Suppressing magnetic island growth by resonant magnetic perturbation

Interaction of a Magnetic Island Chain in a Tokamak Plasma with a Resonant Magnetic Perturbation of Rapidly Oscillating Phase

Resonant magnetic perturbation effect on the tearing mode dynamics

The tearing mode (TM) is a resistive instability that can arise in magnetically confined plasmas. The TM can be driven unstable by the gradient of the plasma current. When the mode grows it destroys the magnetic field symmetry and reconnects the magnetic field in the form of a so-called magnetic island. The TMs are inherent to a type of device called the reversed-field pinch (RFP), which is a d...

Edge localized mode control with an edge resonant magnetic perturbation

R. A. Moyer, T. E. Evans, T. H. Osborne, P. R. Thomas, M. Becoulet, J. Harris, K.-H. Finken, J. A. Boedo, E. J. Doyle, M. E. Fenstermacher, P. Gohil, R. J. Groebner, M. Groth, G. L. Jackson, R. J. La Haye, C. J. Lasnier, A. W. Leonard, G. R. McKee, H. Reimerdes, T. L. Rhodes, D. L. Rudakov, M. J. Schaffer, P. B. Snyder, M. R. Wade, G. Wang, J. G. Watkins, W. P. West, and L. Zeng General Atomics...

Resonant magnetic perturbation effects on pedestal structure and ELMs

The plasma transport processes by which externally applied resonant magnetic field perturbations (RMPs) mitigate or suppress edge localized modes (ELMs) in low collisionality tokamak H-mode plasmas are explored. Experimental data from DIII-D indicates the dominant RMP-induced transport occurs at the pedestal top where electron temperature gradient scale lengths increase up to 3 times more than ...

Two-fluid magnetic island dynamics in slab geometry. II. Islands interacting with resistive walls or resonant magnetic perturbations

The dynamics of a propagating magnetic island interacting with a resistive wall or an externally generated, resonant magnetic perturbation is investigated using two-fluid, drift-smagnetohydrodynamicald sMHDd theory in slab geometry. In both cases, the island equation of motion is found to take exactly the same form as that predicted by single-fluid MHD theory. Three ion polarization terms are f...