Wendelstein 7-X Viewed from the Outside (IMAGE) American Physical Society Caption Figure 1:(Left) Wendelstein 7-X viewed from the outside. Visible is a section of the donut shaped vessel which houses the superconducting magnetic field coils. The surface contour of the wall follows the shape of the plasma. On average, the radius of the plasma is 55 cm. Credit (Image credit - Glen Wurden, Max Planck Institute of Plasma Physics) Usage Restrictions image copyrighted License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.