| Title |
Analysis of the Operational Characteristic of a High-Tc Superconducting Power Supply for Charging of the Superconducting Magnet |
| Authors |
윤용수(Yun, Yong-Su) ; 김호민(Kim, Ho-Min) ; 안민철(An, Min-Cheol) ; 배덕권(Bae, Deok-Gwon) ; 고태국(Go, Tae-Guk) |
| Keywords |
HTS power supply ; Bi-2223 pancake magnet load ; heater-trigger ; pumping-current |
| Abstract |
This paper presents the design and fabrication of a high-Tc superconducting (HTS) power supply for charging of the HTS magnet load, and its characteristics have been analyzed through experiments. HTS power supply consists of two heaters, an electromagnet, a Bi-2223 solenoid and a Bi-2223 pancake magnet load. In this experiment, 331 mH electromagnet and 0.8 A dc heater current were used, and 8.5 sec and 17 sec were used for pumping period. Mechanism of the superconducting switch is used for heater-trigger. In order to measure the pumping-current with respect to the magnet flux changes, hall sensor was installed at the center of the Bi-2223 pancake load. The experimental observations have been compared with the theoretical predictions. In this experiment, the pumping-current has reached about 1.2 A. In computer simulation, the maximum pumping-current of the system has been predicted to be about 2.7 A. |