Overview of the JET ITER-like Wall Project

This paper presents an overview of the R&D activities for the ITER-like Wall (ILW) Project in JET which has been launched in 2005 and will be completed early 2011. A full replacement of the first wall materials in JET will be done to a ITER like wall composition with Be in the main chamber and W in the divertor as foreseen for the second activated phase in ITER. The project is directed to deliver answers to urgent questions on plasma surface interactions such as tritium retention and Be–W behaviour and to provide in general operational experience in steady state and transient conditions with ITER wall materials under relevant geometry and relevant plasma parameters.