Magnetic drift kinetic damping of the resistive wall mode in large aspect ratio tokamaks

Yueqiang Liu; M. S. Chu; C. G. Gimblett; R. J. Hastie

doi:10.1063/1.2978091

Magnetic drift kinetic damping of the resistive wall mode in large aspect ratio tokamaks

Yueqiang Liu, M. S. Chu, C. G. Gimblett, R. J. Hastie

Institute of Space and Plasma Sciences

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

75 Citations (Scopus)

Abstract

An analytical, large aspect ratio, calculation of the drift-kinetic energy perturbation is carried out for the resistive wall mode, due to the mode resonance with the magnetic precession drifts of trapped thermal ions and electrons. Four asymptotic cases are identified and analyzed in detail. Generally, a partial stabilization of the mode is possible thanks to the kinetic correction to the perturbed plasma energy. A complete stabilization can occur only in a narrow space of the plasma equilibrium parameters. Kinetic destabilization of the mode is also possible due to a finite pressure correction to the precession drift frequency.

Original language	English
Article number	092505
Journal	Physics of Plasmas
Volume	15
Issue number	9
DOIs	https://doi.org/10.1063/1.2978091
Publication status	Published - 2008

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1063/1.2978091

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title = "Magnetic drift kinetic damping of the resistive wall mode in large aspect ratio tokamaks",

abstract = "An analytical, large aspect ratio, calculation of the drift-kinetic energy perturbation is carried out for the resistive wall mode, due to the mode resonance with the magnetic precession drifts of trapped thermal ions and electrons. Four asymptotic cases are identified and analyzed in detail. Generally, a partial stabilization of the mode is possible thanks to the kinetic correction to the perturbed plasma energy. A complete stabilization can occur only in a narrow space of the plasma equilibrium parameters. Kinetic destabilization of the mode is also possible due to a finite pressure correction to the precession drift frequency.",

author = "Yueqiang Liu and Chu, {M. S.} and Gimblett, {C. G.} and Hastie, {R. J.}",

note = "Funding Information: This work was partly funded jointly by the United Kingdom Engineering and Physical Sciences Research Council and by the European Communities under the contract of Association between EURATOM and UKAEA. The views and opinions expressed herein do not necessarily reflect those of the European Commission. This work was also supported by the U.S. Department of Energy under Contract No. DE-FG03-956ER54309.",

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T1 - Magnetic drift kinetic damping of the resistive wall mode in large aspect ratio tokamaks

AU - Liu, Yueqiang

AU - Chu, M. S.

AU - Gimblett, C. G.

AU - Hastie, R. J.

N1 - Funding Information: This work was partly funded jointly by the United Kingdom Engineering and Physical Sciences Research Council and by the European Communities under the contract of Association between EURATOM and UKAEA. The views and opinions expressed herein do not necessarily reflect those of the European Commission. This work was also supported by the U.S. Department of Energy under Contract No. DE-FG03-956ER54309.

PY - 2008

Y1 - 2008

N2 - An analytical, large aspect ratio, calculation of the drift-kinetic energy perturbation is carried out for the resistive wall mode, due to the mode resonance with the magnetic precession drifts of trapped thermal ions and electrons. Four asymptotic cases are identified and analyzed in detail. Generally, a partial stabilization of the mode is possible thanks to the kinetic correction to the perturbed plasma energy. A complete stabilization can occur only in a narrow space of the plasma equilibrium parameters. Kinetic destabilization of the mode is also possible due to a finite pressure correction to the precession drift frequency.

AB - An analytical, large aspect ratio, calculation of the drift-kinetic energy perturbation is carried out for the resistive wall mode, due to the mode resonance with the magnetic precession drifts of trapped thermal ions and electrons. Four asymptotic cases are identified and analyzed in detail. Generally, a partial stabilization of the mode is possible thanks to the kinetic correction to the perturbed plasma energy. A complete stabilization can occur only in a narrow space of the plasma equilibrium parameters. Kinetic destabilization of the mode is also possible due to a finite pressure correction to the precession drift frequency.

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Magnetic drift kinetic damping of the resistive wall mode in large aspect ratio tokamaks

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