Partitioning and transmutation strategy R&D for nuclear spent fuel: the SACSESS and GENIORS projects Stéphane Bourg, Andreas Geist, Jean-Marc Adnet, Chris Rhodes and Bruce C. Hanson EPJ Nuclear Sci. Technol., 6 (2020) 35 Published online: 05 May 2020 DOI: 10.1051/epjn/2019009