The D-shaped main field coil for the ASDEX fusion experiment at the Max Planck Institute for Plasma Physics at Garching near Munich

In view of the looming raw-material crisis in the field of conventional energy generation, the experimental program for controlled nuclear fusion is everywhere regarded as of the highest importance. The ASDEX fusion experiment, too, serves for research into important aspects of the problem. An essential component of the experimental apparatus associated with the project are the 16 main field coils, arranged in star formation, which generate the toroidal magnetic field. In the paper, the ASDEX experiment is introduced and the most important steps in the manufacturing process of the main-field coils are described. (Auth.)