Status of high polarization DC high voltage Gallium Arsenide photoelectron guns
- Resource Type
- Conference
- Authors
- Poelker, M.; Adderley, P.; Brittian, J.; Clark, J.; Grames, J.; Hansknecht, J.; McCarter, J.; Stutzman, M.L.; Suleiman, R.; Surles-Law, K.
- Source
- 2007 IEEE Particle Accelerator Conference (PAC) Particle Accelerator Conference, 2007. PAC. IEEE. :3756-3760 Jun, 2007
- Subject
- Fields, Waves and Electromagnetics
Engineered Materials, Dielectrics and Plasmas
Nuclear Engineering
Robotics and Control Systems
Polarization
Voltage
Gallium arsenide
Guns
Cathodes
Particle beams
Electron beams
Colliding beam accelerators
Research and development
Hydrogen
- Language
- ISSN
- 1944-4680
2152-9582
Users receive very high beam polarization from reliable GaAs photoelectron guns at facilities worldwide. Satisfaction with beam quality (and a number of lab closures) has reduced the level of polarized source R&D from the heyday of l990s. However, new experiments and new accelerators proposals including high current unpolarized machines, require GaAs photoguns with capabilities that exceed todays state of the art. This submission describes the capabilities of today's high-polarization DC high voltage GaAs photoguns and discusses issues that must be addressed to meet new demands.