Experimental results of a 70 kA high temperature superconductor current lead demonstrator for the ITER magnet system

In the frame of the European Fusion Technology Programme, the Forschungszentrum Karlsruhe and the CRPP Villigen have designed and built a 70 kA current lead for the ITER TF Coils using High Temperature Superconductors (HTS). At the beginning of 2004 the HTS current lead was installed and tested in t...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2005-06, Vol.15 (2), p.1496-1499
Main Authors: Heller, R., Darweschsad, S.M., Dittrich, G., Fietz, W.H., Fink, S., Herz, W., Hurd, F., Kienzler, A., Lingor, A., Meyer, I., Nother, G., Susser, M., Tanna, V.L., Vostner, A., Wesche, R., Wuchner, F., Zahn, G.
Format: Article
Language:English
Subjects:
Applied sciences
Coils
Contact
Copper
Current leads
Electric connection. Cables. Wiring
Electric contacts
Electrical engineering. Electrical power engineering
Electromagnets
Exact sciences and technology
fusion magnets
high temperature superconductor
High temperature superconductors
Lead
Mass flow rate
Plasma temperature
Safety
Safety margins
Steady state
Superconducting coils
Superconducting magnets
Superconductivity
Temperature distribution
Testing
Various equipment and components
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Summary:In the frame of the European Fusion Technology Programme, the Forschungszentrum Karlsruhe and the CRPP Villigen have designed and built a 70 kA current lead for the ITER TF Coils using High Temperature Superconductors (HTS). At the beginning of 2004 the HTS current lead was installed and tested in the TOSKA facility of the Forschungszentrum Karlsruhe. The scope of the experiment was to characterize the current lead in steady state conditions and to explore the operation limits as well. For this, the temperature profile, the contact resistances, the heat load at 4.5 K, the required 50 K He mass flow rate, and the temperature margin were evaluated. The safety margin in case of a loss of He mass flow was studied, too. The paper describes the experimental results as well as the thermal and electrical models developed.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2005.849145