Shock-Ignition Target Designs for OMEGA

ORAL

Abstract

Shock-ignition designs of cryogenic targets on OMEGA are presented. The targets are designed to be an 83-\textit{$\mu $}m DT shell with a 10-\textit{$\mu $}m plastic ablator and outer radius of 430 \textit{$\mu $}m being driven by 25 kJ of laser energy in a triple-picket design. Using the triple-picket laser design makes it possible for the OMEGA Laser System to maximize the energy on target while shaping the adiabat to reduce the growth of Rayleigh--Taylor instabilities. One-dimensional simulations using the hydrodynamic code \textit{LILAC} indicate the cryogenic target achieves neutron yields of 4.6 $\times $ 10$^{13}$ and areal densities of 450~mg/cm$^{3}$. Two-dimensional \textit{DRACO} simulations, including ice roughness and multimode laser-imprint perturbations, will also be presented. This work was supported by the U.S. Department of Energy Office of Inertial Confinement Fusion under Cooperative Agreement Nos. DE-FC52-08NA28302 and DE-FC02-04ER54789.

Authors

  • R. Nora

  • R. Betti

  • K.S. Anderson

  • W. Theobald

    • Laboratory for Laser Energetics, U. of Rochester
  • G. Schurtz

  • M. Lafon

  • X. Ribeyre

    • CELIA
  • A. Casner

    • CEA