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Design and modeling of a unity-gain platform at 1.9 MJ of laser drive on the National Ignition Facility through optimized shock timing

ORAL

Abstract

The Hybrid-E Shock Merge campaign is assessing the impact of increased compression on performance relative to the N210808 high-yield experiment. Simulations suggest that modifications to the shock timing of N210808 could increase the performance via reduced adiabat; this is achieved by merging the first and second shocks closer to the ice/gas interface, and lengthening the time during which the laser rises to peak power to reduce the entropy generated by the reflected shock.



In this talk we will discuss the design of the Shock Merge experiments and the expected improvements relative to N210808. We will discuss the challenges and lessons learned from the initial experiments, and how that information led to subtle design changes for the NIF experiment N230605, the first experiment to achieve target gain of unity within the experimental uncertainties at 1.9MJ of laser drive energy. Finally, we will consider how similar shock timing modifications could impact performance in the 2.05MJ Hybrid-E platform.



Prepared by LLNL under Contract DE-AC52-07NA27344. LLNL-ABS-851373.

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Presenters

  • Kelli D Humbird

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

Authors

  • Kelli D Humbird

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Daniel S Clark

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Matthias Hohenberger

    Lawrence Livermore Natl Lab

  • Arthur E Pak

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Christopher V Young

    Lawrence Livermore National Laboratory

  • Andrea Kritcher

    Lawrence Livermore National Laboratory

  • Tilo Doeppner

    Lawrence Livermore National Laboratory

  • Daniel T Casey

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Benjamin Bachmann

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Juergen Biener

    General Atomics, Lawrence Livermore Natl Lab

  • Richard M Bionta

    Lawrence Livermore Natl Lab

  • Tom Braun

    LLNL, Lawrence Livermore Natl Lab

  • Travis Briggs

    Lawrence Livermore Natl Lab, LLNL

  • Thomas Chapman

    Lawrence Livermore Natl Lab, LLNL, Lawrence Livermore National Laboratory

  • Thomas R Dittrich

    Lawrence Livermore Natl Lab

  • Laurent Divol

    Lawrence Livermore Natl Lab, LLNL, Lawrence Livermore National Laboratory

  • Alexandre Do

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory, LLNL

  • Steven W Haan

    Lawrence Livermore Natl Lab

  • Shahab Khan

    Lawrence Livermore National Lab, Lawrence Livermore National Laboratory, Lawrence Livermore Natl Lab, LLNL

  • Casey Kong

    General Atomics

  • Bernard Kozioziemski

    Lawrence Livermore Natl Lab

  • Brian J MacGowan

    Lawrence Livermore Natl Lab

  • Steve A MacLaren

    LLNL

  • Alastair S Moore

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Abbas Nikroo

    Lawrence Livermore National Lab, Lawrence Livermore Natl Lab, LLNL

  • Ryan C Nora

    Lawrence Livermore National Laboratory

  • Joseph E Ralph

    Lawrence Livermore Natl Lab

  • David Schlossberg

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Stanislav Stoupin

    Lawrence Livermore National Laboratory

  • Clement A Trosseille

    Lawrence Livermore Natl Lab

  • Chris R Weber

    Lawrence Livermore Natl Lab

  • Christopher Wild

    Diamond Materials

  • Brandon Woodworth

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory, LLNL

  • Alex Zylstra

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Omar Hurricane

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory

  • Michael Stadermann

    Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory, LLNL

  • Otto L Landen

    Lawrence Livermore National Laboratory, Lawrence Livermore Natl Lab, Lawrence Livermore National Lab