Laser-driven magnetized liner inertial fusion

J. R. Davies, D. H. Barnak, R. Betti, E. M. Campbell, Po-Yu Chang, A. B. Sefkow, K. J. Peterson, D. B. Sinars, M. R. Weis

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A laser-driven, magnetized liner inertial fusion (MagLIF) experiment is designed for the OMEGA Laser System by scaling down the Z point design to provide the first experimental data on MagLIF scaling. OMEGA delivers roughly 1000× less energy than Z, so target linear dimensions are reduced by factors of ∼10. Magneto-inertial fusion electrical discharge system could provide an axial magnetic field of 10 T. Two-dimensional hydrocode modeling indicates that a single OMEGA beam can preheat the fuel to a mean temperature of ∼200 eV, limited by mix caused by heat flow into the wall. One-dimensional magnetohydrodynamic (MHD) modeling is used to determine the pulse duration and fuel density that optimize neutron yield at a fuel convergence ratio of roughly 25 or less, matching the Z point design, for a range of shell thicknesses. A relatively thinner shell, giving a higher implosion velocity, is required to give adequate fuel heating on OMEGA compared to Z because of the increase in thermal losses in smaller targets. Two-dimensional MHD modeling of the point design gives roughly a 50% reduction in compressed density, temperature, and magnetic field from 1-D because of end losses. Scaling up the OMEGA point design to the MJ laser energy available on the National Ignition Facility gives a 500-fold increase in neutron yield in 1-D modeling.

Original languageEnglish
Article number062701
JournalPhysics of Plasmas
Volume24
Issue number6
DOIs
Publication statusPublished - 2017 Jun 1

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linings
scaling
magnetohydrodynamics
lasers
neutrons
implosions
magnetic fields
heat transmission
ignition
pulse duration
temperature distribution
heating
energy
temperature

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Davies, J. R., Barnak, D. H., Betti, R., Campbell, E. M., Chang, P-Y., Sefkow, A. B., ... Weis, M. R. (2017). Laser-driven magnetized liner inertial fusion. Physics of Plasmas, 24(6), [062701]. https://doi.org/10.1063/1.4984779
Davies, J. R. ; Barnak, D. H. ; Betti, R. ; Campbell, E. M. ; Chang, Po-Yu ; Sefkow, A. B. ; Peterson, K. J. ; Sinars, D. B. ; Weis, M. R. / Laser-driven magnetized liner inertial fusion. In: Physics of Plasmas. 2017 ; Vol. 24, No. 6.
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Davies, JR, Barnak, DH, Betti, R, Campbell, EM, Chang, P-Y, Sefkow, AB, Peterson, KJ, Sinars, DB & Weis, MR 2017, 'Laser-driven magnetized liner inertial fusion', Physics of Plasmas, vol. 24, no. 6, 062701. https://doi.org/10.1063/1.4984779

Laser-driven magnetized liner inertial fusion. / Davies, J. R.; Barnak, D. H.; Betti, R.; Campbell, E. M.; Chang, Po-Yu; Sefkow, A. B.; Peterson, K. J.; Sinars, D. B.; Weis, M. R.

In: Physics of Plasmas, Vol. 24, No. 6, 062701, 01.06.2017.

Research output: Contribution to journalArticle

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Davies JR, Barnak DH, Betti R, Campbell EM, Chang P-Y, Sefkow AB et al. Laser-driven magnetized liner inertial fusion. Physics of Plasmas. 2017 Jun 1;24(6). 062701. https://doi.org/10.1063/1.4984779