Auto-magnetizing liners for magnetized inertial fusion

Slutz, S. A.; Jennings, C. A.; Awe, T. J.; Shipley, G. A.; Hutsel, B. T.; Lamppa, D. C.

doi:10.1063/1.4973551

Auto-magnetizing liners for magnetized inertial fusion

Journal Article · Thu Jan 19 23:00:00 EST 2017 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4973551· OSTI ID:1340518

Slutz, S. A. ^[1]; Jennings, C. A. ^[1]; Awe, T. J. ^[1]; Shipley, G. A. ^[1]; ^[1]; Lamppa, D. C. ^[1]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Here, the MagLIF (Magnetized Liner Inertial Fusion) concept has demonstrated fusion-relevant plasma conditions on the Z accelerator using external field coils to magnetize the fuel before compression. We present a novel concept (AutoMag), which uses a composite liner with helical conduction paths separated by insulating material to provide fuel magnetization from the early part of the drive current, which by design rises slowly enough to avoid electrical breakdown of the insulators. Once the magnetization field is established, the drive current rises more quickly, which causes the insulators to break down allowing the drive current to follow an axial path and implode the liner in the conventional z-pinch manner. There are two important advantages to AutoMag over external field coils for the operation of MagLIF. Low inductance magnetically insulated power feeds can be used to increase the drive current, and AutoMag does not interfere with diagnostic access. Also, AutoMag enables a pathway to energy applications for MagLIF, since expensive field coils will not be damaged each shot. Finally, it should be possible to generate Field Reversed Configurations (FRC) by using both external field coils and AutoMag in opposite polarities. This would provide a means to studying FRC liner implosions on the 100 ns time scale.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1340518

Report Number(s):: SAND--2016-9904J; 647974

Journal Information:: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 1 Vol. 24; ISSN 1070-664X

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

Country of Publication:: United States

Language:: English

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Axial magnetic field injection in magnetized liner inertial fusion Gourdain, P. -A.; Adams, M. B.; Davies, J. R. Physics of Plasmas, Vol. 24, Issue 10 https://doi.org/10.1063/1.4986640	journal	October 2017
Megagauss-level magnetic field production in cm-scale auto-magnetizing helical liners pulsed to 500 kA in 125 ns Shipley, G. A.; Awe, T. J.; Hutsel, B. T. Physics of Plasmas, Vol. 25, Issue 5 https://doi.org/10.1063/1.5028142	journal	May 2018
The generation of mega-gauss fields on the Cornell beam research accelerator Gourdain, P. -A.; Brent, G.; Greenly, J. B. Review of Scientific Instruments, Vol. 89, Issue 9 https://doi.org/10.1063/1.5041946	journal	September 2018
Enhancing performance of magnetized liner inertial fusion at the Z facility Slutz, S. A.; Gomez, M. R.; Hansen, S. B. Physics of Plasmas, Vol. 25, Issue 11 https://doi.org/10.1063/1.5054317	journal	November 2018
Implosion of auto-magnetizing helical liners on the Z facility Shipley, G. A.; Awe, T. J.; Hutsel, B. T. Physics of Plasmas, Vol. 26, Issue 5 https://doi.org/10.1063/1.5089468	journal	May 2019
Design of dynamic screw pinch experiments for magnetized liner inertial fusion Shipley, G. A.; Jennings, C. A.; Schmit, P. F. Physics of Plasmas, Vol. 26, Issue 10 https://doi.org/10.1063/1.5120529	journal	October 2019

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