Influence of resistive internal kink on runaway current profile

An extended magnetohydrodynamic model including the effect of runaway current is developed and implemented in the M3D code. Based on this model, a simulation has been carried out to investigate the linear stability and the nonlinear evolution of the n = 1 resistive kink mode in the presence of runaw...

Full description

Saved in:
Bibliographic Details
Published in:Nuclear fusion 2015-02, Vol.55 (2), p.22001-6
Main Authors: Cai, Huishan, Fu, Guoyong
Format: Article
Language:English
Subjects:
Computer simulation
Crashes
disruption
Evolution
Flattening
Nonlinearity
Nuclear fusion
Oscillations
resistive kink
runaway current
Steady state
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An extended magnetohydrodynamic model including the effect of runaway current is developed and implemented in the M3D code. Based on this model, a simulation has been carried out to investigate the linear stability and the nonlinear evolution of the n = 1 resistive kink mode in the presence of runaway current. It is found that sawteeth oscillation is suppressed in a runaway plasma. The nonlinear evolution of the n = 1 mode only leads to a single sawtooth crash before reaching a new steady state axi-symmetric equilibrium with flattened current profile in the plasma core and q(0)>1.
ISSN:0029-5515
1741-4326
DOI:10.1088/0029-5515/55/2/022001