EU fuel cycle development priorities for ITER

The paper describes the key elements of the EU fuel cycle development for ITER. The programme is now closely focused on the systems allocated to the EU for in-kind supply. These include the isotope separation and water detritiation systems (ISS and WDS) and the cryopumps for torus exhaust, neutral beam injectors (NBI) and cryostat pumping. For all of these systems, which must be available for (or even before) first plasma operation, prototypes at ITER-relevant scale are under design and construction and the concepts, critical issues, experimental programmes and status of these development projects are outlined in the paper.