Status and experimental results of the European 1 MW, 170 GHz industrial CW prototype Gyrotron for ITER - Hogge, J-P; Albajar, F.; Alberti, S.; Avramidis, K.; Bin, W.; Bonicelli, T.; Braunmueller, F.; Bruschi, A.; Chelis, J.; Frigot, P. -E.; Gantenbein, G.; Hermann, V; et al. (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, 2016)