Prediction of material performance in fusion reactor environments relies on computational
modelling, and will continue to do so until the first generation of fusion power plants come on line and allow long-term behaviour to be observed.
In the meantime, the modelling is supported by experiments that attempt to
replicate some aspects of the eventual operational conditions. In 2019, a group
of leading experts met under the umbrella of the IEA to discuss the current position
and ongoing challenges in modelling of fusion materials and how advanced
experimental characterisation is aiding model improvement. This review draws
from the discussions held during that workshop.
Topics covering modelling of irradiation-induced defect production and fundamental
properties, gas behaviour, clustering and segregation, defect evolution
and interactions are discussed, as well as new and novel multiscale simulation
approaches, and the latest efforts to link modelling to experiments through advanced
observation and characterisation techniques.