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Electron Radiography Based on Electron Beams from Self-Modulated Laser Wakefield Acceleration

ORAL

Abstract

We report on first experiments demonstrating electron radiography using the electron beam produced by self-modulated laser wakefield acceleration (SMLWFA) driven by the OMEGA EP laser. SMLWFA driven by picosecond-scale, kilojoule-class lasers enables electron beams that could be coupled to experiments driven by large-scale, high-energy drivers. The SMLWFA platform on OMEGA EP has demonstrated electron beams with electron energies exceeding 200 MeV, divergences as low as 32 mrad, charge exceeding 700 nC, and laser-to-electron conversion efficiencies up to 11%. These electron beams have been used to probe mid- to high-Z radiography test objects. Different styles of electron beams were produced to determine which are most conducive to electron radiography measurements. Preliminary findings suggest resolutions of 75 to 125 mm, depending on material depth.

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Presenters

  • Jessica Shaw

    University of Rochester

Authors

  • Jessica Shaw

    University of Rochester

  • Gerrit Bruhaug

    University of Rochester, Laboratory for Laser Energetics, U. of Rochester

  • Matthew Freeman

    Los Alamos National Laboratory

  • Frank Merrill

    Los Alamos National Laboratory, Los Alamos Natl Lab

  • Verena Geppert-Kleinrath

    Los Alamos National Laboratory

  • Carl H Wilde

    Los Alamos National Laboratory

  • Hans Rinderknecht

    University of Rochester Laboratory for Laser Energetics, Laboratory for Laser Energetics, U. of Rochester, Laboratory for Laser Energetics - Rochester, Lab for Laser Energetics, Laboratory for Laser Energetics, Laboratory for Laser Energetics, University of Rochester, University of Rochester

  • Dustin H Froula

    University of Rochester, Laboratory for Laser Energetics, U. of Rochester, Lab for Laser Energetics, Laboratory for Laser Energetics, Laboratory for Laser Energetics, University of Rochester