WENDELSTEIN 7-X at the transition to assembly

The WENDELSTEIN 7-X (W7-X) represents the continuation of fusion experiments of the stellarator type at the Max-Planck Institute for Plasma Physics. The experiment W7-X is built at Greifswald in the northeast of Germany. The size of the device (725 t, height of approximately 4.5 m, diameter approximately 16 m), a superconductive magnet system (MS), extremely narrow construction conditions and complexly bent three-dimensional components distinguish the W7-X from earlier stellarators at the Max-Planck Institute. This paper gives a survey of the applied assembly technology and presents the status of the preparations of the base machine and the machine periphery.