Design and manufacturing process for the KIT 2-MW 170-GHz coaxial-cavity longer-pulse gyrotronS. Ruess, G. Gantenbein, A. Heinzel, S. Illy, I. Gr. Pagonakis, T. Rzesnicki, M. Thumm, J. Weggen, A. Weisenburger and J. JelonnekEPJ Web Conf., 149 (2017) 04015DOI: https://doi.org/10.1051/epjconf/201714904015