Speaker
Description
High Temperature Superconductor Current Leads, HTS-CL are essential components in superconducting fusion machines like ITER, W7-X and JT-60SA. They connect the electrical bus bars from the power supply system with the superconducting feeders of the different coil systems. KIT has designed, manufactured, tested and delivered 16 HTS-CL for W7-X and 26 HTS-CL for JT-60SA. Here, the operation experience of the HTS-CL in W7-X and JT-60SA is presented. Special attention is given to critical parameters, in particular to the contact resistances between the HTS section and the cold end and the copper heat exchanger (HX), the required He mass flow rate to maintain the temperature at the HTS-HX interface, the heat loss at the cold end, and the temperature margin in the HTS section. Finally, the quench protection of the HTS-CL is discussed.
Disclaimer: The work presented here expressed the views and opinions of the presenter and does not reflect those of the Karlsruhe Institute of Technology.
