Design and Construction of the Superconducting Bussystem for the Stellarator W7-X

In the framework of cooperation between the Max-Planck-Institut for Plasma Physics (IPP) and the Forschungszentrum Julich (FZJ) essential work packages of the stellarator Wendelstein 7-X (which is presently under construction at Greifswald, Germany) have been taken over. For the superconducting bus system an overall concept of the project was elaborated with the goal to optimize working steps and to simplify the system assembly. The technical specifications are the basis for the design, construction, qualification, manufacturing and assembly of the bus and their appropriate supports. In order to compensate of the magnetic fields due to the bus currents and to facilitate bus assembly, a suitable bus topology was developed