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 …

Wendelstein 7-AS was the first modular stellarator device to test some basic elements of
stellarator optimization: a reduced Shafranov shift and improved stability properties resulted …

Since 2016, the JET scientific programme is engaged in a multi-campaign effort including
experiments in D, H and T [1], leading to 2020 and the first experiments with 50%/50% D–T …

Alfvén spectra in a reversed-shear tokamak plasma with a population of energetic ions
exhibit a quasiperiodic pattern of primarily upward frequency sweeping (Alfvén cascade) …

A self-consistent kinetic model is developed to study the stability of the resistive wall mode in
toroidal plasmas. This model is compared with other models based on perturbative …

MAST plasmas with a safety factor above unity and a profile with either weakly reversed
shear or broad low-shear regions, regularly exhibit long-lived saturated ideal …

Experiments designed for generating internal transport barriers in the plasmas of the Joint
European Torus [JET, PH Rebut et al., Proceedings of the 10th International Conference …

The sawtooth instability in tokamak plasmas results in a periodic reorganization of the core
plasma. A typical sawtooth cycle consists of a quiescent period, during which the plasma …

Persistent rapid up and down frequency chirping modes with a toroidal mode number of
zero (n= 0) are observed in the JET tokamak when energetic ions, in the range of several …

The formation of internal transport barriers (ITBs) has been experimentally associated with
the presence of rational q surfaces in both JET and ASDEX Upgrade. The triggering …