1. Former Member of the JET Joint Undertaking
2. Euratom/UKAEA Fusion Association Culham Science Centre, Abingdon, Oxon OX14 3DB, United Kingdom
3. Association Euratom-CEA CEA/DSM/DRFC Centre de Cadarache, 13108 St Paul lez Durance, France
4. Max-Planck-Institut für Plasmaphysik, Euratom-Association IPP, D-85740 Garching, Germany