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 …

Nuclear fusion is one of the most attractive alternatives to carbon-dependent energy
sources. Harnessing energy from nuclear fusion in a large reactor scale, however, still …

The non-local transport nature revealed by the research in transient phenomena of toroidal
plasma is reviewed. The following non-local phenomena are described: core temperature …

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 …

In magnetic fusion plasmas, a transport barrier is essential to improve the plasma
confinement. The key physics behind the formation of a transport barrier is the suppression …

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 …

This letter provides a new physical insight into the fast ion effects on turbulence in plasmas
having a high fast ion fraction and peaked fast ion density profile. We elucidate turbulence …

The internal transport barrier (ITB) has been obtained in ELMy H-mode plasmas by neutron
beam injection and lower hybrid wave heating on the Experimental Advanced …

Improved energy confinement mode (I-mode) has been observed on the HL-2A tokamak.
The I-mode features an edge transport barrier (ETB) in electron temperature and a low …

A strong relationship between the fishbone instability and internal transport barrier (ITB)
formation has been found on the Experimental Advanced Superconducting Tokamak (EAST) …