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介绍了一种临界电流测试系统,用于研究钇钡铜氧(YBCO)高温超导带材在不同温度以及不同磁场强度环境下的临界电流特性,该系统基于四引线法,其主要包括一孔径70mm、最高磁场16T的背景磁体以及低温杜瓦;Keithley 2182A纳伏表,PCI-9114数据采集卡搭建的数据采集系统,以及Lakeshore 340温控仪的温度控制系统。利用该系统进行YBCO带材分别处于平行场及垂直场时不同温度及磁场强度环境下的临界电流测试,得到了YBCO带材在低温环境下的临界电流特性,为YBCO带材的应用及研究提供依据。
A critical current test system is introduced to study the critical current characteristics of yttrium barium copper oxide (YBCO) high temperature superconducting tapes under different temperatures and different magnetic field strengths. The system is based on the four-lead method and mainly includes an aperture 70mm, the highest magnetic field of 16T background magnet and low temperature Dewar; Keithley 2182A nanovoltmeter, PCI-9114 data acquisition card built data acquisition system, and temperature control system Lakeshore 340 temperature control system. By using this system, the critical current of YBCO strip under different temperature and magnetic field is tested under the condition of parallel field and vertical field respectively. The critical current characteristics of YBCO strip at low temperature are obtained. The application and research of YBCO strip are provided in accordance with.