Nuclear fusion technologies have re-gained momentum in the last decade thanks to their
disruptive potential in different fields, such as energy production and space propulsion, and …

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 …

The objectives of NSTX-U research are to reinforce the advantages of STs while addressing
the challenges. To extend confinement physics of low-A, high beta plasmas to lower …

Recent results from MAST Upgrade are presented, emphasising understanding the
capabilities of this new device and deepening understanding of key physics issues for the …

The work presents the results of the energy confinement study carried out on the compact
spherical tokamak Globus-M2 with a toroidal magnetic field as high as 0.8 T. A reproducible …

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 …

A new model of heating, current drive, torque and other effects of neutral beam injection on
NSTX-U that uses neural networks has been developed. The model has been trained and …

MAST-U is equipped with on-axis and off-axis neutral beam injectors (NBI), and these
external sources of super-Alfvénic deuterium fast-ions provide opportunities for studying a …

The current work reports on the significant rise of the fusion triple product in experiments
carried out on the compact spherical tokamak (ST) Globus-M2 with a twofold increase in the …

Entering its final construction phase, the international fusion experiment, ITER, will
demonstrate much of the science and technology for net fusion gain. In parallel, major …