FCCee CPES

In cryogen-free HTS magnet systems, the high-current, large-cross-section copper conductors connecting the magnet coils to a power supply outside the cryostat create a thermal leakage path and high conduction losses, which drive up the energy consumption of the cryocoolers. The project develops a cryogenic power supply that delivers power through the cryostat's heat shield at higher voltage — thinner wires, lower heat conduction — by performing the power-electronic conversion to the low-voltage, high-current supply the HTS magnets need inside the cryostat. The aim is a converter with minimum losses, and with it a clearly higher overall energy efficiency.