An equation for the quench propagation velocity valid for high field magnet use of REBCO coated conductors

Abstract

Based on a study of the thermophysical properties, we derived a practical formula for the normal zone propagation velocity appropriate for REBa${}_2$Cu${}_3$O${}_{7-x}$ coated conductors in high magnetic fields. An analytical expression to evaluate the current sharing temperature as a function of the operating conditions is also proposed. The presented study has allowed us to account for experimental results not fully understood in the framework of the models widely used in the literature. In particular, we provided a fundamental understanding of the experimental evidence that the normal zone propagation velocity in REBa${}_2$Cu${}_3$O${}_{7-x}$ coated conductors can be mainly determined by the operating current, regardless of the applied field and temperature.

References in corpus (3)

• Field and temperature scaling of the critical current density in commercial REBCO coated conductors
• High-field thermal transport properties of REBCO coated conductors
• Transverse Thermal Conductivity of REBCO Coated Conductors

Cited by in corpus (2)

• AMS-100: The Next Generation Magnetic Spectrometer in Space -- An International Science Platform for Physics and Astrophysics at Lagrange Point 2
• Screening current effect on the stress and strain distribution in REBCO high-field magnets: experimental verification and numerical analysis