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DOE OSTI · 1844084

Model validation for inferred hot-spot conditions in National Ignition Facility experiments

Zylstra, A. B.·Nora, R.·Patel, P.·Hurricane, O.
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Abstract

Progress toward ignition requires accurately diagnosing current conditions and assessing proximity metrics for implosion experiments on the National Ignition Facility. Hot-spot conditions are not directly measured, but rather inferred, often using simple 0- and 1D models [P. Patel et al., Phys. Plasmas 27, 050901 (2020)]. In this work, we present a detailed accuracy validation exercise using a set of ~20,000 2D simulations encompassing a variety of performance and degradation levels. We find good agreement between the model-inferred pressure and the simulated burn-weighted pressure at peak neutron production and also present results on the precision of inferred quantities using a Markov-Chain Monte Carlo algorithm.

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70 PLASMA PHYSICS AND FUSION TECHNOLOGYMonte Carlo methodshydrodynamics simulationsnuclear fusionstatistical analysis

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Zylstra, A. B., Nora, R., Patel, P., Hurricane, O.. 2021-12-01. Model validation for inferred hot-spot conditions in National Ignition Facility experiments. https://doi.org/10.1063/5.0069366

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