Thermal-hydraulic simulation of 80 kA safety discharge in the ITER Toroidal Field Model Coil (TFMC) using the 4C code

The Toroidal Field Model Coil (TFMC) was extensively tested in 2001–2002, up to maximum transport current of 80 kA and peak field of ∼ 10 T, in the TOSKA facility at the Karlsruhe Institute of Technology, Germany. Here we apply the 4C code, which was developed for the analysis of thermal-hydraulic transients in superconducting magnets, including winding, structures and cryogenic circuit, to the analysis of the TFMC safety discharge from 80 kA. The code is able to reproduce the main experimental features, within the limitations due to no more fully available information about the details of the cryogenic circuit, which play here a much more important role than at lower currents.