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    Photocathode Physics for Photoinjectors Workshop

    12–14 Oct 2010
    Brookhaven National Laboratory
    US/Eastern timezone

    Session

    Session 3 - Photoemission Physics I: Theory

    13 Oct 2010, 08:30
    Instrumentation Division, Bldg. 535B, Room A-122 (Brookhaven National Laboratory)

    Instrumentation Division, Bldg. 535B, Room A-122

    Brookhaven National Laboratory

    20 N. Technology St. Upton, NY 11973

    Description

    The first talks in this session provide a concise introduction into the subject, identify physics behind Spicer Model from Metals, then its extension to semiconductors, importance of the surface, and to provide the basis for physics carried on in Session 4.

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    1. 12. Modeling of Photoemission
      Kevin Jensen (NRL)
      13/10/2010, 08:30
      40 min. talk/5 min. questions To cover metals, antimonides, tellurides, NEA.
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    2. 13. Physics of Semiconductor NEA Photocathodes
      Charles Sinclair (Cornell Univ.)
      13/10/2010, 09:15
      30 min. talk/5 min. questions
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    3. 15. Photoemission Emittance
      John Schmerge (SLAC)
      13/10/2010, 09:50
      30 min. talk/5 min. questions
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    4. 16. Discussion
      13/10/2010, 10:40
      Discussion charge: Is 3 step Spicer model sufficient to explain practical photocathodes? If not, what are the limitations? pros/cons of each family--what knobs exist to tune the performance: QE vs. wavelength, better lifetime, faster response, lower thermal emittance; what physics parts are poorly understood and need a better theory effort; semiconductor properties needed for quantitative...
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    5. 17. In-room Lunch
      13/10/2010, 12:30
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