Dynamics of shear Alfvén waves and energetic particles are crucial to the performance of
burning fusion plasmas. This article reviews linear as well as nonlinear physics of shear …

The area of energetic particle (EP) physics in fusion research has been actively and
extensively researched in recent decades. The progress achieved in advancing and …

Repetitive bursting instabilities with strong frequency chirping occur in high-beta, beam-
heated plasmas with safety factor q> 1 in the DIII-D tokamak. Although the mode structures …

Externally applied, non-axisymmetric magnetic fields form the basis of several relatively
simple and direct methods to control magnetohydrodynamic (MHD) instabilities in a …

This paper explores a range of high-performance equilibrium scenarios achievable with
neutral beam heating in the NSTX-Upgrade device (Menard JE 2012 Nucl. Fusion 52 …

The Super H-mode, a regime with high pedestal pressure and stored energy, is explored on
DIII-D and combined with an ion transport barrier in the plasma core to increase …

A new bursting m= 1/n= 1 instability (m, n: poloidal and toroidal mode numbers) with rapid
frequency chirping down has been observed for the first time in a helical plasma with intense …

A resistive interchange mode of the $ m= 1/n= 1$ structure ($ m $, $ n $: poloidal and
toroidal mode numbers, respectively) with a bursting character and rapid frequency chirping …

Plasma stabilization due to a nearby conducting wall can provide access to better
performance in some scenarios in tokamaks. This was proved by experiments with an …

Transport and loss of beam injected energetic particles (EPs) due to three-dimensional
perturbations, associated with the external kink (XK) instability and fishbone-like mode …