Title :
High-brightness electron injectors: a review
Author :
Sheffield, Richard L.
Author_Institution :
Los Alamos Nat. Lab., NM, USA
Abstract :
The approaches now being explored for attaining intense, bright electron beams are described. The methods for producing bright electron beams include photocathode-based short-pulse injectors; DC electrostatic accelerator sources; long-pulse beams, which are then compressed in time using subharmonic bunching; combining first and third harmonics in an accelerator to attain the equivalent of high-gradient DC fields; and LaB 6 RF guns. For several of the approaches, the temporal length of the electron pulse is decreased after acceleration to relativistic energies by impressing an energy spread on the electron bunch and using a nonisochronous beam-transport system to increase the peak current
Keywords :
electron accelerators; electrostatic accelerators; ion sources; reviews; DC electrostatic accelerator sources; LaB6 RF guns; electron pulse temporal length; first harmonics; high-brightness electron injectors; high-gradient DC fields; long-pulse beams; nonisochronous beam-transport system; peak current; photocathode-based short-pulse injectors; relativistic energies; subharmonic bunching; third harmonics; Acceleration; Brightness; Cathodes; Electron accelerators; Electron beams; Electron sources; Optical beams; Optical pulses; Particle beams; Undulators;
Conference_Titel :
Particle Accelerator Conference, 1989. Accelerator Science and Technology., Proceedings of the 1989 IEEE
Conference_Location :
Chicago, IL
DOI :
10.1109/PAC.1989.73365
