Polar-Direct-Drive Defect Implosions at OMEGA inPreparation for Experiments at NIF

ORAL

Abstract

The Defect-Implosion (DIME) campaign involves compressing perturbed spherical capsules with polar direct drive (PDD). For direct-drive implosions at NIF, PDD will be used. We have done simulations and experiments at OMEGA to test our modeling capability for equatorial-plane defects in fusion capsules and for PDD at NIF. Since PDD is anisotropic, we show the results of 0$^{th}$ hydrodynamics of implosions and perturbation-driven features near stagnation. Later presentations discuss defect-induced mix and neutronics, and laser pointing for NIF experiments. Prototype OMEGA shots used 865-$\mu $m diameter CH shells filled with 5 atm of D$_{2}$. Machined channels 30-$\mu $m wide and up to 9-$\mu $m deep formed the defects.

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Authors

  • J. Cobble

    Los Alamos National Lab, Los Alamos National Laboratory, LANL

  • M. Schmitt

    Los Alamos National Lab, Los Alamos National Laboratory, LANL

  • T.J. Murphy

    Los Alamos National Lab, Los Alamos National Laboratory, LANL

  • I.L. Tregillis

    Los Alamos National Lab, Los Alamos National Laboratory, LANL

  • F.J. Wysocki

    Los Alamos National Laboratory, Los Alamos National Lab, LANL

  • K.D. Obrey

    Los Alamos National Laboratory, Los Alamos National Lab, LANL

  • G.R. Magelssen

    Los Alamos National Lab, Los Alamos National Laboratory, LANL

  • V. Glebov

    LLE

  • P.A. Bradley

    Los Alamos National Lab, Los Alamos National Laboratory, LANL

  • S.C. Hsu

    Los Alamos National Lab, LANL, Los Alamos National Laboratory

  • N.S. Vinyard

    Los Alamos National Lab, Los Alamos National Laboratory, LANL

  • S. Batha

    LANL, Los Alamos National Laboratory