Advanced Developments for Gyrotrons Considering Designs, Tools and Test Facilities at KIT

Latest research and development on advanced gyrotron developments for Electron Cyclotron Resonance Heating (ECRH) and plasma control performed at Karlsruhe Institute of Technology (KIT) is presented. The status on the development of coaxial cavity gyrotrons for the future demonstration power plant (DEMO), on advanced gyrotron operation, key components, simulation tools and test facilities is reported. Finally, the upstarting research on future megawatt-class gyrotrons operating at the second harmonic of the electron cyclotron resonance frequency is discussed.