Photocathode Physics for Photoinjectors Workshop

Session

Theory

Oct 3, 2023, 3:20 PM

Charles B. Wang Center (Stony Brook University)

Conveners

Theory

• Kevin Jensen

Theory

• Dimitre Dimitrov

12. Modeling Optical Interference Effects for Optimization of Electron Emission Properties from Thin Film Semiconductor Photocathodes

Dr Dimitre Dimitrov

10/3/23, 3:20 PM

13. Theory of Photoemission from Cathodes with Disordered Surfaces

Dr Pallavi Saha

10/3/23, 3:45 PM

14. Electron Scattering Processes in Photoemission: The Franck-Condon Effect

Dr Andreas Schroeder

10/3/23, 4:10 PM

15. Monte Carlo Modeling of Spin-Polarized Photoemission

Dr Oksana Chubenko

10/3/23, 4:35 PM

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...

24. Tracing attosecond dynamics of electron emission from metallic nanotip

Dr Tomas Chlouba

10/4/23, 1:30 PM

25. A DELTA BARRIER IN A WELL AND ITS GENERALIZATION FOR EMISSION STUDIES

Dr Kevin Jensen

10/4/23, 1:55 PM

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...

26. Beam Transport Parameter Sensitivities Using Adjoint Methods for 2D Axisymmetric Systems in Static Fields with MICHELLE

Dr John Petillo

10/4/23, 2:20 PM

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...