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Title: Zonal flow generation in inertial confinement fusion implosions

A supervised machine learning algorithm trained on a multi-petabyte dataset of inertial confinement fusion simulations has identified a class of implosions that robustly achieve high yield, even in the presence of drive variations and hydrodynamic perturbations. These implosions are purposefully driven with a time-varying asymmetry, such that coherent flow generation during hotspot stagnation forces the capsule to self-organize into an ovoid, a shape that appears to be more resilient to shell perturbations than spherical designs. Here this new class of implosions, whose configurations are reminiscent of zonal flows in magnetic fusion devices, may offer a path to robust inertial fusion.
Authors:
 [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Texas A & M Univ., College Station, TX (United States)
Publication Date:
Report Number(s):
LLNL-JRNL-699377
Journal ID: ISSN 1070-664X; TRN: US1700645
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 24; Journal Issue: 3; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION
OSTI Identifier:
1347661

Peterson, J. L., Humbird, K. D., Field, J. E., Brandon, S. T., Langer, S. H., Nora, R. C., Spears, B. K., and Springer, P. T.. Zonal flow generation in inertial confinement fusion implosions. United States: N. p., Web. doi:10.1063/1.4977912.
Peterson, J. L., Humbird, K. D., Field, J. E., Brandon, S. T., Langer, S. H., Nora, R. C., Spears, B. K., & Springer, P. T.. Zonal flow generation in inertial confinement fusion implosions. United States. doi:10.1063/1.4977912.
Peterson, J. L., Humbird, K. D., Field, J. E., Brandon, S. T., Langer, S. H., Nora, R. C., Spears, B. K., and Springer, P. T.. 2017. "Zonal flow generation in inertial confinement fusion implosions". United States. doi:10.1063/1.4977912. https://www.osti.gov/servlets/purl/1347661.
@article{osti_1347661,
title = {Zonal flow generation in inertial confinement fusion implosions},
author = {Peterson, J. L. and Humbird, K. D. and Field, J. E. and Brandon, S. T. and Langer, S. H. and Nora, R. C. and Spears, B. K. and Springer, P. T.},
abstractNote = {A supervised machine learning algorithm trained on a multi-petabyte dataset of inertial confinement fusion simulations has identified a class of implosions that robustly achieve high yield, even in the presence of drive variations and hydrodynamic perturbations. These implosions are purposefully driven with a time-varying asymmetry, such that coherent flow generation during hotspot stagnation forces the capsule to self-organize into an ovoid, a shape that appears to be more resilient to shell perturbations than spherical designs. Here this new class of implosions, whose configurations are reminiscent of zonal flows in magnetic fusion devices, may offer a path to robust inertial fusion.},
doi = {10.1063/1.4977912},
journal = {Physics of Plasmas},
number = 3,
volume = 24,
place = {United States},
year = {2017},
month = {3}
}

Works referenced in this record:

Polar direct drive on the National Ignition Facility
journal, May 2004
  • Skupsky, S.; Marozas, J. A.; Craxton, R. S.
  • Physics of Plasmas, Vol. 11, Issue 5, p. 2763-2770
  • DOI: 10.1063/1.1689665

Direct-drive laser fusion: Status and prospects
journal, May 1998
  • Bodner, Stephen E.; Colombant, Denis G.; Gardner, John H.
  • Physics of Plasmas, Vol. 5, Issue 5, p. 1901-1918
  • DOI: 10.1063/1.872861