A versatile multi-objective FLUKA optimization using Genetic Algorithms Vasilis Vlachoudis, Guido Arnau Antoniucci, Serge Mathot, Wioletta Sandra Kozlowska and Maurizio Vretenar EPJ Web Conf., 153 (2017) 06004 Published online: 25 September 2017 DOI: 10.1051/epjconf/201715306004