The research group of the Applied Physics Department of the University of Alicante has significant expertise in modelling the radiation damage effects in structural materials used for fusion. More precisely, the team gathered existing information about cluster stabilities and mobilities together with the different models for growth of loops in Fe-based alloy under irradiation to better understand the damage caused to the microstructure and optimize future designs. This knowledge in kinetic Monte Carlo and molecular dynamics simulations could be used in other applications where materials are exposed to radiation: fusion and fission reactors, space, healthcare, ion implantation in the semiconductor industry.