[1] Max Planck Inst Plasma Phys, D-85748 Garching, Germany
[2] ECN Netherlands Energy Res Fdn, Petten, Netherlands
[3] VTT Energy, Helsinki, Finland
[4] Studsvik Eco & Safety AB, SE-61182 Nykoping, Sweden
[5] CIEMAT, E-28040 Madrid, Spain
[6] CEA, EURATOM Assoc, CEPN, Fontenay Aux Roses, France
[7] UKAEA, Culham, England