Geodesic acoustic modes (GAMs) are ubiquitous oscillatory flow phenomena observed in
toroidal magnetic confinement fusion plasmas, such as tokamaks and stellarators. They are …

The excitation of collective instabilities by super-thermal particles in hot plasmas and the
related transport processes attract increasing interest due to their fundamental challenges …

Alpha particles with energies on the order of megaelectronvolts will be the main source of
plasma heating in future magnetic confinement fusion reactors. Instead of heating fuel ions …

This paper addresses non-linear gyrokinetic simulations of ion temperature gradient (ITG)
turbulence in tokamak plasmas. The electrostatic GYSELA code is one of the few …

In recent years tokamak experiments and modelling have increasingly indicated that the
interaction between suprathermal (fast) ions and thermal plasma can lead to a reduction of …

In this paper, recent progress on experimental analysis and theoretical models for non-local
transport (non-Fickian fluxes in real space) is reviewed. The non-locality in the heat and …

Zonal flows and their high-frequency counterpart, the geodesic acoustic modes (GAMs) are
considered as a possible mechanism of the plasma turbulence self-regulation. In the T-10 …

The role of energetic particles (EPs) in fusion plasmas is unique as they could act as
mediators of cross-scale couplings. More specifically, EPs can drive instabilities on the …

Abrupt and strong excitation of a mode has been observed when the frequency of a chirping
energetic-particle driven geodesic acoustic mode (EGAM) reaches twice the geodesic …

Geodesic acoustic modes (GAM) are oscillating zonal structures unique to toroidal plasmas,
and have been extensively studied in the past decades due to their potential capabilities of …