A device for critical current versus strain measurements up to 1000 A and 17 T on 80 cm long HTS and LTS technical superconductors
A device for critical current versus strain measurements up to 1000 A and 17 T on 80 cm long HTS and LTS technical superconductors
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DOI：
10.1088/0953-2048/16/9/307
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发表时间：
2003-09
影响因子：
3.6
通讯作者：
D. Uglietti;B. Seeber;V. Abacherli;A. Pollini;D. Eckert;R. Flükiger
中科院分区：
文献类型：
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作者：
D. Uglietti;B. Seeber;V. Abacherli;A. Pollini;D. Eckert;R. Flükiger
我们开发了一种设备，用于80厘米长的技术超导导线的机电特性，在4.2 K至17 t时承载高达1000 a。我们的设备基于沃尔特斯弹簧（WASP）的概念，它使我们能够测量长导线（高达80厘米）并获得应用应变值的绝对测量值。因此，可以测量低至0.1 μ V cm - 1的技术超导导线和胶带的电压-电流关系，这是考虑到需要持续模式操作的NMR高场磁体等应用的重要要求。在这篇文章中，我们报告了工业Nb3Sn和BSCCO在高达17 T的电场下的Ic测量与应变的关系：电压-电流关系作为应变和磁场的函数已经测量了超过三十年的电场。
We have developed a device for the electromechanical characterization of 80 cm long technical superconducting wires carrying up to 1000 A at 4.2 K up to 17 T. Our device is based on the concept of the Walters spring (WASP), which allows us to measure long length wires (up to 80 cm) and to obtain an absolute measurement of the applied strain value. It is thus possible to measure the voltage–current relation of technical superconducting wires and tapes down to 0.1 µV cm−1, an important requirement for the characterization in view of applications like NMR high field magnets which require persistent mode operation. In this contribution, we report on Ic measurements versus strain at fields up to 17 T for industrial Nb3Sn and BSCCO: the voltage–current relation as a function of strain and magnetic field has been measured over three decades of electric field.