IFMIF, its facility concept and technology

The historical background and the current status of the high energy, flux neutron irradiation test facility for fusion materials development are described focusing on the recent progress of the International Energy Agency (IEA) conceptual design activity (CDA) on IFMIF. The reference design incorporated the results of the past international collaboration intended to select an optimum source concept, validate relevant technologies and identify requirements for the mission. Throughout the design period, the international design team closely followed the requirements with the guide of an authorized users group. The entire process was promoted by an international steering group based on an assumed material development plan and schedule to be phased with the design and construction of the DEMO reactor. The facility is able to satisfy the requirements for hypothetical test matrices using current candidate materials and includes a flexibility for future upgrading. Options for the next required steps are also discussed. (orig.)