Credit: (Image credit - Bernhard Ludewig, Max Planck Institute of Plasma Physics)
Figure SEQ Figure \* ARABIC 1: Wide angle view of the interior of the Wendelstein 7-X plasma vessel, showing the different armour materials designed to take up the heat from the plasma (Image credit – Glen Wurden, Max Planck Institute of Plasma Physics). The surface contour of the wall follows the shape of the plasma. On average, the radius of the plasma is 55 cm.