PNNL

Abstract

Prediction of material performance in fusion reactor environments relies on com- putational modeling, and will continue to do so until the first generation of fusion power plants come on line and allow long-term behaviour to be measured un- ambiguously. In 2019, a group of leading experts met under the umbrella of the IEA to discuss the current position and future challenges in modeling of fusion materials. This paper summarizes the discussions. Topics covering modeling of irradiation-induced defect production, gas behavior, defect evolution and interactions are discussed, as well as new and novel multiscale approaches and the latest efforts to link modeling to experiments.