Performance of the 2 MeV microwave gun for the SSRL 150 MeV linac

Conference · Sat Sep 01 04:00:00 EDT 1990

OSTI ID:6183102

Borland, M; Weaver, J N; Wiedemann, H ^[1]; Green, M C; Nelson, L V ^[2]; Miller, R H ^[3]; Tanabe, E ^[4]

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1. Stanford Univ., CA (USA). Stanford Synchrotron Radiation Lab.
2. Varian Associates, Inc., Palo Alto, CA (USA)
3. Stanford Linear Accelerator Center, Menlo Park, CA (USA)
4. AET Associates, Cupertino, CA (USA) Varian Associates, Inc., Palo Alto, CA (USA)

As described in a previous article, the preinjector linac for SSRL's 3 GeV synchrotron is fed by a 2 MeV, 1.5 A, low-emittance microwave gun, consisting of a thermionic cathode mounted in the first cell of a 1-1/2-cell S-band cavity. In this article, we report on the successful operation of the low-emittance gun, the longitudinally-bunching alpha-magnet, and the three-microbunch FET-pulsed beam-chopper. Simulations predict a normalized rms emittance at the gun exit of less than 10 {pi}{center dot}m{sub e}c{center dot}{mu}m; chromatic effects in transport optics increase this to approximately 30 {pi}{center dot}m{sub e}c{center dot}{mu}m. The gun was specifically designed to have a longitudinal phase-space suited to magnetic compression, as a result of which we predict that peak currents in excess of 300 A in a 1 ps bunch are feasible with the existing alpha-magnet. Results of simulations and experiments will be presented and compared. 13 refs., 9 figs.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 6183102
• Report Number(s): SLAC-PUB-5333; CONF-9009123--60; ON: DE91004688
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430302* -- Particle Accelerators-- Injection & Extraction Systems
ACCELERATION
ACCELERATORS
AMPLIFIERS
BEAM BUNCHING
BEAM DYNAMICS
BEAM INJECTION
BEAM PULSERS
BEAM TRANSPORT
BEAMS
COMPRESSION
CYCLIC ACCELERATORS
ELECTRON BEAMS
ELECTRONIC EQUIPMENT
EQUIPMENT
LEPTON BEAMS
LINEAR ACCELERATORS
MAGNETIC COMPRESSION
MATHEMATICAL SPACE
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
PARTICLE BEAMS
PERFORMANCE
PHASE SPACE
RF SYSTEMS
SPACE
SYNCHROTRONS
THERMIONIC EMITTERS