[1] Fus Energy, Barcelona 08019, Spain
[2] Euratom ENEA Assoc, Consorzio RFX, I-35126 Padua, Italy
[3] IRFM SCCP, CEA Cadarache, EURATOM Assoc, F-13108 St Paul Les Durance, France
[4] EURATOM, Forschungszentrum Karlsruhe, D-76021 Karlsruhe, Germany
[5] EURATOM, Max Planck Inst Plasmaphys, D-85740 Garching, Germany
[6] CEA Cadarache, ITER Joint Work Site, F-13108 St Paul Les Durance, France
[7] Assoc EURATOM CIEMAT, Madrid 28040, Spain
[8] Culham Sci Ctr, UKAEA Fus Assoc, Abingdon OX14 3DB, Oxon, England