Evaluating the Effects of Imperfections in Laser Illumination and Target Geometry on Direct-Drive Cryogenic DT Implosions on OMEGA

ORAL

Abstract

Laser-direct-drive experiments with layered cryogenic DT targets on OMEGA are used to evaluate the impact of imperfections in laser illumination and target geometry on the implosion performance. Some effects do not disturb the observable spherical symmetry of the implosion, like shock timing, preheat, and imprint, while others, like laser irradiation and ice layer nonuniformities, will show signatures in spatially resolved observables. A comprehensive set of diagnostics including neutron detectors, x-ray self-emission, and x-ray backlighting techniques is used to distinguish between different causes for the observed performance degradation. This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0003856.

–

Authors

  • C. Stoeckl

    • University of Rochester
    • University of Rochester - LLE
    • Laboratory for Laser Energetics, University of Rochester
    • Laboratory for Laser Energetics
    • Laboratory for Laser Energetics, U. of Rochester
    • University of Rochester, NY 14623, USA

  • Tim Collins

    • LLE
    • University of Rochester
    • University of Rochester - LLE
    • Laboratory for Laser Energetics, University of Rochester
    • Laboratory for Laser Energetics

  • R. Epstein

    • University of Rochester

  • C.J. Forrest

    • University of Rochester - LLE
    • Laboratory for Laser Energetics
    • Laboratory for Laser Energetics, University of Rochester
    • LLE
    • University of Rochester

  • V.Yu. Glebov

    • University of Rochester - LLE
    • Laboratory for Laser Energetics, University of Rochester
    • Laboratory for Laser Energetics
    • University of Rochester

  • V. N. Goncharov

    • Laboratory for Laser Energetics
    • University of Rochester, Laboratory for Laser Energetics
    • University of Rochester - LLE
    • Laboratory for Laser Energetics, University of Rochester
    • Laboratory for Laser Energetics, U. of Rochester
    • University of Rochester
    • Laboratory for laser Energetics, University of Rochester

  • Robert Jungquist

    • University of Rochester

  • C. Mileham

    • University of Rochester
    • University of Rochester, NY 14623, USA

  • P. B. Radha

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

  • Sean Regan

    • LLE
    • University of Rochester, Laboratory for Laser Energetics
    • University of Rochester - LLE
    • University of Rochester
    • Laboratory for Laser Energetics, U. of Rochester
    • Laboratory for Laser Energetics, University of Rochester
    • Laboratory for Laser Energetics

  • Craig Sangster

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

  • R. C. Shah

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

  • Wolfgang Theobald

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