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

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

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Abstract

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.

Authors:

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

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

Publication Date:: 1990-09-01

Research Org.:: Stanford Linear Accelerator Center, Menlo Park, CA (USA)

Sponsoring Org.:: DOE/ER

OSTI Identifier:: 6183102

Report Number(s):: SLAC-PUB-5333; CONF-9009123-60
ON: DE91004688; TRN: 91-000759

DOE Contract Number:: AC03-76SF00515

Resource Type:: Conference

Resource Relation:: Conference: Linear accelerator conference, Albuquerque, NM (USA), 9-14 Sep 1990

Country of Publication:: United States

Language:: English

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

Citation Formats


                    Borland, M, Weaver, J N, Wiedemann, H, Green, M C, Nelson, L V, Miller, R H, and Tanabe, E. Performance of the 2 MeV microwave gun for the SSRL 150 MeV linac.  United States: N. p., 1990. 
        Web.

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                    Borland, M, Weaver, J N, Wiedemann, H, Green, M C, Nelson, L V, Miller, R H, & Tanabe, E. Performance of the 2 MeV microwave gun for the SSRL 150 MeV linac.  United States.

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                    Borland, M, Weaver, J N, Wiedemann, H, Green, M C, Nelson, L V, Miller, R H, and Tanabe, E. Sat .  
        "Performance of the 2 MeV microwave gun for the SSRL 150 MeV linac".  United States.  https://www.osti.gov/servlets/purl/6183102.

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@article{osti_6183102,

  title        = {Performance of the 2 MeV microwave gun for the SSRL 150 MeV linac},

  author       = {Borland, M and Weaver, J N and Wiedemann, H and Green, M C and Nelson, L V and Miller, R H and Tanabe, E},

  abstractNote = {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.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1990},

  month        = {9}

}

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