NbTi复合导体临界电流的测量

Critical Current Measurements for NbTi Conductors

】介绍了中国科学院等离子体物理研究所强磁场实验室在测试ＮｂＴｉ复合导体临界电流的实验中所遇到的技术问题，以及解决这些问题的方法。这些问题是强磁场、大电流下微弱超导正常态转变信号的拾取；样品性能退化及其防止；样品的失超保护；样品的更换以及电源对测量值的影响等。

This paper describes the skins in the critical current measurement of NbTi superconductors. The important points are the acquisition of the quench voltage signal under high magnetic field(up to 7T) and quick current charging, the method to avoid performance degradation of the measured samples, and the protection of the quench samples. The experimental set up for the critical current measurements is reported.