Use of MeV Ion Beams to Simulate the Irradiation Effects in Advanced Materials at JANNUS Saclay

The JANNUS Saclay facility results from the coupling of three accelerators: a 3-MV Pelletron “Épiméthée,” a 2-MV Pelletron Tandem “Japet,” and a HVE 2.5-MV Van de Graaff “Yvette.” In the first part of this paper, the general layout of the facility will be described and its irradiation capabilities presented and discussed. Then, the rules established to give at JANNUS the status of open-access facility to perform irradiation experiments will be explained. Some examples of the irradiations carried out at JANNUS Saclay, for the last 2 years, to simulate the effects of irradiation in advanced materials by using MeV ion beams will be detailed in the third part of this paper. These experiments principally concern ferritic alloys, optical data storage (ODS) alloys, and semiconductors. To conclude, we will discuss the main instrumental and characterization developments that have been planned for the next five years.