Impact of Laser-Imprint on Direct-Drive Cryogenic Target Compression at OMEGA Using Statistics-Based Analysis with 2-D DRACO Simulations

ORAL

Abstract

We present ensemble comparisons between the measured and predicted areal density and yield from a database of high-resolution imprint simulations covering a wide space of implosions experiments. The 2-D simulation database includes imprint modes up to 150 and various levels of other perturbations (e.g. beam-port geometry, laser power imbalance, ice roughness, etc.), allowing us to quantify the impact of each on the predicted performance as well as obtain trends with respect to design parameters of interest. Simulations generally show a weak impact from imprint on implosions expected to have moderate stability (inflight adiabat>4, inflight-aspect-ratio<35) and, when compared to experiment, suggest the presence of an additional, significant degradation source(s). In addition to areal density and yield, laser imprint’s impact on other observables is also explored.

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Presenters

  • Duc M Cao

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

Authors

  • Duc M Cao

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

  • Rahul C Shah

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

  • Cliff A Thomas

    Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energetics, University of Rochester Laboratory for Laser Energetics (LLE)

  • Varchas Gopalaswamy

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

  • Aarne Lees

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

  • Riccardo Betti

    Laboratory for Laser Energetics, University of Rochester, Laboratory for Laser Energy, Rochester, NY, USA.

  • James P Knauer

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

  • Luke A Ceurvorst

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

  • Christian Stoeckl

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

  • Sean P Regan

    Laboratory for Laser Energetics, University of Rochester

  • P. B Radha

    Los Alamos National Laboratory, University of Rochester

  • Timothy J Collins

    Laboratory for Laser Energetics, University of Rochester

  • Valeri N Goncharov

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