Commissioning results of the next generation photoinjector
- California Univ., Los Angeles, CA (United States)
- Brookhaven National Lab., Upton, NY (United States)
The Next Generation Photoinjector (NGP) developed by the BNL SLAC / UCLA collaboration was installed at the Brookhaven National Laboratories Accelerator Test Facility (ATF). The commissioning results and performance of the photocathode injector are present. The Next Generation Photoinjector consists of the symmetrized BNL/SLAC/UCLA 1.6 cell S-band Photocathode RF gun and a single solenoidal magnet for transverse emittance compensation. The highest acceleration field achieved on the cathode is 150 m V, and the RF guns normal operating field is 130 MV/m. The quantum efficiency of the copper cathode was measured to be 4.5 x 10{sup -5}`. The transverse emittance and bunch length of the photoelectron beam were measured. The optimized rms normalized emittance for a charge of 300 pC is 0.77 {pi} mm mrad. The bunch length dependency of photoelectron beam on the RF gun phase and acceleration fields were experimentally investigated.
- Research Organization:
- Brookhaven National Lab., Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 459768
- Report Number(s):
- BNL--63808; SLAC-PUB--7392; CONF-9610210--11; ON: DE97002909
- Country of Publication:
- United States
- Language:
- English
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