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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