An investigation of the characterizations and development of HTS joints in BSCCO 2212/Ag composites

Superconducting joints are required to provide the long lengths of conductor and the temporal stability necessary in HTS magnets. The Delta B program at the NHMFL has initially developed the joint technology on BSCCO 2212 tapes using a wrap joint technique. Different combinations of stock conductor, including both monocore and multifilament tapes, and fill materials have been investigated in several prototype generations. The transport properties, in-field performance, and microstructure of the most promising prototypes are investigated. This wrap joint technique has produced several joints with critical currents higher than the critical currents of their respective unjoined conductor sections.