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使用超导race-track型磁体测量大型超导导体交流损耗的一种新型测定装置已经试制出来。文中阐述了该装置的特征、测量原理和方法,并附有测定例子。尽管该装置是小型的,但它具有频率测量范围宽、相对测试空间大等优点。通过对高场脉冲磁体中使用的A1安定化Nb_3Sn大型超导导体交流损耗的测定,获得了一般测试装置所未能得到的新的信息,表明了该装置具有相当的实效性。
A new type of measuring device for measuring the AC loss of large superconducting conductors using superconducting race-track magnets has been developed. The paper describes the characteristics of the device, measuring principle and method, with the measurement example. Although the device is small, it has the advantages of wide frequency measurement range and relatively large test space. By measuring the AC loss of A1 stabilized Nb3Sn large superconducting conductor used in high-field pulsed magnets, new information that can not be obtained by the conventional test equipment is obtained, which shows that the device has considerable effectiveness.