Control of transport-barrier relaxations by resonant magnetic perturbations.
Transport-barrier relaxation oscillations in the presence of resonant magnetic perturbations are investigated using three-dimensional global fluid turbulence simulations from first principles at the edge of a tokamak. It is shown that resonant magnetic perturbations have a stabilizing effect on these relaxation oscillations and that this effect is due mainly to a modification of the pressure profile linked to the presence of both residual magnetic island chains and a stochastic layer.
Leconte
M
M
France-Japan Magnetic Fusion Laboratory, Université de Provence, Case 321, 13397 Marseille Cedex 20, France.
Beyer
P
P
Garbet
X
X
Benkadda
S
S