| 摘要 |
PURPOSE:To enhance the reliability while providing a sufficient assembling space by providing a first current lead having a decreased cross-sectional area at a conducting part and an increased heat transmission area for the gaseous refrigerant, and a second current lead having increased cross-sectional area at the conducting part and increased contact area at a connecting part with a rising stud, thereby suppressing intrusion of heat and decreasing the connection resistance. CONSTITUTION:The superconducting rotor comprises a first honeycomb current lead 7a and a second semicylindrical current lead 7b. Since the first current lead 7a on the low temperature side has low electric resistance, electrical loss is reduced even if the cross-section area at the conducting part is small when a high current is fed to a superconducting winding 2. Furthermore, intrusion of heat can be suppressed and since the high temperature side second current lead 7b has large cross-section area at the conducting part thereof, generation of heat can be suppressed. This structure suppresses intrusion of heat and decreases the connection resistance while ensuring a sufficient assembling space thus enhancing the reliability. |
