Abstract
The Chinese Fusion Engineering Test Reactor (CFETR) superconducting magnet system was designed by the National Integration Design Group for Magnetic Confinement Fusion Reactor. The CFETR magnet system consists mainly of a central solenoid (CS) coil with six modules, 16 toroidal field (TF) coils, 8 poloidal field (PF) coils, and a set of correction coils (CC). The electromagnetic stresses and stored magnetic energy are huge on the CFETR magnets since they experience both large current densities and high magnetic field. The electromagnetic, structural and thermal performance needs to be evaluated to ensure that the magnetic field, stress, and hot spot temperature of the magnet system are within the allowed criteria.The evaluation of the electromagnetic performance of the CFETR superconducting magnet system under normal operation and fault conditions was performed. The two-dimensional finite element method was adopted to analyse the stress/strain behaviour of the CFETR CS coils. In addition, the thermal–hydraulic behaviour on quench propagation performance of the CFETR CS and TF coils was analysed to evaluate the hot spot temperature of the cable and the helium pressure inside a jacket during a quench.
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