Laser-driven magnetized liner inertial fusion

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

doi:10.1063/1.4984779

Laser-driven magnetized liner inertial fusion

Journal Article · Mon Jun 05 00:00:00 EDT 2017 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4984779· OSTI ID:1361694

Davies, J. R. ^[1]; Barnak, D. H. ^[2]; Betti, R. ^[2]; Campbell, E. M. ^[2]; Chang, P. -Y. ^[2]; Sefkow, A. B. ^[2]; Peterson, K. J. ^[3]; Sinars, D. B. ^[3]; Weis, M. R. ^[3]

Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Laboratory for Laser Energetics, University of Rochester
Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

A laser-driven, magnetized liner inertial fusion (MagLIF) experiment is designed in this paper 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. Finally, 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.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Rochester, NY (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); USDOE Advanced Research Projects Agency - Energy (ARPA-E); Univ. of Rochester (United States); New York State Research and Development Authority (United States)

Contributing Organization:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); National Cheng Kung Univ., Tainan City (Taiwan)

Grant/Contract Number:: NA0001944; AR0000568

OSTI ID:: 1361694

Alternate ID(s):: OSTI ID: 1986386

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 6 Vol. 24; ISSN 1070-664X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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