdays from 11:00 a.m. - 12:00 p.m.
If you would like to schedule a seminar, please contact Joe Grames for approval.

 

DATE: August 27, 2015

TIME: 11:00 a.m.

TITLE: Macroscopic Field Emission

SPEAKER: Faya Wang, SLAC National Accelerator Laboratory

ABSTRACT: Electron emission from metal surfaces in a high field environment generates local electric fields at the emission sites that can build up over time to enhance the emission. This build up depends on the rf frequency and in the case of a waveguide, the group velocity. This phenomenon may explain the observed dependence of breakdown rates on the rf characteristics of the structures, in particular, those relating to rf power flow.

 

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