Electron transport in tokamaks has many different features which are briefly reviewed. The
paper is focused on electron heat transport in conventional tokamak plasmas. An inter …

The heavy ion beam probe diagnostic is used in the TJ-II stellarator to study directly the
plasma electric potential with good spatial (up to 1 cm) and temporal (up to 2 μs) resolution …

A high-resolution multi-position Thomson scattering system, which combines high accuracy
and excellent spatial resolution, is operating on the stellarator TJ-II. Its diagnostic …

Dedicated experiments have been carried out for a systematic comparison of turbulence
wavenumber spectra and perpendicular rotation velocity measured at poloidally separated …

An amplitude modulation reflectometry system is in operation at the stellarator TJ-II.
Recently, the first electron density profiles were obtained, showing good agreement with …

Recent experimental results show that the core electron temperature in the TJ-II stellarator
almost doubles previously obtained values for the same heating power. These plasmas …

In this work we study the influence of magnetic configuration—rotational transform and minor
radius—and plasma parameters—mainly plasma density—on the confinement of low …

TJ-II is a four period, low magnetic shear stellarator (R= 1.5 m, a< 0.22 m, B 0⩽ 1.2 T) which
was designed to have a high degree of magnetic configuration flexibility. In the most recent …

First measurements carried out using radial correlation Doppler reflectometry in the TJ-II
stellarator are presented. Broad scans in the probing beam angle are performed to study the …

Neoclassical theory provides usable expressions for studying transport in toroidal plasmas
and computing the associated radial electric field. An algebraic and three semi-analytical …