Pulsed Terahertz High-Harmonic Gyrotrons Based on the Use of Complicated Cavities with Improved Mode Selectivity

We describe our works aimed to development of pulsed 80-100 keV / 0.7-1.2 A third-cyclotron-harmonic 1 THz gyrotron. The main goal of these works in to enhance the power of the output radiation up to the level of several kilowatts in order to utilize this source in special plasma applications. In addition, we consider the possibility to increase the frequency of this gyrotron up to to 1.3 THz using operation at the fourth harmonic of the cyclotron frequency. On the way to these goals, we are going to use complicated cavities with increased mode selectivity.