In the process of being installed at the CEA Paris-Saclay site since July 2017, the colossal magnet weighing 132 tons is now fully operational. To do this, the teams had to meet the many challenges involved in setting up such equipment:Connecting the magnet to auxiliary equipment already installed and tested (cryogenic plant, electrical power supplies, instrumentation and control system);Reaching a stable temperature of 1.8 K: the magnet must be cooled to 1.8 K (- 271°C), at which temperature he...