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    Photocathode Physics for Photoinjectors Workshop

    3–5 Oct 2023
    Stony Brook University
    US/Eastern timezone

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    Contribution List

    38 out of 38 displayed
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    1. 1. Welcome
      Dr Luca Cultrera (BNL)
      03/10/2023, 08:40
    2. 2. EWPAA 2022 Highlight
      Dr Daniele Sertore
      03/10/2023, 08:50
    3. 3. Electron Sources for Particle Accelerators
      Dr Yine Sun
      03/10/2023, 09:25
    4. 4. Epitaxial growth of the cesium antimonide photocathode
      Chad Pennington
      03/10/2023, 10:15
    5. 5. Epitaxial growth of cesium potassium antimonide photocathode
      Dr Kali Mondal
      03/10/2023, 10:40
    6. 6. Demonstration of thermal limit to mean transverse energy from Cesium Antimonide Photocathode
      Alimohammad Kachwala
      03/10/2023, 11:05
    7. 7. Na-K-Sb photocathode development at HZB
      Dr Julius Kuehn
      03/10/2023, 11:30
    8. 8. Development of Multialkali antimonides photocathodes for high-brightness photoinjectors
      Dr Sandeep Mohanty
      03/10/2023, 13:10
    9. 9. R&D of Very High Frequency (VHF) gun for SHINE project at Tsinghua University.
      Dr Yingchao Du
      03/10/2023, 13:35
    10. 10. Progress report on an X-band Ultra-High Gradient Photoinjector
      Dr Gongxiaohui Chen
      03/10/2023, 14:00
    11. 11. Successful operation of K2CsSb photocathode in DC-SRF-II gun
      Dr Huamu Xie
      03/10/2023, 14:25
    12. 12. Modeling Optical Interference Effects for Optimization of Electron Emission Properties from Thin Film Semiconductor Photocathodes
      Dr Dimitre Dimitrov
      03/10/2023, 15:20
    13. 13. Theory of Photoemission from Cathodes with Disordered Surfaces
      Dr Pallavi Saha
      03/10/2023, 15:45
    14. 14. Electron Scattering Processes in Photoemission: The Franck-Condon Effect
      Dr Andreas Schroeder
      03/10/2023, 16:10
    15. 15. Monte Carlo Modeling of Spin-Polarized Photoemission
      Dr Oksana Chubenko
      03/10/2023, 16:35

      Highly efficient spin-polarized electron sources play a pivotal
      role in advancing particle physics experiments, spin-polarized electron microscopy, and materials sciences. Developing such sources requires in-depth modeling of the mechanisms influencing their performance. The Monte Carlo approach is one of the very few tools capable of addressing the subtleties of material band structure and...

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    16. 16. On chip waveguide integrated photocathode
      Hyun uk Chae
      04/10/2023, 08:30
    17. 17. Development of Air Stable Silicon Photoemitter with Electronically Tunable Negative Electron Affinity
      Dr Ragib Ahsan
      04/10/2023, 08:55
    18. 18. Ab Initio Study of 2D Materials as Photocathode Capping Layers and Potential Photocathodes
      Tyler Wu
      04/10/2023, 09:20
    19. 19. Photocathode sources studies for UED/UEM at Tsinghua University
      Dr Renkai Li
      04/10/2023, 10:15
    20. 20. Ultrafast two-electron correlations from metal needle tips
      Dr Tomas Chlouba
      04/10/2023, 10:40
    21. 21. Bright Electron Beams from Plasmonic Spiral Photocathode
      Alimohammed Kachwala
      04/10/2023, 11:05
    22. 22. The Transverse Energy Spread Spectrometer (TESS) and recent experimental results to characterise photocathode performance
      Dr Lee Jones
      04/10/2023, 11:30

      The interplay between a photocathode electron source, the laser driving the photoemission and the electric field into which those electrons emerge define the electron source emittance. The need to characterise photocathode performance and specifically to measure the transverse energy spread of photoemitted electrons is therefore crucial to minimise emittance and maximise beam brightness.
      The...

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    23. 23. Towards construction of a novel nm resolution MeV-STEM for imaging of thick biological samples
      Dr Xi Yang
      04/10/2023, 11:55
    24. 24. Tracing attosecond dynamics of electron emission from metallic nanotip
      Dr Tomas Chlouba
      04/10/2023, 13:30
    25. 25. A DELTA BARRIER IN A WELL AND ITS GENERALIZATION FOR EMISSION STUDIES
      Dr Kevin Jensen
      04/10/2023, 13:55

      One of the simplest models of tunneling makes use of a δ-function barrier V (x) = ¯h2γδ(x)/2m which depends on a single parameter γ, making it a useful tool to examine a variety of technologically important applications (i) theoretical predictions of photoemission from materials such as cesiated GaAs surfaces often include a high and thin barrier at the surface attributed to a submonolayer...

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    26. 26. Beam Transport Parameter Sensitivities Using Adjoint Methods for 2D Axisymmetric Systems in Static Fields with MICHELLE
      Dr John Petillo
      04/10/2023, 14:20

      The adjoint method promises to greatly improve the calculation of the effect of fabrication tolerances and may also lead to highly efficient optimization algorithms for general charged-particle beamline design. The adjoint method applied to an electron beam source design is discussed. We note that such methods vastly improve computational efficiency by requiring only two or three runs of the...

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    27. 27. LANL high gradient photoinjector and photocathode projects, technology, and plans
      Dr Anna Alexander
      04/10/2023, 15:15
    28. 28. S-band photocathode based injector plan for Korea-4GSR
      Dr Chang-Ki Min
      04/10/2023, 15:40
    29. 29. Some of the Photocathode Science at SLAC
      Dr Theo Vecchione
      04/10/2023, 16:05
    30. 30. LEReC high current experience with alkali cathode
      Dr Xiaofeng Gu
      04/10/2023, 16:30
    31. 31. Potential applications and requirements of photoelectron sources for Metrology
      Dr Gil Delgado
      05/10/2023, 08:30

      Advanced semiconductor manufacturing requires high-end metrology to have successful semiconductor process control.
      Currently, high-end metrology requires lab tools to assist in semiconductor metrology. However, this is slow, expensive, and, often destructive. Fabs need inline metrology systems.
      New memory and logic semiconductor designs and architectures are transitioning to 3-D structures....

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    32. 32. Plasmonic vortices as sources of angular momentum electron beams
      Dr Hrvoje Petek
      05/10/2023, 08:55

      The excitation laser polarization and coupling geometry metastructures define the spin-orbit interaction of surface plasmon polaritons at metal-vacuum interfaces. We image the topological plasmonic fields by imaging nonlinear electron emission by photoemission electron microscopy. We record with nanometer spatial and femtosecond temporal resolution the generated space-time spin textures of...

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    33. 33. Optical Near Field Electron Microscopy
      Dr John Smedley
      05/10/2023, 09:20
    34. 34. Recent Advances in Superlattice GaAs/GaAsP Photocathodes for Spin-Polarized Electron Sources
      Dr Jyoti Biswas
      05/10/2023, 10:15

      Abstract:

      Photocathodes based on GaAs and other III–V semiconductors are capable of producing highly spin-polarized electron beams. GaAs/GaAsP superlattice photocathodes exhibit high spin polarization; however, the quantum efficiency (QE) is limited to less than 1%. To increase the QE, GaAs/GaAsP superlattice photocathodes with a Distributed Bragg Reflector (DBR) are usually used...

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    35. 35. Molecular Beam Epitaxy of Strained Superlattice InAlGaAs/AlGaAs Spin-Polarized Photocathodes Implemented with Random and Digital Alloying
      Aaron Engel
      05/10/2023, 10:40
    36. 36. Cost-effective Atomic Layer Deposition growth of chalcogenide-based polarized electron sources (CdTe, ZnTe, MnTe, etc.)
      Dr Harish Bhandari
      05/10/2023, 11:05
    37. 37. Polarized Photocathodes for Future Applications
      Samuel Levenson
      05/10/2023, 11:30
    38. 38. Polarized source needs for the EIC program
      Dr Erdong Wang
      05/10/2023, 11:55

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