Software for Modeling and Design of Robust GaAs Photocathodes

Award Information
Agency:
Department of Energy
Branch
n/a
Amount:
$149,974.00
Award Year:
2011
Program:
SBIR
Phase:
Phase I
Contract:
DE-FG02-11ER90132
Agency Tracking Number:
97125
Solicitation Year:
2011
Solicitation Topic Code:
14 a
Solicitation Number:
DE-FOA-0000413
Small Business Information
Tech-x Corporation
5621 Arapahoe Ave, Boulder, CO, 80303-1379
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
806486692
Principal Investigator:
Dimitre Dimitrov
Dr.
(303) 443-2657
dad@txcorp.com
Business Contact:
Laurence Nelson
Mr.
(720) 974-1856
lnelson@txcorp.com
Research Institution:
Stub




Abstract
The successful operation of the Department of Energy (DOE) X-ray light sources, free electron laser (FEL), and linear accelerator facilities depends on providing reliable photocathodes for generation of low emittance, high-brightness electron beams using conventional lasers. Experiments on GaAs-based photocathodes have demonstrated the potential to generate high-brightness, unpolarized and polarized, electron beams with low emittance. However, high-fidelity simulation capabilities are needed to design and engineer robust GaAs photocathodes that meet or exceed the desired operational parameters for the DOE facilities. Three dimensional, particle-in-cell (PIC) codes can accurately simulate the evolution of electron beams in accelerator cavities but lack algorithms for modeling the physics of electron emission from photocathodes. We will develop and implement software code for modeling electron emission from GaAs photocathodes within the VORPAL Computational Framework to enable simulations of the complete electron generation process including creation of electron-hole pairs due to photon absorption, transport of charge carriers, and emission from negative electron affinity surfaces.Commercial Applications and Other Benefits: The proposed code for high-fidelity simulations of GaAs photocathodes will directly benefit DOE scientists designing electron sources for its user facilities. The new simulation capabilities will also allow the existing PIC code VORPAL (already commercially distributed) to increase its potential for generating further commercial revenue when used in the industry to design semiconductor devices.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government