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Photocathode Physics for Photoinjectors 2012

→ America/New_York
700 (Clark Hall)

700

Clark Hall

Cornell University Ithaca, NY 14853
Description
Photocathode Physics for Photoinjectors 2012 Goals of the workshop include: review the state of the art (exclude polarization), discuss the physics of photoemission, identify R&D directions to better understanding of photocathodes: review measurements and theory (better computer codes and modeling of photoemission), discuss new approaches and new materials, identify overlap and coordinate inter-laboratory efforts of mutual interests.
Participants
  • Aleksandr Polyakov
  • Bruce Dunham
  • Carlos Hernandez-Garcia
  • Charles Sinclair
  • Christoph Hessler
  • Daniel Velazquez
  • Daniele Filippetto
  • Daniele Sertore
  • David Dowell
  • Dimitre Dimitrov
  • Donnie Keathley
  • Eliane Lessner
  • Erdong Wang
  • Eric Montgomery
  • Eric Riehn
  • Fay Hannon
  • Fernando Sannibale
  • HEXUAN WANG
  • Ilan Ben-Zvi
  • Ivan Bazarov
  • J. Scott Price
  • Jared Maxson
  • John Smedley
  • Juan Maldonado
  • Jun Feng
  • Karl Smolenski
  • Katherine Harkay
  • Luca Cultrera
  • Martin Schmeißer
  • Masahiro Yamamoto
  • Mauro Trovo
  • Michael Roman
  • Michael Swanwick
  • Miguel Ruiz Oses
  • Mikhail Krasilnikov
  • Pietro Musumeci
  • Renkai Li
  • reza valizadeh
  • Riad Suleiman
  • Richard Hobbs
  • Rong Xiang
  • Shlomy Tubul
  • Shukui Zhang
  • Siddharth Karkare
  • Susanne Schubert
  • Sven Lederer
  • Theodore Vecchione
  • Tim Noakes
  • Triveni Rao
  • W. Andreas Schroeder
  • Wayne Hess
  • Weishi Wan
  • William Graves
  • William Schaff
  • Xianghong Liu
  • Xiuguang JIN
  • Xue Liang
  • Yulin Li
  • Zhigang Pan
  • Zikri Yusof
  • Monday, October 8
    • 8:00 AM
      Coffee break & Registration 700

      700

      Clark Hall

      Cornell University Ithaca, NY 14853
    • Session 1 - Workshop Welcome, Reviews 700

      700

      Clark Hall

      Cornell University Ithaca, NY 14853
      Conveners: Bruce Dunham (Cornell), Triveni Rao (BNL)
      • 1
        Workshop Welcome
        Speaker: Ivan Bazarov (Cornell)
        Slides
        Video
      • 2
        Review of recent European Cathode Workshop
        Speaker: David Dowell (SLAC)
        Slides
        Video
      • 3
        Review of recent U Chicago photocathode/detector workshop
        Speaker: John Smedley (BNL)
        Slides
        Video
      • 4
        Memories of the previous P3 workshop
        Speaker: Triveni Rao (BNL)
        Slides
        Video
    • 9:45 AM
      Coffee break & Registration 700

      700

      Clark Hall

      Cornell University Ithaca, NY 14853
    • Session 2 - New significant developments and relevant measurements 700

      700

      Clark Hall

      Cornell University Ithaca, NY 14853
      Conveners: Howard Padmore (LBNL), John Smedley (BNL), Luca Cultrera (Cornell)
      • 5
        Measurements of transverse momentum of photoelectrons from metals and alkali antimonide semiconductors
        Speaker: Theo Vecchione (LBNL)
        Slides
        Video
      • 6
        Measurement of the chemistry and growth of alkali antimonides using in-situ AFM and XPS
        Speaker: Miguel Ruiz Oses (BNL)
        Slides
        Video
      • 7
        Measuring the growth of alkali antimonides using in-situ XRD and x-ray reflectivity
        Speaker: Susanne Schubert (HBZ)
        Slides
        Video
      • 8
        Open Discussion or Contributed Talks
    • 12:00 PM
      In-room Lunch 700

      700

      Clark Hall

      Cornell University Ithaca, NY 14853
    • Session 2 - New significant developments and relevant measurements 700

      700

      Clark Hall

      Cornell University Ithaca, NY 14853
      • 9
        Fabrication, characterization and use of alkali antimonides in a dc gun
        Speaker: Luca Cultrera (Cornell)
        Slides
        Video
      • 10
        MBE growth of GaAs photcathodes for the Cornell ERL photoinjector and effect of roughness on emittance
        Speaker: Bill Schaff (Cornell)
        Slides
        Video
      • 11
        Surface characterization of GaAs photocathodes and high current operation experience
        Speaker: Carlos Hernandez-Garcia (JLAB)
        Abstract
        Slides
        Video
      • 12
        K2CsSb cathode tests at JLAB
        Speaker: Triveni Rao (BNL)
        Slides
        Video
      • 13
        Open Discussion or Contributed Talks
      • 3:00 PM
        Coffee Break
      • 14
        Development of high performance photocathodes for microscopy and accelerators
        Speaker: Xiuguang Jin (Nagoya University)
        Slides
        Video
      • 15
        Reduction of emittance from metals to less than thermal
        Speaker: Jun Feng (LBNL)
        Slides
        Video
      • 16
        Growth and operation of Pb/Nb phtocathodes in SRF gun
        Speaker: Susanne Schubert (HZB)
        Slides
        Video
      • 17
        Cathode characterization and analysis at DESY
        Speaker: Sven Lederer (DESY)
        Slides
        Video
      • 18
        Workfunction and Quantum Efficiency studies on Cesium Telluride
        Speaker: Katherine HARKAY (ANL)
        Slides
        Video
      • 19
        DMD-Based Quantum Efficiency Mapping and Self-Healing of Hybrid Diffuser Dispensers
        Speaker: Eric Montgomery (UMD)
        Abstract
        Slides
        Video
      • 20
        Operation of the High-Charge PHIN RF Photoinjector with Cs3Sb Cathodes
        Speaker: Christoph Hessler (CERN, Geneva, Switzerland)
        Abstract
        Slides
        Video
      • 21
        Photocathodes for Rossendorf SRF gun
        Speaker: Dr Rong Xiang (Helmholtz-Zentrum Dresden-Rossendorf)
        Abstract
        Slides
      • 22
        Open Discussion or Contributed Talks
    • 6:00 PM
      Cornell lab tours 700

      700

      Clark Hall

      Cornell University Ithaca, NY 14853
  • Tuesday, October 9
    • 8:00 AM
      Coffee break 700

      700

      Clark Hall

      Cornell University Ithaca, NY 14853
    • Session 3 - Photocathode physics I: new insights in theory and modeling 700

      700

      Clark Hall

      Cornell University Ithaca, NY 14853
      Conveners: D. A. Dimitrov (TechX), Ivan Bazarov (Cornell), Kevin Jensen (NRL)
      • 23
        Monte-Carlo simulations of Charge transport and photoemission from GaAs photcathodes
        Speaker: Siddharth Karkare (Cornell)
        Slides
        Video
      • 24
        Modeling Electron Emission from Diamond-Amplified cathodes
        Speaker: D. A. Dimitrov (TechX)
        Slides
      • 25
        Monte Carlo Scattering Corrections to Moments-Based Emission Models
        Speaker: Eric MONTGOMERY (UMD)
        Abstract
        Slides
        Video
      • 26
        Open Discussion
      • 10:00 AM
        Coffee Break
      • 27
        Models of effect of roughness on emittance
        Speaker: Dave Dowell (SLAC)
        Slides
        Video
      • 28
        One-step model of photoemission and extensions to the three-step model
        Speaker: Weishi Wan (LBNL)
        Slides
        Video
      • 29
        Modeling the Resupply, Diffusion, and Evaporation of Cesium Based Dispenser Photocathodes
        Speaker: Zhigang Pan (NRL)
        Slides
        Video
      • 30
        Measurements and modeling of space charge assisted photoemission at PITZ
        Speaker: Mikhail Krasilnikov (DESY)
        Slides
        Video
      • 31
        Open Discussion or Contributed Talks
    • 12:00 PM
      In-room lunch 700

      700

      Clark Hall

      Cornell University Ithaca, NY 14853
    • Session 4 - Photocathode physics II: towards photocathode material engineering 700

      700

      Clark Hall

      Cornell University Ithaca, NY 14853
      Conveners: Bruce Dunham (Cornell), Katherine Harkay (ANL), Sven Lederer (DESY), Wayne Hess (PNNL)
      • 32
        Redesigning Cs2Te: Workfunction Lowering and Quantum-Efficiency Preservation via Acetylation
        Speaker: Katherine Harkay (ANL)
        Abstract
        Slides
        Video
      • 33
        Surface science techniques
        Speaker: Wayne Hess (PNNL)
        Slides
        Video
      • 34
        Electron effective mass: Emittance and efficiency
        Speaker: Andreas Schroeder (UIC)
        Slides
        Video
      • 35
        Status OF CsBr Photocathodes
        Speaker: Dr Juan Maldonado (SLAC National Accelerator Laboratory)
        Abstract
        Slides
      • 36
        Nanostructured Photoelectron Sources for Electron Beamlet Array Generation
        Speakers: Dr Michael Swanwick (Massachusetts Institute of Technology), Dr Richard Hobbs (Massachusetts Institute of Technology)
        Abstract
        Slides
      • 37
        High Aspect Ratio Si Photoelectron Emitter Arrays
        Speaker: Donnie Keathley (MIT)
        Abstract
        Slides
      • 38
        Open Discussion or Contributed Talks
      • 3:00 PM
        Coffee Break
      • 39
        Nano-cavity plasmonic photocathodes
        Speaker: Alex Polyakov (LBNL)
        Slides
      • 40
        Grating based plasmonic photocathodes
        Speaker: Pietro Musumeci (UCLA)
        Abstract
        Slides
      • 41
        Open Discussion
    • 4:00 PM
      Cayuga lake boat trip 16:10 board bus near Clark Hall

      16:10 board bus near Clark Hall
  • Wednesday, October 10
    • Session 5 - Future outlook and collaborations 700

      700

      Clark Hall

      Cornell University Ithaca, NY 14853
      Conveners: Carlos Hernandez-Garcia (JLAB), Daniele Sertore (INFN), Fay Hannon (JLAB), Ivan Bazarov (Cornell)
      • 42
        Cathode production and supply, useful things to track, photocathode website
        Speaker: Daniele Sertore (INFN)
        Slides
      • 43
        LBNL gun as a test venue for various cathodes
        Speaker: Fernando Sannibale (LBNL)
        Slides
      • 44
        Update on the photocathode wiki-project
        Speaker: Siddharth Karkare (Cornell)
        Slides
      • 45
        German-Russian collaboration on high-brightness photocathodes
        Speaker: Martin Schmeißer (Helmholtz Centre Berlin)
        Slides
      • 46
        Open Discussion or Contributed Talks
      • 47
        Summary of the workshop
        Speaker: Charlie Sinclair
        Slides
      • 10:15 AM
        Coffee Break
      • 48
        Outlook and 2-year plans from each group (1 slide in advance)
        Slides
      • 49
        Open Discussion for Future Collaboration
    • 12:00 PM
      Adjourn 700

      700

      Clark Hall

      Cornell University Ithaca, NY 14853
    • 12:05 PM
      Lunch (on your own) 700

      700

      Clark Hall

      Cornell University Ithaca, NY 14853
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