EMITTANCE MEASUREMENTS WITH A PULSED POWER PHOTO INJECTOR.
This paper describes measurements of beam spot size and emittance of electron beams from a pulsed power photo-injector operating at 150keV output energy. In these measurements, electron bunches with charge up to 20 pC were created by a 300 fs pulse duration Ti: Sapphire laser system illuminating a polished copper cathode. Images of the electron beam were captured at two locations downstream from a solenoid focusing magnet. The focal spot size was studied as a function of bunch charge and accelerating gradient. Beam waists down to 85 microns were obtained. The focal spot size was found to be dominated by spherical aberration at low beam charges, however the beam trajectory is in good agreement with simulation.
- Research Organization:
- BROOKHAVEN NATIONAL LABORATORY (US)
- Sponsoring Organization:
- DOE/SC (US)
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 15006571
- Report Number(s):
- BNL-69542-CP; R&D Project: LS02; KA0403; TRN: US0401086
- Resource Relation:
- Conference: PARTICLE ACCELERATOR CONFERENCE 2003, PORTLAND, OR (US), 05/12/2003--05/16/2003; Other Information: PBD: 12 May 2003
- Country of Publication:
- United States
- Language:
- English
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