“…One more 170 GHz ITER gyrotron was delivered for EU team for testing of the microwave components. All of them satisfied ITER requirements, including efficiency more than 50% with energy recovery system, 100% power modulation with frequency up to 5 kHz [3], [4]. At present the main purpose of the system modification is an enhancement of the system reliability and implementation of all gyrotron systems into ITER machine and its control and safety system.…”