Drift mode calculations in nonaxisymmetric geometry

G. Rewoldt; L. P. ku; W. M. Tang; W. A. Cooper

doi:10.1063/1.873757

Drift mode calculations in nonaxisymmetric geometry

G. Rewoldt, L. P. ku, W. M. Tang, W. A. Cooper

PPPL Computational Science

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

26 Scopus citations

Abstract

A fully kinetic assessment of the stability properties of toroidal drift modes has been obtained for nonaxisymmetric (stellarator) geometry, in the electrostatic limit. This calculation is a comprehensive solution of the linearized gyrokinetic equation, using the lowest-order “ballooning representation” for high toroidal mode number instabilities, with a model collision operator. Results for toroidal drift waves destabilized by temperature gradients and/or trapped particle dynamics are presented, using three-dimensional magnetohydrodynamic equilibria generated as part of a design effort for a quasiaxisymmetric stellarator. Comparisons of these results with those obtained for typical tokamak cases indicate that the basic trends are similar.

Original language	English (US)
Pages (from-to)	4705-4713
Number of pages	9
Journal	Physics of Plasmas
Volume	6
Issue number	12
DOIs	https://doi.org/10.1063/1.873757
State	Published - Dec 1999

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

Keywords

BALLOONING INSTABILITY
GEOMETRY
KINETICS
MHD EQUILIBRIUM
PLASMA CONFINEMENT
PLASMA DRIFT
PLASMA SIMULATION
PLASMA WAVES
STELLARATORS
TEMPERATURE DISTRIBUTION
TOROIDAL CONFIGURATION

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10.1063/1.873757

Cite this

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title = "Drift mode calculations in nonaxisymmetric geometry",

abstract = "A fully kinetic assessment of the stability properties of toroidal drift modes has been obtained for nonaxisymmetric (stellarator) geometry, in the electrostatic limit. This calculation is a comprehensive solution of the linearized gyrokinetic equation, using the lowest-order “ballooning representation” for high toroidal mode number instabilities, with a model collision operator. Results for toroidal drift waves destabilized by temperature gradients and/or trapped particle dynamics are presented, using three-dimensional magnetohydrodynamic equilibria generated as part of a design effort for a quasiaxisymmetric stellarator. Comparisons of these results with those obtained for typical tokamak cases indicate that the basic trends are similar.",

keywords = "BALLOONING INSTABILITY, GEOMETRY, KINETICS, MHD EQUILIBRIUM, PLASMA CONFINEMENT, PLASMA DRIFT, PLASMA SIMULATION, PLASMA WAVES, STELLARATORS, TEMPERATURE DISTRIBUTION, TOROIDAL CONFIGURATION",

author = "G. Rewoldt and ku, \{L. P.\} and Tang, \{W. M.\} and Cooper, \{W. A.\}",

year = "1999",

month = dec,

doi = "10.1063/1.873757",

language = "English (US)",

volume = "6",

pages = "4705--4713",

journal = "Physics of Plasmas",

issn = "1070-664X",

publisher = "American Institute of Physics",

number = "12",

}

TY - JOUR

T1 - Drift mode calculations in nonaxisymmetric geometry

AU - Rewoldt, G.

AU - ku, L. P.

AU - Tang, W. M.

AU - Cooper, W. A.

PY - 1999/12

Y1 - 1999/12

N2 - A fully kinetic assessment of the stability properties of toroidal drift modes has been obtained for nonaxisymmetric (stellarator) geometry, in the electrostatic limit. This calculation is a comprehensive solution of the linearized gyrokinetic equation, using the lowest-order “ballooning representation” for high toroidal mode number instabilities, with a model collision operator. Results for toroidal drift waves destabilized by temperature gradients and/or trapped particle dynamics are presented, using three-dimensional magnetohydrodynamic equilibria generated as part of a design effort for a quasiaxisymmetric stellarator. Comparisons of these results with those obtained for typical tokamak cases indicate that the basic trends are similar.

AB - A fully kinetic assessment of the stability properties of toroidal drift modes has been obtained for nonaxisymmetric (stellarator) geometry, in the electrostatic limit. This calculation is a comprehensive solution of the linearized gyrokinetic equation, using the lowest-order “ballooning representation” for high toroidal mode number instabilities, with a model collision operator. Results for toroidal drift waves destabilized by temperature gradients and/or trapped particle dynamics are presented, using three-dimensional magnetohydrodynamic equilibria generated as part of a design effort for a quasiaxisymmetric stellarator. Comparisons of these results with those obtained for typical tokamak cases indicate that the basic trends are similar.

KW - BALLOONING INSTABILITY

KW - GEOMETRY

KW - KINETICS

KW - MHD EQUILIBRIUM

KW - PLASMA CONFINEMENT

KW - PLASMA DRIFT

KW - PLASMA SIMULATION

KW - PLASMA WAVES

KW - STELLARATORS

KW - TEMPERATURE DISTRIBUTION

KW - TOROIDAL CONFIGURATION

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U2 - 10.1063/1.873757

DO - 10.1063/1.873757

M3 - Article

AN - SCOPUS:33645618335

SN - 1070-664X

VL - 6

SP - 4705

EP - 4713

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 12

ER -

Drift mode calculations in nonaxisymmetric geometry

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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