\def\default{
\GWwrapfigure{Tokamak/VacuumVessel/BasicInfo/fig}
The GOLEM tokamak has a stainless steel toroidally shaped chamber with major radius (from the central column axis to the center of the vessel) \GWPhysQuantValueWithName{Tokamak/VacuumVessel/TechnologicalQuantities/MajorRadius}, the minor radius (the maximum radius of the plasma from the vessel center) \GWPhysQuantValueWithName{Tokamak/VacuumVessel/TechnologicalQuantities/MinorRadius}) with 18 diagnostic ports, which are organized in six groups of three ports as shown in figure 
\ref{fig:Tokamak/VacuumVessel/BasicInfo}. Each group consists of a top, bottom and a mid plane port. The main ({\em i.e.}, the largest) ports are located on the North and on the South side of the torus; 45$^{\circ}$ from them to each side, are the other groups: South-East, South-West, North-East and North-West. 
\par
The vessel is made of two layers with a free space in between:
\begin{itemize}
\item The inner layer, which contains the plasma column, is called liner. It is made of melted cylindrical waved tin-
plate segments, 0.2 mm strong, with diameter of 200-230 mm. Besides to serve as a vacuum chamber, liner is
used to stabilize the plasma column position by inducing Foucault currents.
\item The second layer of the vessel is called copper coating, which covers the liner. The coating is about 10 mm
strong and was water cooled in the CASTOR era. Its historical purpose is to serve as the second vacuum layer, however this function is
not used anymore.
\end{itemize} 
}

\def\GWpard{\GWifigure{width=0.75\textwidth}{Tokamak/VacuumVessel/BasicInfo/fig/OPmodel.jpg}{Diagnostic ports of the GOLEM tokamak.}{Tokamak/VacuumVessel/BasicInfo/fig}}