Ultra-low Emittance Photocathodes for Accelerators and Femtosecond Electron Diffraction
- Cornell Univ., Ithaca, NY (United States)
To advance low emittance photocathodes suitable for accelerators and ultrafast electron diffraction the following directions have been investigated: 1) growth and characterization of alkali photocathodes in the new regime where their intrinsic emittance is limited by the material lattice temperature; 2) extending Monte Carlo electron transport modeling in photocathodes to cryogenic temperatures; 3) numerical simulations of sharp photo-emitting tips that enhance the electric field available; and 4) exploration of new protective coatings on III-V semiconductor photocathodes as robust high efficiency low-emittance sources of electrons. The key results achieved in these four areas as enabled by this grant are highlighted in this final technical report.
- Research Organization:
- Cornell Univ., Ithaca, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- SC0014338
- OSTI ID:
- 1483870
- Report Number(s):
- DOE-CORNELL-0014338
- Country of Publication:
- United States
- Language:
- English
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