Abstract

In order to develop the high-power millimeter wave (MMW) source in high frequency, the design of 220 GHz high-power MMW source is investigated. The source is achieved by Cerenkov device. The impact of the slow-wave structure (SWS) on the resonant frequency is analyzed especially and then the SWS design is optimized. The particle-in-cell (PIC) simulation results show that the optimum structure can work stably and generate a millimeter wave signal with the condition of the electron beam with the voltage of 320kV, the current of 2000A and the guiding magnetic field of 3T. Its resonant frequency is about 220GHz, the pulse width is between 2.5 ns and 3.5 ns and the radiation power reaches the level of 45MW. The research is expected to be helpful in the development of the 220GHz source.

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