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

Fusion performance in tokamaks depends on the core and edge regions as well as on their
nonlinear feedbacks. The achievable degree of edge confinement under the constraints of …

The XGC1 edge gyrokinetic code is used to study the width of the heat-flux to divertor plates
in attached plasma condition. The flux-driven simulation is performed until an approximate …

A fast edge turbulence suppression event has been simulated in the electrostatic version of
the gyrokinetic particle-in-cell code XGC1 in a realistic diverted tokamak edge geometry …

The efficient operation of a tokamak is limited by several constraints, such as the transition to
high confinement or the density limits occurring in both confinement regimes. These …

Turbulence simulations in diverted geometry across the edge and scrape-off layer (SOL) of
ASDEX Upgrade are performed with the GRILLIX code (Stegmeir et al 2019 Phys. Plasmas …

ABSTRACT A major scientific success story of magnetic fusion research in the past several
decades has been the theoretical development and experimental testing of the process of …

The relation between the macroscopic input power required at ASDEX Upgrade to access
the H-mode Pthr and the microscopic E× B shear has been investigated via fast charge …

The results of flux-driven, two-fluid simulations in single-null configurations are used to
investigate the processes determining the turbulent transport in the tokamak edge. Three …

Understanding and predicting turbulence in the edge and scrape-off layer (SOL) is critical for
the optimization of magnetic confinement fusion devices. While there has been progress …