准绝热工况下失超装置设计及实验探究

Design and experimental exploration of quenching device under quasi-adiabatic conditions

超导体的失超传播特性对超导磁体的失超保护设计具有重要意义。设计了一种在准绝热工况下,测量不同温度(4.2~80 K)和磁场(0~14 T)下的高温超导体短样品的失超传播特性的装置。该测量系统由背景磁体、测试架、温度控制系统、数据采集系统和直流电源组成。在自场、液氮环境下对装置进行了调试并开展了失超实验,对比结果与其他研究呈现一致趋势。

The propagation characteristics of quench in superconductors are significant importance in the quench protection design of superconducting magnets.A device was designed to measure the quench propagation characteristics of high-temperature superconducting samples at different temperatures(4.2~80 K) and magnetic fields(0~14 T) under adiabatic conditions.The measurement system consists of a background magnet,a test setup,a temperature control system,a data acquisition system,and a DC power supply.The device was calibrated and quench experiments were conducted in a self-field and liquid nitrogen environment.The obtained results show that consistent trends with other studies,indicating the reliability of the measurement setup.