Heavy ion beam probing (HIBP) is a unique diagnostics to study the core plasma potential
and turbulence. Advanced HIBPs operate in the T-10 tokamak and TJ-II flexible heliac with …

Since the first H-mode transitions were observed in TJ-II plasmas in 2008, an extensive
experimental effort has been done aiming at better physics understanding of confinement …

Enhanced confinement is observed in neutral beam injector (NBI)-heated hydrogen
discharges made in the stellarator TJ-II after the injection of a single cryogenic fuel pellet into …

Kurchatov Institute is upgrading now the T-15 tokamak to the machine with D-shaped
plasma and copper magnetic system, capable for realizing lower and upper single-null and …

Electric field Ε or electric potential φ plays a key role in the transport and turbulence of
toroidal plasmas. It is believed that mean radial E r suppresses the turbulence eddies via E× …

Abstract 2D plasma potential ϕ distribution was measured in the electron cyclotron
resonance heating (ECRH) and neutral beam injection (NBI) plasmas of the TJ-II stellarator …

Geodesic acoustic modes, Alfvén eigenmodes, stationary and oscillating components of the
electric field, and their relations to plasma confinement have been studied. Theoretical …

Abstract Heavy Ion Beam Probing (HIBP) is a unique tool for plasma potential
measurements. In the TJ-II stellarator (CIEMAT, Madrid, Spain) HIBP is capable to move the …

The study of Alfvén eigenmodes (AEs) driven by fast particles in toroidal plasmas is of a
great importance for future fusion reactor with plasma, dominating by fusion alphas. The …

2D poloidal contour plots of plasma potential, plasma density, and their fluctuations have
been measured in low density plasmas sustained by Electron Cyclotron Resonance Heating …