Designing Parameter Scans to Better Understand, Optimize, and Extrapolate Capabilities in Laser Direct Drive

ORAL

Abstract

Statistical modeling of laser-direct-drive (LDD) cryogenic implosions at OMEGA has led to fusion yields higher by a factor of 3 to 5. The potential of the technique depends on the range and repeatability of prior data and the accuracy of measurements. It might also depend on the structure of data, and its ability to inform and improve aspects of integrated simulations. Here, we present results of implosion experiments that are newly designed to simplify interpretation(s) of laser-target coupling and hydrodynamic stability. In the first set, we vary the beam-to-target radius (R = Rb/Rt) from 0.67 to 1.07; in the second, we vary the in-flight aspect ratio (IFAR) from 30 to 50. When observations are compared to the statistical model and calculations in 1-D and 2-D, they clearly demonstrate the importance of target flaws and imperfections. Combined with previous experiments on hydrodynamic scale, these data are then used to suggest new directions in parameter space with the goal of achieving multi-MJ fusion yields with a driver < ~ 1 MJ. This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0003856.



[1] V. Gopalaswamy et al., Nature 565, 581 (2019)


[2] A. Lees et al., Phys. Rev. Lett. 127, 105001 (2021)

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Presenters

  • Cliff A Thomas

    • University of Rochester

Authors

  • Cliff A Thomas

    • University of Rochester

  • Wolfgang R Theobald

    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester
    • Laboratory for Laser Energetics, U. of Rochester

  • James P Knauer

    • University of Rochester
    • Laboratory for Laser Energetics, U. of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Christian Stoeckl

    • University of Rochester
    • Laboratory for Laser Energetics, U. of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Michael J Rosenberg

    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester
    • Laboratory for Laser Energetics, U. of Rochester

  • Timothy J Collins

    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Valeri N Goncharov

    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Riccardo Betti

    • University of Rochester
    • University of Rochester, Laboratory for Laser Energetics
    • Laboratory for Laser Energetics, U. of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Edward M Campbell

    • University of Rochester

  • Christopher Deeney

    • University of Rochester

  • Kenneth Anderson

    • Lab for Laser Energetics
    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Joshua Baltazar

    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • K. A Bauer

    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Duc Cao

    • Laboratory for Laser Energetics, U. of Rochester
    • U. Rochester/LLE
    • Laboratory for Laser Energetics, University of Rochester
    • University of Rochester

  • Stephen Craxton

    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Dana H Edgell

    • LLE
    • Laboratory for Laser Energetics
    • University of Rochester

  • Reuben Epstein

    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Chad J Forrest

    • Lab for Laser Energetics
    • University of Rochester

  • Vladimir Y Glebov

    • Lab for Laser Energetics
    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Varchas Gopalaswamy

    • Laboratory for Laser Energetics - Rochester
    • Laboratory for Laser Energetics, U. of Rochester
    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Igor V Igumenshchev

    • Lab for Laser Energetics
    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Steven T Ivancic

    • Lab for Laser Energetics
    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Douglas W Jacobs-Perkins

    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Roger T Janezic

    • Laboratory for Laser Energetics
    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Tirtha R Joshi

    • University of Rochester

  • Joe Kwiatkowski

    • U of Rochester
    • University of Rochester

  • Aarne Lees

    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Frederic J Marshall

    • University of Rochester

  • Michael Michalko

    • University of Rochester

  • Zaarah L Mohamed

    • Los Alamos National Laboratory
    • University of Rochester

  • Dhrumir P Patel

    • University of Rochester

  • Jonathan L Peebles

    • Laboratory for Laser Energetics
    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Radha Bahukutumbi

    • University of Rochester

  • Sean P Regan

    • Laboratory for Laser Energetics, University of Rochester
    • University of Rochester
    • Laboratory for Laser Energetics, U. of Rochester

  • Hans Rinderknecht

    • Laboratory for Laser Energetics
    • Laboratory for Laser Energetics - Rochester
    • Laboratory for Laser Energetics, U. of Rochester
    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Siddharth Sampat

    • Laboratory for Laser Energetics
    • LLE
    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Thomas C Sangster

    • University of Rochester
    • Laboratory for Laser Energetics
    • Laboratory for Laser Energetics, University of Rochester

  • Rahul C Shah

    • Laboratory for Laser Energetics - Rochester
    • Laboratory for Laser Energetics, U. of Rochester
    • University of Rochester
    • Laboratory for Laser Energetics, University of Rochester

  • Ka Ming M Woo

    • Lab for Laser Energetics
    • University of Rochester
    • Laboratory for Laser Energetics, U. of Rochester
    • Laboratory for Laser Energetics, University of Rochester