Proton beam irradiation program at PSI

Saito, Shigeru   

Beam window and structural materials for spallation neutron source and ADS are damaged by irradiation with high energy protons and spallation neutrons. In order to clarify the radiation damage characteristics of materials under spallation conditions, irradiation programs such as STIP (SINQ Target Irradiation Program) and MEGAPIE (MEGAwatt Pilot Experiment) are centered on the Swiss Paul Scherrer Institute (PSI) in Switzerland. In these programs, various materials have been irradiated with 580 MeV protons at PSI accelerator, and the participating countries share the PIE. JAEA also transported some of the irradiated samples and conducted PIE. In this presentation, we will introduce the characteristics of the spallation environment, the outline of these material irradiation programs, and the typical results and knowledge obtained by PIE.