%info@http:://golem.fjfi.cvut.cz/wiki/root/GW4reports
\def\GWslide{\slide{Spontaneous formation of a transport barrier in He plasma}{
   \GWif{width=\tw}{/Experiments/TransportBarrierInHe/Slides/Macha-2025-BasicResult/Fig.png}{Radial profiles of $T_e$ illustrating the formation of steep gradient.}
\begin{itemize}\footnotesize
  \item A spontaneous transport barrier was observed in helium plasmas on the GOLEM tokamak.
  \item The barrier formation is characterized by a steep increase of the electron temperature gradient at the plasma edge.
  \item Systematic scans of heating power and gas pressure were performed in both hydrogen and helium plasmas.
  \item In helium plasmas, the strength of the transport barrier increases with heating power and pressure.
  \item These results provide experimental insight into edge transport physics in small tokamaks.
\end{itemize}
}}