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.

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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