Key Technologies for 2G HTS Tapes Fabrication

Second generation high temperature superconducting (2G-HTS) tapes are considered one of the most promising practical superconductors that can be used in power and magnet applications. The development and application of second generation high temperature superconducting (2G-HTS) tapes have attracted much attention in China recently. Progresses of up-scaling 2G-HTS tape production with high performance at Shanghai Superconductor Technology (SST) are reported in this book. The key technology is a multi-plume-multi-turn pulsed laser deposition system combined with the so-called “radiation assisted conductive heater”. Superconducting tapes with piece length of up to 500 meters have been fabricated. High Ic values at 77 K self-field (over 550 A/cm-width) or at low temperature high magnetic field conditions (over 560 A/4 mm-width at 4.2 K 10 T perpendicular field) have been achieved. Lamination and jointing techniques have also been developed by SST for power and magnet applications.