Progress in the Manufacture of Long Length YBCO Roebel Cables

We have manufactured lengths of up to 10 m of Roebel cable from wide strips of second generation YBCO wire. The wide strips are first screened using magnetic scanning to check for superconductor defects to avoid incorporating poor quality wire into the cable. Manufacturing issues such as the long length registration of the strand crossovers and the maximum yield from wide strip is discussed. Differences in cutting and winding due to different tape substrate materials are shown to be minimal. We report electrical measurements on samples of HTS Roebel cable. Insulation which protects the assembled conductors from environmental degradation is reported.