Performance of the Brookhaven photocathode rf gun

Conference · Tue Dec 31 04:00:00 EST 1991

OSTI ID:10112137

Batchelor, K; Ben-Zvi, I; Fernow, R C; Fischer, J; Fisher, A S; Gallardo, J; Ingold, G; Kirk, H G; Leung, K P; Malone, R; Pogorelsky, I; Srinivasan-Rao, T; Rogers, J; Tsang, T; Sheehan, J; Ulc, S; Woodle, M; Xie, J; Zhang, R S ^[1]; Lin, L Y ^[2] ; McDonald, K T; Russell, D P ^[3]; Hung, C M ^[4]; Wang, X J ^[5]

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1. Brookhaven National Lab., Upton, NY (United States)
2. Columbia Univ., New York, NY (United States). Dept. of Applied Physics
3. Princeton Univ., NJ (United States). Dept. of Physics
4. State Univ. of New York, Stony Brook, NY (United States). Dept. of Physics
5. California Univ., Los Angeles, CA (United States). Dept. of Physics

The Brookhaven Accelerator Test Facility (ATF) uses a photocathode rf gun to provide a high-brightness electron beam intended for FEL and laser-acceleration experiments. The rf gun consists of 1{1/2} cells driven at 2856 MHz in {pi}-mode with a maximum cathode field of 100 MV/m. To achieve long lifetimes, the photocathode development concentrates on robust metals such as copper, yttrium and samarium. We illuminate these cathodes with a 10-ps, frequency-quadrupled Nd:YAG laser. We describe the initial operation of the gun, including measurements of transverse and longitudinal emittance, quantum efficiencies, and peak current. The results are compared to models.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 10112137
• Report Number(s): BNL--46679; CONF-9108118--38; ON: DE92005008; IN: CAP 75-ATF--91C
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430302
BEAM EMITTANCE
ELECTRON BEAMS
ELECTRON GUNS
FREE ELECTRON LASERS
INJECTION AND EXTRACTION SYSTEMS
NEODYMIUM LASERS
PERFORMANCE
PHOTOCATHODES
RF SYSTEMS