Benchmark study of induced radioactivity at a high energy electron accelerator, Part I: Specific activities.

Several samples of different metallic materials as well as water were exposed to the stray radiation field generated by the impact of a 28.5 GeV electron beam on a copper target. The irradiation experiment included measurements of specific activities and residual dose rates. This paper focuses on the specific activities which were measured at different cooling times of up to several months. The results were compared with the prediction from the Monte-Carlo particle transport code FLUKA. The benchmark included also a detailed identification of interaction processes creating the different radionuclides. This work is a continuation of the results reported in [1] and addresses a larger variety of materials.