Design, fabrication and testing of a heater-trigged high-Tc superconducting power supply

This paper deals with the design and fabrication of a heater-trigged high-T c superconducting (HTS) power supply. Its characteristics have been analyze d through experiments. A heater-trigged HTS power supply consists of two he aters, an electromagnet, and a YBCO bulk superconductor. The timing sequent ial control of two heaters and an electromagnet is an important factor to g enerate pumping-current in the bulk YBCO superconductor. The thermal analys is of switching parts of the YBCO superconductor according to the heater in put was carried out. Based upon the analysis, the 0.6 T electromagnet and t he 2.3 A de heater current were optimally derived, and 190 ser and 380 sec for the pumping period were selected in this experiment. In the experiment, the maximum pumping current reached about 12 A.