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).
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Presenters
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Tom Byvank
Los Alamos National Laboratory
Authors
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Tom Byvank
Los Alamos National Laboratory
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David D Meyerhofer
Los Alamos National Laboratory
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Paul A Keiter
Los Alamos National Laboratory
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Irina Sagert
Los Alamos National Laboratory
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David A Martinez
Lawrence Livermore Natl Lab
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David S Montgomery
Los Alamos National Lab, Los Alamos Natl Lab, Los Alamos National Laboratory
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Eric N Loomis
Los Alamos Natl Lab, Los Alamos National Laboratory