Modeling and Simulations of Electron Emission from Diamond-Amplified Cathodes
Emission of electrons from a diamond-amplified cathode was recently demonstrated. This experiment was based on a promising new concept for generation of high-current, high-brightness, and low thermal emittance electron beams. The measurements from transmission and emission experiments have shown the potential to realize the diamond-amplified cathode concept. However, the results indicate that the involved physical properties should be understood in greater detail to build diamond cathodes with optical properties. We have already made progress in understanding the secondary electron generation and charge transport in diamond with the models we implemented in the VORPAL computational framework. We have been implementing models for electron emission from diamond and will present results from 3D VORPAL simulations with the integrated capabilities on generating electrons and holes, initiated by energetic primary electrons, propagation of the charge clouds, and then the emission of electrons into diamond. We will discuss simulation results on the dependence of the electron emission on diamond surface properties.
- Research Organization:
- BROOKHAVEN NATIONAL LABORATORY (BNL)
- Sponsoring Organization:
- USDOE SC OFFICE OF SCIENCE (SC)
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 1037692
- Report Number(s):
- BNL--96625-2011-JA; KA-04
- Journal Information:
- PAC11 OC/IEEE, Journal Name: PAC11 OC/IEEE
- Country of Publication:
- United States
- Language:
- English
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