Free-boundary MRxMHD equilibrium calculations using the stepped-pressure equilibrium code

Hudson, S. R.; Loizu, J.; Zhu, C.; Qu, Z. S.; Nührenberg, C.; Lazerson, S.; Smiet, C. B.; Hole, M. J.

doi:10.1088/1361-6587/ab9a61

Free-boundary MRxMHD equilibrium calculations using the stepped-pressure equilibrium code

Journal Article · Tue Jul 14 00:00:00 EDT 2020 · Plasma Physics and Controlled Fusion

DOI:https://doi.org/10.1088/1361-6587/ab9a61· OSTI ID:1661163

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Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Ecole Polytechnique Federale Lausanne (Switzlerland)
Australian National Univ., Canberra, ACT (Australia)
Max-Planck-Institut für Plasmaphysik (Germany)
Australian National Univ., Canberra, ACT (Australia); Australian Nuclear Science and Technology Organisation (ANSTO), Kirrawee DC, NSW (Australia)

Here the stepped-pressure equilibrium code (SPEC) (Hudson et al 2012 Phys. Plasmas 19, 112 502) is extended to enable free-boundary multi-region relaxed magnetohydrodynamic (MRxMHD) equilibrium calculations. The vacuum field surrounding the plasma inside an arbitrary 'computational boundary', , is computed, and the virtual-casing principle is used iteratively to compute the normal field on so that the equilibrium is consistent with an externally produced magnetic field. Recent modifications to SPEC are described, such as the use of Chebyshev polynomials to describe the radial dependence of the magnetic vector potential, and a variety of free-boundary verification calculations are presented.

View Accepted Manuscript (DOE)

Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Fusion Energy Sciences (FES); Euratom; Australian Research Council (ARC); Simons Foundation/SFARI

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 1661163

Alternate ID(s):: OSTI ID: 23028787

Journal Information:: Plasma Physics and Controlled Fusion, Journal Name: Plasma Physics and Controlled Fusion Journal Issue: 8 Vol. 62; ISSN 0741-3335

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

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70 PLASMA PHYSICS AND FUSION TECHNOLOGY
MHD
MRxMHD
SPEC
equlibria

Free-boundary MRxMHD equilibrium calculations using the stepped-pressure equilibrium code

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