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Title: The staged z-pinch as a potential high gain fusion energy source: An independent review, a negative conclusion

Abstract

Previously published calculations predict that the “staged z-pinch” (SZP) can achieve 400 MJ of fusion yield on a Z-class machine. The SZP is touted to need no external preheat mechanism and no external pre-magnetization method. Instead, it is claimed that the imploding liner can adequately “shock preheat” the fuel and magnetic field diffusion through the liner can adequately magnetize the fuel. Here in this paper, we analyze a number of published SZP calculations and demonstrate that the calculations have major errors—the computer code used to do the calculations does not appear to be accurately solving the physical model it is intended to solve. A variety of independent analyses lead to this conclusion. This conclusion is confirmed by detailed one-dimensional magnetohydrodynamic (MHD) calculations conducted on different computer codes using a variety of proposed SZP operating parameters. Although using parameters similar or identical to the published calculations, our MHD calculations do not reach fusion conditions; there is no conceivable modification of the parameters that would lead to high-gain fusion conditions using these other codes. Our analyses and a review of the magnetized target parameter space leads to further conclusion that the SZP should not be considered to be a potential high-gain fusionmore » source.« less

Authors:
 [1]; ORCiD logo [2];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1483981
Alternate Identifier(s):
OSTI ID: 1478546
Report Number(s):
SAND-2018-12657J
Journal ID: ISSN 1070-664X; 670032
Grant/Contract Number:  
AC04-94AL85000; NA0003525
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 25; 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

Lindemuth, Irvin R., Weis, Matthew R., and Atchison, Walter L. The staged z-pinch as a potential high gain fusion energy source: An independent review, a negative conclusion. United States: N. p., 2018. Web. doi:10.1063/1.5045123.
Lindemuth, Irvin R., Weis, Matthew R., & Atchison, Walter L. The staged z-pinch as a potential high gain fusion energy source: An independent review, a negative conclusion. United States. https://doi.org/10.1063/1.5045123
Lindemuth, Irvin R., Weis, Matthew R., and Atchison, Walter L. Mon . "The staged z-pinch as a potential high gain fusion energy source: An independent review, a negative conclusion". United States. https://doi.org/10.1063/1.5045123. https://www.osti.gov/servlets/purl/1483981.
@article{osti_1483981,
title = {The staged z-pinch as a potential high gain fusion energy source: An independent review, a negative conclusion},
author = {Lindemuth, Irvin R. and Weis, Matthew R. and Atchison, Walter L.},
abstractNote = {Previously published calculations predict that the “staged z-pinch” (SZP) can achieve 400 MJ of fusion yield on a Z-class machine. The SZP is touted to need no external preheat mechanism and no external pre-magnetization method. Instead, it is claimed that the imploding liner can adequately “shock preheat” the fuel and magnetic field diffusion through the liner can adequately magnetize the fuel. Here in this paper, we analyze a number of published SZP calculations and demonstrate that the calculations have major errors—the computer code used to do the calculations does not appear to be accurately solving the physical model it is intended to solve. A variety of independent analyses lead to this conclusion. This conclusion is confirmed by detailed one-dimensional magnetohydrodynamic (MHD) calculations conducted on different computer codes using a variety of proposed SZP operating parameters. Although using parameters similar or identical to the published calculations, our MHD calculations do not reach fusion conditions; there is no conceivable modification of the parameters that would lead to high-gain fusion conditions using these other codes. Our analyses and a review of the magnetized target parameter space leads to further conclusion that the SZP should not be considered to be a potential high-gain fusion source.},
doi = {10.1063/1.5045123},
url = {https://www.osti.gov/biblio/1483981}, journal = {Physics of Plasmas},
issn = {1070-664X},
number = 10,
volume = 25,
place = {United States},
year = {2018},
month = {10}
}

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Works referenced in this record:

Design of magnetized liner inertial fusion experiments using the Z facility
journal, July 2014


The ignition design space of magnetized target fusion
journal, December 2015


Transport of Magnetic Flux in an Arbitrary Coordinate ALE Code
journal, February 1998


A boundary condition for computational magnetohydrodynamics
journal, October 1977


High yield fusion in a staged Z-pinch
journal, April 2009


Experimental Demonstration of Fusion-Relevant Conditions in Magnetized Liner Inertial Fusion
journal, October 2014


An extended study of the ignition design space of magnetized target fusion
journal, March 2017


The fundamental parameter space of controlled thermonuclear fusion
journal, May 2009


MHRDRing Z-Pinches and Related Geometries: Four Decades of Computational Modeling Using Still Unconventional Methods
conference, January 2009

  • Lindemuth, Irvin R.; Kusse, Bruce R.; Hammer, David A.
  • DENSE Z-PINCHES: Proceedings of the 7th International Conference on Dense Z-Pinches, AIP Conference Proceedings
  • https://doi.org/10.1063/1.3079707

Fusion in a Staged <inline-formula> <tex-math notation="LaTeX">$Z$ </tex-math></inline-formula>-Pinch
journal, August 2015


Design, fabrication, and operation of a high-energy liner implosion experiment at 16 megamperes
journal, October 2002


Fusion in a staged Z-pinch
conference, January 2016

  • Wessel, F. J.; Rahman, H. U.; Ney, P.
  • THE PHYSICS OF PLASMA-DRIVEN ACCELERATORS AND ACCELERATOR-DRIVEN FUSION: The Proceedings of Norman Rostoker Memorial Symposium, AIP Conference Proceedings
  • https://doi.org/10.1063/1.4944028

Conservation form in computational magnetohydrodynamics
journal, June 1975


Three-dimensional HYDRA simulations of National Ignition Facility targets
journal, May 2001


    Works referencing / citing this record:

    Retrospective of the ARPA-E ALPHA Fusion Program
    journal, October 2019