PT Unknown AU Bonicelli, T Alberti, S Cirant, S Dormicchi, O Fasel, D Hogge, JP Illy, S Lievin, C Mondino, PL Piosczyk, B Rzesnicki, T Santinelli, M Taddia, G Thumm, M Tran, MQ TI EC power sources: European technological developments towards ITER PY 2006 LA english ER