The Engineering and Projects Department (SI2P, Service d’Ingénierie des Internes et des Projets) is responsible for the development and operation of the tokamak internal components (plasma facing components and heating systems) and their protection.

The Operation Department (STEP, Service Tokamak Exploitation et Pilotage) is responsible for the operation, maintenance and experimentation of the tokamak and the evolution of its core systems.

The Physics Department (SPPF, Service de Physique des Plasmas de Fusion) is responsible for development, operation and testing of diagnostics, plasma modeling including its interaction with the tokamak environment, studies of transport, confinement optimization and plasma stability.

The mastery of nuclear Fusion and the construction of the ITER tokamak will inevitably involve a number of challenges. The WEST tokamak is dealing with one of them already: the divertor.