A novel, high gradient, laser modulated, pulsed electron gun
- Brookhaven Technology Group Inc., Stony Brook, NY (United States)
- Brookhaven National Lab., Upton, NY (United States)
This paper describes a high current, fast pulsed, laser excited, electron gun to operate at energies between 1 and 5 MeV. The authors present the design of the high voltage pulse generator, and the laser system, the experimental results obtained with copper cathode in fields > 1 GV/m and diode geometry optimized for the highest brightness using computer simulations. This electron source will generate an electron beam of brightness approaching 10{sup 16} A/m{sup 2} rad{sup 2}, which is 2 orders of magnitude greater than the present level of 10{sup 14} A/m{sup 2} rad{sup 2}, a parameter highly sought after for future linear colliders and short wavelength FELs. It will also be used to study properties of materials in the presence of high fields such as dark current emission and high voltage breakdown characteristics that will provide information critical to the development of high frequency accelerating structures. In addition, Bremsstrahlung radiation from these ultra short relativistic electrons, is expected to be an efficient source of x-ray photons for imaging transient effects in biological samples, microlithography and micromachining. These excellent beam qualities will be augmented for the first time by the simplicity and compactness of the device resulting in an efficient, affordable product with superior performance and unique capabilities.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States)
- DOE Contract Number:
- AC02-98CH10886; FG02-97ER82336
- OSTI ID:
- 307899
- Report Number(s):
- BNL-65895; CONF-980931-; ON: DE99001512; BR: KA0403000; TRN: 99:003176
- Resource Relation:
- Conference: 17. international conference on high energy accelerators (HEACC`98), Dubna (Russian Federation), 7-12 Sep 1998; Other Information: PBD: Sep 1998
- Country of Publication:
- United States
- Language:
- English
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