MODELING AND MEASUREMENTS OF THE DUVFEL PHOTOINJECTOR CAVITY RF PROPERTIES.
The 1.6 cell S-band photoinjector cavity has been in operation at the DUVFEL at BNL for the past year. Initial beam measurements indicated a higher than expected emittance and beam divergence at the exit of the gun. field imbalance in the two cells was suspected, but lack of field probes in the cavity prohibited direct confirmation. A detailed SUPERFISH model was constructed of the cavity assembly. Field balance as a function of cathode plate and tuner position was determined using the model. A series of calibrated measurements of both the cavity RF properties and the delivered RF power was undertaken. Electron beam properties were also measured as function of cavity tune. Significant improvements in beam quality were achieved. The simulations and measurements are presented.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- Doe - Office Of Energy Research
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 914487
- Report Number(s):
- BNL-68472; R&D Project: LS1; KC0204011; TRN: US200809%%270
- Resource Relation:
- Conference: PARTICLE ACCELERATOR CONFERENCE 2001; CHICAGO, IL; 20010618 through 20010622
- Country of Publication:
- United States
- Language:
- English
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