Irfu designs, builds, tests and operates large superconducting magnets for research
. These magnets are a critical technology for nuclear and particle physics accelerators and detectors, such as the Atlas torus and the CMS solenoid in the LHC or the Glad dipole in GSI/Fair. The specifications imposed by the scientific objectives lead to large size, high magnetic fields and specific magnetic configurations. To remain at the highest international level and exploit the particle physics know-how developed in particle physics, Irfu extends its actions to MRI and to fusion, through the Iseult, W7-X and JT-60SA projects. All of these tasks incorporate cryogenics, mechanics, superconductivity and protection of the magnets.