Modeling of Quench in a Slotted Core HTS Cable for Compact Fusion Reactors

In this work, a 3D FEM electro-thermal model of a slotted core HTS cable, developed at the ENEA Frascati Superconductivity Laboratory (Italy) in collaboration with the University of Bologna (Italy) and Eni S.p.A. (Italy), is presented. A benchmark of the model with experimental tests is provided, showing the temporal evolution of voltages and temperatures (monitored through fibre optic sensors) during quench. The model is also applied to compute the normal zone propagation velocity. The analysis finally provides critical information for the design of a quench protection system based on fiber optics.