Subharmonic Buncher For The Los Alamos Free Electron Laser Oscillator Experiment

J. S. Fraser

doi:10.1117/12.947089

16 February 1984 Subharmonic Buncher For The Los Alamos Free Electron Laser Oscillator Experiment

J. S. Fraser

Proceedings Volume 0453, Free-Electron Generators of Coherent Radiation; (1984) https://doi.org/10.1117/12.947089
Event: Free-Electron Generators of Coherent Radiation, 1983, Orcas Island, United States

Abstract

A high-efficiency, free electron laser, oscillator experiment is being conducted at Los Alamos National Laboratory. A buncher system has been designed to deliver 30-ps, 5-nC electron bunches to a 20-MeV standing-wave linac at the 60th subharmonic of the 1300-MHz accelerator frequency. The first 108.3-MHz buncher cavity accepts a 5-ns, 5-A peak current pulse from a triode gun. Following a 120-cm drift space, a second 108.3-MHz cavity is used, primarily to enhance the bunching of the trailing half of the bunch. A 1300-MHz cavity with 20-cm drift spaces before and after the cavity completes the beamline compo-nents. The bunching process continues into the linac's first three accelerating cells. Two thin iron-shielded lenses and several large-diameter solenoids provide axial magnetic fields for radial focusing.

Citation Download Citation

J. S. Fraser "Subharmonic Buncher For The Los Alamos Free Electron Laser Oscillator Experiment", Proc. SPIE 0453, Free-Electron Generators of Coherent Radiation, (16 February 1984); https://doi.org/10.1117/12.947089

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