Experiment and Simulation for Normal Zone Propagation Insert Set-up for YBCO Superconducting Tape Cooled by Liquid Helium on Quasi-Adiabatic Condition

Quench protection is used to ensure the safety of superconducting magnets. Only by understanding the quench characteristics of superconducting materials profoundly can we take reasonable protective measures to avoid the damage of magnets caused by local normal zone propagation. An experimental insert set-up has been developed and preliminary tested at the Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP). Measurements are performed as a function of normalized current ratio and magnetic field for several operating temperatures between 20 K and 50 K. This paper focuses on the measurement of experimental data and the fitting comparison of a simplified adiabatic models about normal zone propagation velocity (NZPV) and minimum quench energy (MQE). These studies provide necessary theoretical guidance for the thermal stability of superconducting materials.