Effect of shear equilibrium flow in Tokamak plasma on resistive wall modes

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2013 Chinese Physical Society and IOP Publishing Ltd
, , Citation Li Li and Liu Yue 2013 Chinese Phys. B 22 075203 DOI 10.1088/1674-1056/22/7/075203

1674-1056/22/7/075203

Abstract

A code named LARWM with non-ideal magnetohydrodynamic equations in cylindrical model is used to describe the instability in Tokamak plasma surrounded by a conducting wall with finite resistivity. We mainly take three factors related to the shear equilibrium plasma flow into consideration to study the stabilizing effect of the shear flow on the resistive wall modes (RWMs). The three factors are the velocity amplitude of flow, the shear rate of flow on plasma surface, and the inertial energy of equilibrium plasma flow. In addition, a local shear plasma flow is also calculated by the LARWM code. Consequently, it is found that the inertial energy of the shear equilibrium plasma flow has an important role in the stabilization of the RWMs.

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10.1088/1674-1056/22/7/075203