MCNP Forward Modeling for Density Reconstruction of Double Shell NIF-ARC Radiography

ORAL

Abstract

In the Double Shell Inertial Confinement Fusion concept, evaluating the shape asymmetry of imploding metal shells is vital for understanding energy-efficient compression and radiative losses of the thermonuclear fuel. The Monte Carlo N-Particle MCNP® code forward models radiography of Double Shell capsule implosions made using the Advanced Radiographic Capability at the National Ignition Facility. A procedure is developed using MCNP to reconstruct density profiles from the radiograph image intensity, which can help constrain our simulations (e.g. xRage). The synthetic radiographs can guide experimental design choices for optimizing radiograph contrast, signal-to-noise, and predictions for what times near stagnation may be radiographed for various inner shells (Cr, W, W-Be gradient).

*This work was supported by the U.S. Department of Energy (DOE) contract number 89233218CNA000001 for Los Alamos National Laboratory, owned by Triad National Security, LLC, for the U.S. DOE's NNSA. MCNP® and Monte Carlo N-Particle® are registered trademarks owned by Triad National Security, LLC. LA-UR-22-25599

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Presenters

  • Tom Byvank

    • Los Alamos National Laboratory

Authors

  • Tom Byvank

    • Los Alamos National Laboratory

  • David D Meyerhofer

    • Los Alamos National Laboratory

  • Paul A Keiter

    • Los Alamos National Laboratory

  • Irina Sagert

    • Los Alamos National Laboratory

  • David A Martinez

    • Lawrence Livermore Natl Lab

  • David S Montgomery

    • Los Alamos National Lab
    • Los Alamos Natl Lab
    • Los Alamos National Laboratory

  • Eric N Loomis

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory