From Series Production of Gyrotrons for W7-X Toward EU-1 MW Gyrotrons for ITER - Jelonnek, John; Albajar, Ferran; Alberti, Stefano; Avramidis, Konstantinos; Benin, Patrick; Bonicelli, Tullio; Cismondi, Fabio; Erckmann, Volker; Gantenbein, Gerd; Hesch, Klaus; Hogge, Jean-Philippe; Illy, Stefan; et al. (IEEE Transactions on Plasma Science, 2014)