Investigating on Radioactivity of LBE and Pb in ADS Spallation Target

摘要

Using the Fluka Monte Carlo method, we argue the activity of lead-bismuth eutectic (LBE) and lead (Pb) spallation targets in Accelerator Driven Subcritical System (ADS). Results reveal that the radioactivity of Pb target is lower than that of LBE target when they have the same beam energy and target diameter, the accumulation activity of two target is enhanced as the increase of proton energy and target diameter. In addition, we also discuss the respective contribution of prominent radionuclides of LBE target under various cooling time, it is specified that the used LBE target can be seen as a permanent radioactive waste. For the present works, we expect that it can offer some valuable hints for the future experiment and the assessment of safety hazards of nuclear facilities.