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Design of magnetized liner inertial fusion experiments using the Z facility.

Authors :
Sefkow, A. B.
Slutz, S. A.
Koning, J. M.
Marinak, M. M.
Peterson, K. J.
Sinars, D. B.
Vesey, R. A.
Source :
Physics of Plasmas; Jul2014, Vol. 21 Issue 7, p1-15, 15p, 2 Charts, 17 Graphs
Publication Year :
2014

Abstract

The magnetized liner inertial fusion concept has been presented as a path toward obtaining substantial thermonuclear fusion yields using the Z accelerator [S. A. Slutz et al., Phys. Plasmas 17, 056303 (2010)]. We present the first integrated magnetohydrodynamic simulations of the inertial fusion targets, which self-consistently include laser preheating of the fuel, the presence of electrodes, and end loss effects. These numerical simulations provided the design for the first thermonuclear fusion neutron-producing experiments on Z using capabilities that presently exist: peak currents of I<subscript>max</subscript>=18-20 MA, pre-seeded axial magnetic fields of B<subscript>z</subscript><superscript>0</superscript> = 10 T, laser preheat energies of about E<subscript>las</subscript>=2 kJ delivered in 2 ns, DD fuel, and an aspect ratio 6 solid Be liner imploded to 70 km/s. Specific design details and observables for both near-term and future experiments are discussed, including sensitivity to laser timing and absorbed preheat energy. The initial experiments measured stagnation radii r<subscript>stag</subscript> < 75 μm, temperatures around 3 keV, and isotropic neutron yields up to Y<subscript>n</subscript><superscript>DD</superscript> = 2 × 10<superscript>12</superscript>, with inferred alpha-particle magnetization parameters around r<subscript>stag</subscript>=r<subscript>L</subscript><superscript>α</superscript> = 1.7 [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
1070664X
Volume :
21
Issue :
7
Database :
Complementary Index
Journal :
Physics of Plasmas
Publication Type :
Academic Journal
Accession number :
97349399
Full Text :
https://doi.org/10.1063/1.4890298