Collection of radiation irradiation study reports for the candidate materials and instruments in the J-PARC

Kusano, Joichi

This document presents the collected reports of radiation irradiation study for the candidate materials and instruments to be used in the High Intensity Proton Accelerator Facility, J-PARC. The examinations were executed at the -ray irradiation facility in JAEA Takasaki Institute. The effect of radiation damage by loss-beam or secondary particle beam of the accelerators influences the performance and the reliability of various instruments. The knowledge on the radiation resistivity of the materials is important to estimate the life of the equipments, the maintenance interval and dose evaluation for the personnel at the maintenance period. The radiation damage consists with mechanical property, electrical property and gas-evolution property. This report shows the subject of the instruments or the materials in the J-PARC facility, the theme of the irradiation study, the results of examination and the selected decision of the policy for usage.