Possible solution of the "single strand stability" problem - Special cabledesign

The widely used multistrand superconducting cables demonstrate quench curre nt degradation in AC mode. Often it happens due to premature quench of one strand. It was suggested that changing of the cable's design may improve th e "single strand stability", or stability of a cable in relation to the que nch of a single strand, We are checking this idea by testing several AC mul tistrand superconducting cables made from insulated superconducting strands with different cabling technique. We determined their quench current at di fferent frequencies and current redistribution process in case of the quenc h of one single strand. The experimental results are presented and influenc e of the cable design on the "single strand stability" is discussed.