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The Electrical Resistance of Rutherford-Type Superconducting Cable Splices

2014; IEEE Council on Superconductivity; Volume: 25; Issue: 3 Linguagem: Inglês

10.1109/tasc.2014.2360296

1558-2515

S. Heck, C. Scheuerlein, J. Fleiter, A. Ballarino, L. Bottura,

Electronic Packaging and Soldering Technologies

The electrical resistance of Large Hadron Collider main busbar cable lap splices produced by soft soldering has been measured with two independent methods as a function of intercable contact area and for splices made of cables with various defects. For defect-free lap splices, the resistance increases from 0.3 to 10 nΩ (at 4.3 K in self-field) when reducing the cable overlap length from 120 to 3 mm, as expected assuming that the resistance is inversely proportional to the intercable contact area. The resistance of bridge splices that connect side-by-side cables can be predicted from the lap splice resistances and the overlap areas involved.