Final assembly of Wendelstein 7-X

A technician in a clean suit inspects the interior of a large, cylindrical structure lined with hexagonal panels.

Final assembly work in November 2021 on the plasma vessel of Wendelstein 7-X in Greifswald, Germany; credit: MPI for Plasma Physics / Jan Hosan

Artists concept of W7-X stellarator

A 3D rendering shows a complex, interwoven structure of blue and yellow ribbons forming a circular shape.

Computer graphic: shape of the magnet coils and plasma of the Wendelstein 7-X fusion device in Greifswald, Germany; credit: MPI for Plasma Physics