Capsule modeling of high foot implosion experiments on the National Ignition Facility

Clark, D. S.; Kritcher, A. L.; Milovich, J. L.; Salmonson, J. D.; Weber, C. R.; Haan, S. W.; Hammel, B. A.; Hinkel, D. E.; Marinak, M. M.; Patel, M. V.; Sepke, S. M.

doi:10.1088/1361-6587/aa6216

Title: Capsule modeling of high foot implosion experiments on the National Ignition Facility

Journal Article · Tue Mar 21 00:00:00 EDT 2017 · Plasma Physics and Controlled Fusion

DOI:https://doi.org/10.1088/1361-6587/aa6216· OSTI ID:1437706

Clark, D. S.; Kritcher, A. L.; Milovich, J. L.; Salmonson, J. D.; Weber, C. R.; Haan, S. W.; Hammel, B. A.; Hinkel, D. E.; Marinak, M. M.; Patel, M. V.; Sepke, S. M.

This study summarizes the results of detailed, capsule-only simulations of a set of high foot implosion experiments conducted on the National Ignition Facility (NIF). These experiments span a range of ablator thicknesses, laser powers, and laser energies, and modeling these experiments as a set is important to assess whether the simulation model can reproduce the trends seen experimentally as the implosion parameters were varied. Two-dimensional (2D) simulations have been run including a number of effects—both nominal and off-nominal—such as hohlraum radiation asymmetries, surface roughness, the capsule support tent, and hot electron pre-heat. Selected three-dimensional simulations have also been run to assess the validity of the 2D axisymmetric approximation. As a composite, these simulations represent the current state of understanding of NIF high foot implosion performance using the best and most detailed computational model available. While the most detailed simulations show approximate agreement with the experimental data, it is evident that the model remains incomplete and further refinements are needed. Nevertheless, avenues for improved performance are clearly indicated.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1437706

Alternate ID(s):: OSTI ID: 1438752

Report Number(s):: LLNL-JRNL-705905

Journal Information:: Plasma Physics and Controlled Fusion, Journal Name: Plasma Physics and Controlled Fusion Vol. 59 Journal Issue: 5; ISSN 0741-3335

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United Kingdom

Language:: English

Citation Metrics:

Cited by: 39 works

Citation information provided by
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