Abstract
In this paper, the simulation of transverse sweeping system (TFSS) and thermal analysis of undepressed collector for a 94 GHz, 30 kW CW gyrotron are presented. A smooth power-density distribution profile on the collector is obtained through repeated comparison of the TFSS simulation results, which indicates the range of spent beam spread and the peak power density are about 370 mm and 130 W/cm2, respectively. The sensitivities of the TFSS’s parameters to the power distribution profile are also studied and analyzed. To avoid the melting of the collector, a cooling channel groove is designed and the thermal analysis with finite element software ANSYS is performed under the non-uniform heat flux. The maximum outer and inner surface temperatures are 94.3 and 102.4 °C with water temperature at 20 °C, respectively.
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