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| Hauptseite > Publikationsdatenbank > Radiation Damage and Sustainability of Vanadium and Copper Target Under Proton Irradiation Using Monte Carlo Simulation |
| Hauptseite > Publikationsdatenbank > Radiation Damage and Sustainability of Vanadium and Copper Target Under Proton Irradiation Using Monte Carlo Simulation |
| Master Thesis | FZJ-2026-03466 |
2026
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Please use a persistent id in citations: doi:10.34734/FZJ-2026-03466
Abstract: This thesis examines proton-induced radiation damage and sustainability of vanadium and copper-based target materials for High Current Accelerator-driven Neutron Source (HiCANS) applications, especially in the context of the High-Brilliance neutron Source (HBS) project at Forschungszentrum Jülich. Vanadium has been evaluated for 20 MeV proton irradiation target and copper is assessed for 3 MeV proton irradiation target or backing. The general objective is to estimate the amount of primary damage, the rate of damage accumulation and estimate the service life of the respective irradiation conditions.Monte Carlo simulations have been carried out with SRIM/TRIM in full-cascade mode. Three different threshold displacement energy Ed cases were considered for each material; lower case, mean case, and upper case. The red line signifies the most likely estimate of damage Ed, and the lower and upper bounds indicate the range of uncertainty. The outputs from SRIM were translated into damage rates to include target displacement per ion (DPI) and damage distribution by depth (DDD) using NRT-dpa methodology, proton flux, atomic number density and full-power-year operation assumptions.The results indicate that the spatial distribution and intensity of damage from radiation exposure are sensitive to proton energy, material density, proton stopping behaviour and the value of Ed. The proton penetration depth and distributed damage accumulation are deeper for Vanadium under 20 MeV proton irradiation and the annual damage rates have been calculated and used for estimation of service life of the target. Copper under 3 MeV irradiation shows damage concentrated closer to the near-surface region, which is significant for local degradation and replacement considerations. According to the literature, ductility retention and hydrogen compatibility of vanadium and vanadium alloys are relatively good, and copper should be carefully evaluated due to the sensitivity to irradiation hardening/hydrogen degradation and concerns with blistering.Overall, the thesis investigates a methodology for radiation-damage evaluation of targets for accelerator-driven neutron source applications using SRIM/TRIM, for future target design purposes.
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