In this paper, we review the thermal plasma confinement and transport properties observed
and predicted in low aspect ratio tokamaks, or spherical tokamaks (STs), which can depart …

STEP is a spherical tokamak prototype power plant that is being designed to demonstrate
net electric power. The design phase involves the exploitation of plasma models to optimise …

A new nonlinear gyro-kinetic flux tube code (GKW) for the simulation of micro instabilities
and turbulence in magnetic confinement plasmas is presented in this paper. The code …

The spherical tokamak (ST) is a leading candidate for a Fusion Nuclear Science Facility
(FNSF) due to its compact size and modular configuration. The National Spherical Torus …

Electromagnetic gyrokinetic instabilities in STEP - IOPscience Skip to content IOP Science
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Toroidal momentum transport mechanisms are reviewed and put in a broader perspective.
The generation of a finite momentum flux is closely related to the breaking of symmetry …

The mega amp spherical tokamak (MAST) was a low aspect ratio device (R/a= 0.85/0.65~
1.3) with similar poloidal cross-section to other medium-size tokamaks. The physics …

Toroidal and slab ETG instability dominance in the linear spectrum of JET-ILW pedestals -
IOPscience Skip to content IOP Science home Accessibility Help Search all IOPscience …

Direct multiscale coupling of a transport code to gyrokinetic turbulence codesa) | Physics of
Plasmas | AIP Publishing Skip to Main Content Umbrella Alt Text Umbrella Alt Text Close …

Nonlinear gyrokinetic simulations are conducted to investigate turbulent transport in
tokamak plasmas with rotational shear. At sufficiently large flow shears, linear instabilities …