Commissioning of a high-brightness photoinjector for Compton scattering x-ray sources

POSTER

Abstract

Compton scattering of intense laser pulses with ultra-relativistic electron beams has proven to be an attractive source of high-brightness x-rays with keV to MeV energies. This type of x-ray source requires the electron beam brightness to be comparable with that used in x-ray free-electron lasers and laser and plasma based advanced accelerators. We describe the development and commissioning of a 1.6 cell RF photoinjector for use in Compton scattering experiments at LLNL. Injector development issues such as RF cavity design, beam dynamics simulations, emittance diagnostic development, results of sputtered magnesium photo-cathode experiments, and UV laser pulse shaping are discussed. Initial operation of the photoinjector is described and transverse phase space measurements are presented.

*This work was performed under the auspices of the U.S. Department of Energy by University of California Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48.

Authors

  • Scott Anderson

    • Lawrence Livermore National Laboratory

  • David Gibson

    • Lawrence Livermore National Laboratory

  • Mike Messerly

    • Lawrence Livermore National Laboratory

  • Miroslav Shverdin

    • Lawrence Livermore National Laboratory

  • Aaron Tremaine

    • Lawrence Livermore National Laboratory

  • Fred Hartemann

    • Lawrence Livermore National Laboratory

  • Craig Siders

    • Lawrence Livermore National Laboratory

  • Christopher Barty

    • Lawrence Livermore National Laboratory

  • Hristo Badakov

    • UCLA Dept. of Physics and Astronomy

  • Pedro Frigola

    • UCLA Dept. of Physics and Astronomy

  • Brendan O'Shea

    • UCLA Dept. of Physics and Astronomy

  • James Rosenzweig

    • UCLA Dept. of Physics and Astronomy