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    • 4. 发明公开
    • Current lead
    • Stromzuleitung。
    • EP0464498A2
    • 1992-01-08
    • EP91110187.1
    • 1991-06-20
    • KABUSHIKI KAISHA TOSHIBA
    • Yazawa, Takashi, c/o Intellectual Property Div.Yasuda, Satoshi, c/o Intellectual Property Div.
    • H01R4/68H01F7/22
    • H01B7/423H01F6/065H01R4/68Y10S505/885Y10S505/90
    • According to this invention, a superconducting magnet (3) is arranged in a helium tank (5), and the superconducting magnet (3) cooled to a very low temperature by liquid helium in the helium tank (5) is connected to a power source kept at room temperature by a current lead (10a) and a current lead (10b). The current leads (10a, 10b) are constituted by conductors (11a, 11b) made of copper or a copper alloy having a residual resistivity of 5 × 10⁻⁸ Ω·m or more. In a helium tank (15), a persistent current switch (14), cooled by liquid helium, for connecting the conductor (11a) to the conductor (11b), is arranged. The persistent current switch (14) magnetizes the superconducting magnet to a persistent current mode and demagnetizes it from the persistent current mode. The helium tank (15) is arranged in a vacuum housing (16).
    • 根据本发明,超导磁体(3)设置在氦罐(5)中,并且通过氦罐(5)中的液氦冷却到非常低的温度的超导磁体(3)被连接到电源 通过电流引线(10a)和电流引线(10b)在室温下保持。 电流引线(10a,10b)由具有5×10 -8Ω欧姆或以上的残留电阻率的铜或铜合金制成的导体(11a,11b)构成。 在氦罐(15)中,布置有用于将导体(11a)连接到导体(11b)的由液氦冷却的持续电流开关(14)。 持续电流开关(14)将超导磁体磁化成持续电流模式并将其从持续电流模式中去磁。 氦罐(15)布置在真空壳体(16)中。