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Title: Axial magnetic field injection in magnetized liner inertial fusion

Abstract

MagLIF is a fusion concept using a Z-pinch implosion to reach thermonuclear fusion. In current experiments, the implosion is driven by the Z-machine using 19 MA of electrical current with a rise time of 100 ns. MagLIF requires an initial axial magnetic field of 30 T to reduce heat losses to the liner wall during compression and to confine alpha particles during fusion burn. This field is generated well before the current ramp starts and needs to penetrate the transmission lines of the pulsed-power generator, as well as the liner itself. Consequently, the axial field rise time must exceed hundreds of microseconds. Any coil capable of being submitted to such a field for that length of time is inevitably bulky. The space required to fit the coil near the liner, increases the inductance of the load. In turn, the total current delivered to the load decreases since the voltage is limited by driver design. Yet, the large amount of current provided by the Z-machine can be used to produce the required 30 T field by tilting the return current posts surrounding the liner, eliminating the need for a separate coil. However, the problem now is the field penetration time, acrossmore » the liner wall. This paper discusses why skin effect arguments do not hold in the presence of resistivity gradients. Numerical simulations show that fields larger than 30 T can diffuse across the liner wall in less than 60 ns, demonstrating that external coils can be replaced by return current posts with optimal helicity.« less

Authors:
 [1]; ORCiD logo [1];  [1]; ORCiD logo [2]
  1. Univ. of Rochester, Rochester, NY (United States)
  2. Cornell Univ., Ithaca, NY (United States)
Publication Date:
Research Org.:
Univ. of Rochester, Rochester, NY (United States)
Sponsoring Org.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
OSTI Identifier:
1515030
Alternate Identifier(s):
OSTI ID: 1406140
Grant/Contract Number:  
SC0016252; AR000056
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 24; Journal Issue: 10; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Gourdain, P. -A., Adams, M. B., Davies, J. R., and Seyler, C. E. Axial magnetic field injection in magnetized liner inertial fusion. United States: N. p., 2017. Web. doi:10.1063/1.4986640.
Gourdain, P. -A., Adams, M. B., Davies, J. R., & Seyler, C. E. Axial magnetic field injection in magnetized liner inertial fusion. United States. doi:10.1063/1.4986640.
Gourdain, P. -A., Adams, M. B., Davies, J. R., and Seyler, C. E. Tue . "Axial magnetic field injection in magnetized liner inertial fusion". United States. doi:10.1063/1.4986640. https://www.osti.gov/servlets/purl/1515030.
@article{osti_1515030,
title = {Axial magnetic field injection in magnetized liner inertial fusion},
author = {Gourdain, P. -A. and Adams, M. B. and Davies, J. R. and Seyler, C. E.},
abstractNote = {MagLIF is a fusion concept using a Z-pinch implosion to reach thermonuclear fusion. In current experiments, the implosion is driven by the Z-machine using 19 MA of electrical current with a rise time of 100 ns. MagLIF requires an initial axial magnetic field of 30 T to reduce heat losses to the liner wall during compression and to confine alpha particles during fusion burn. This field is generated well before the current ramp starts and needs to penetrate the transmission lines of the pulsed-power generator, as well as the liner itself. Consequently, the axial field rise time must exceed hundreds of microseconds. Any coil capable of being submitted to such a field for that length of time is inevitably bulky. The space required to fit the coil near the liner, increases the inductance of the load. In turn, the total current delivered to the load decreases since the voltage is limited by driver design. Yet, the large amount of current provided by the Z-machine can be used to produce the required 30 T field by tilting the return current posts surrounding the liner, eliminating the need for a separate coil. However, the problem now is the field penetration time, across the liner wall. This paper discusses why skin effect arguments do not hold in the presence of resistivity gradients. Numerical simulations show that fields larger than 30 T can diffuse across the liner wall in less than 60 ns, demonstrating that external coils can be replaced by return current posts with optimal helicity.},
doi = {10.1063/1.4986640},
journal = {Physics of Plasmas},
number = 10,
volume = 24,
place = {United States},
year = {2017},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

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Cited by: 1 work
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Figures / Tables:

FIG. 1 FIG. 1: Overall geometry used in the simulation showing the liner, the anode (A), the cathode (K), and the A-K gap. The lineout used in in other figures is also indicated. The liner radius is 3 mm.

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Works referenced in this record:

Resistivity of a Simple Metal from Room Temperature to 10 6 K
journal, November 1988


Auto-magnetizing liners for magnetized inertial fusion
journal, January 2017

  • Slutz, S. A.; Jennings, C. A.; Awe, T. J.
  • Physics of Plasmas, Vol. 24, Issue 1
  • DOI: 10.1063/1.4973551

Pulsed-power-driven cylindrical liner implosions of laser preheated fuel magnetized with an axial field
journal, May 2010

  • Slutz, S. A.; Herrmann, M. C.; Vesey, R. A.
  • Physics of Plasmas, Vol. 17, Issue 5
  • DOI: 10.1063/1.3333505

Controlling Rayleigh-Taylor Instabilities in Magnetically Driven Solid Metal Shells by Means of a Dynamic Screw Pinch
journal, November 2016


Practical Improvements to the Lee-More Conductivity Near the Metal-Insulator Transition
journal, March 2001


Relaxation model for extended magnetohydrodynamics: Comparison to magnetohydrodynamics for dense Z-pinches
journal, January 2011

  • Seyler, C. E.; Martin, M. R.
  • Physics of Plasmas, Vol. 18, Issue 1
  • DOI: 10.1063/1.3543799

The importance of electrothermal terms in Ohm's law for magnetized spherical implosions
journal, November 2015

  • Davies, J. R.; Betti, R.; Chang, P. -Y.
  • Physics of Plasmas, Vol. 22, Issue 11
  • DOI: 10.1063/1.4935286

Beryllium liner implosion experiments on the Z accelerator in preparation for magnetized liner inertial fusion
journal, May 2013

  • McBride, R. D.; Martin, M. R.; Lemke, R. W.
  • Physics of Plasmas, Vol. 20, Issue 5
  • DOI: 10.1063/1.4803079

Equation of state and transport properties of warm dense aluminum by ab initio and chemical model simulations
journal, January 2017

  • Fu, Zhijian; Quan, Weilong; Zhang, Wei
  • Physics of Plasmas, Vol. 24, Issue 1
  • DOI: 10.1063/1.4973834

Simulating the magnetized liner inertial fusion plasma confinement with smaller-scale experiments
journal, June 2012

  • Ryutov, D. D.; Cuneo, M. E.; Herrmann, M. C.
  • Physics of Plasmas, Vol. 19, Issue 6
  • DOI: 10.1063/1.4729726

Impact of the Hall Effect on High-Energy-Density Plasma Jets
journal, January 2013


Ab initio calculation of transport and optical properties of aluminum: Influence of simulation parameters
journal, November 2013


Some Criteria for a Power Producing Thermonuclear Reactor
journal, January 1957


    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.