Tearing stability in toroidal plasmas with shaped cross section

C. J. Ham; Y. Q. Liu; J. W. Connor; S. C. Cowley; R. J. Hastie; T. C. Hender; T. J. Martin

doi:10.1088/0741-3335/54/10/105014

Tearing stability in toroidal plasmas with shaped cross section

C. J. Ham, Y. Q. Liu, J. W. Connor, S. C. Cowley, R. J. Hastie, T. C. Hender, T. J. Martin

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Two methods for calculating tearing mode stability are described in this paper. A fast method using the recently improved T7 code (Ham et al 2012 Plasma Phys. Control. Fusion 54 025009) and a new method based on the MARS-F MHD stability code (Liu et al 2000 Phys. Plasmas 7 3681) which constructs the tearing mode solution from calculated basis functions in the full geometry of the problem. The effects of plasma toroidicity and cross-sectional shaping on tearing mode stability are investigated using both of the methods; the resultant stabilizing effects are in reasonable agreement over the range of parameters investigated. The parameter-space explored includes JET-like and ITER-like plasma shaping. While T7 can be used for rapid calculations and parameter scans, the MARS-F construction technique produces the more accurate value of the tearing mode stability index.

Original language	English (US)
Article number	105014
Journal	Plasma Physics and Controlled Fusion
Volume	54
Issue number	10
DOIs	https://doi.org/10.1088/0741-3335/54/10/105014
State	Published - Oct 2012
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering
Condensed Matter Physics

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10.1088/0741-3335/54/10/105014

Cite this

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title = "Tearing stability in toroidal plasmas with shaped cross section",

abstract = "Two methods for calculating tearing mode stability are described in this paper. A fast method using the recently improved T7 code (Ham et al 2012 Plasma Phys. Control. Fusion 54 025009) and a new method based on the MARS-F MHD stability code (Liu et al 2000 Phys. Plasmas 7 3681) which constructs the tearing mode solution from calculated basis functions in the full geometry of the problem. The effects of plasma toroidicity and cross-sectional shaping on tearing mode stability are investigated using both of the methods; the resultant stabilizing effects are in reasonable agreement over the range of parameters investigated. The parameter-space explored includes JET-like and ITER-like plasma shaping. While T7 can be used for rapid calculations and parameter scans, the MARS-F construction technique produces the more accurate value of the tearing mode stability index.",

author = "Ham, {C. J.} and Liu, {Y. Q.} and Connor, {J. W.} and Cowley, {S. C.} and Hastie, {R. J.} and Hender, {T. C.} and Martin, {T. J.}",

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T1 - Tearing stability in toroidal plasmas with shaped cross section

AU - Ham, C. J.

AU - Liu, Y. Q.

AU - Connor, J. W.

AU - Cowley, S. C.

AU - Hastie, R. J.

AU - Hender, T. C.

AU - Martin, T. J.

PY - 2012/10

Y1 - 2012/10

N2 - Two methods for calculating tearing mode stability are described in this paper. A fast method using the recently improved T7 code (Ham et al 2012 Plasma Phys. Control. Fusion 54 025009) and a new method based on the MARS-F MHD stability code (Liu et al 2000 Phys. Plasmas 7 3681) which constructs the tearing mode solution from calculated basis functions in the full geometry of the problem. The effects of plasma toroidicity and cross-sectional shaping on tearing mode stability are investigated using both of the methods; the resultant stabilizing effects are in reasonable agreement over the range of parameters investigated. The parameter-space explored includes JET-like and ITER-like plasma shaping. While T7 can be used for rapid calculations and parameter scans, the MARS-F construction technique produces the more accurate value of the tearing mode stability index.

AB - Two methods for calculating tearing mode stability are described in this paper. A fast method using the recently improved T7 code (Ham et al 2012 Plasma Phys. Control. Fusion 54 025009) and a new method based on the MARS-F MHD stability code (Liu et al 2000 Phys. Plasmas 7 3681) which constructs the tearing mode solution from calculated basis functions in the full geometry of the problem. The effects of plasma toroidicity and cross-sectional shaping on tearing mode stability are investigated using both of the methods; the resultant stabilizing effects are in reasonable agreement over the range of parameters investigated. The parameter-space explored includes JET-like and ITER-like plasma shaping. While T7 can be used for rapid calculations and parameter scans, the MARS-F construction technique produces the more accurate value of the tearing mode stability index.

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Tearing stability in toroidal plasmas with shaped cross section

Abstract

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