Gyrotron-based systems for microwave technologies

The recent results of development of technological gyrotron complexes in IAP RAS are presented. Second harmonic 24 GHz CW gyrotron has been developed and tested. Record-breaking efficiency of 60% at 6kW output power has been obtained by optimization of a profile of magnetic field and single-stage energy recovery of the spent electron beam. The electron beam with pitch factor higher than 2 and velocity spread about 10% was experimentally obtained using electron gun of a new type.