Gantenbein, G., Samartsev, A., Aiello, G., Dammertz, G., Jelonnek, J., Losert, M., Schlaich, A., Scherer, T. A., Strauss,
D., Thumm, M., & Wagner, D. (2014). First Operation of a Step-frequency Tunable
1-MW Gyrotron with a Diamond Brewster Angle Output Window. IEEE Transactions on Electron Devices,
61(6), 1806-1811. doi:10.1109/TED.2013.2294739.