Tokamak discharges with improved energy confinement properties arising from internal
transport barriers (ITBs) have certain attractive features, such as a large bootstrap current …

The differences and similarities between the internal transport barriers (ITBs) of tokamak and
helical plasmas are reviewed. By comparing the characteristics of the ITBs in tokamak and …

The understanding and predictive capability of transport physics and plasma confinement is
reviewed from the perspective of achieving reactor-scale burning plasmas in the ITER …

Poloidal and toroidal rotation has been recognized to play an important role in heat transport
and magnetohydrodynamic (MHD) stability in tokamaks and helical systems. It is well known …

In reduced recycling discharges in the Large Helical Device, a super dense core plasma
develops when a series of pellets are injected. A core region with density as high as 4.5× 10 …

This paper proposes a control-oriented approach to the tokamak plasma current profile
dynamics. It is established based on a consistent set of simplified relationships, in particular …

The deuterium (D) operation was initiated in the LHD in 2017. In the first campaign of the D
experiments, we successfully extended the high temperature regime in the LHD. The new …

Abstract Analysis of experiments performed at different heating powers and magnetic field
intensities shows that the existence of internal transport barriers in JET can be inferred in …

The formation mechanism of internal transport barriers (ITBs) in flux-driven turbulence is
studied by means of the full-f gyrokinetic code GKNET. In the adiabatic electron case with a …

Tokamaks have demonstrated excellent plasma confinement capability because of their
symmetry but has an intrinsic drawback because of their pulsed inductive operation. Efforts …