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Simulation of Transverse Field Sweeping System with Different Modulation Waves for MW-class Gyrotron

The transverse field sweeping system is capable of spreading electron deposited areas and reducing peak power density efficiently. In order to obtain lower peak power density further, the means of modulation wave has been employed. The effect of different modulation waves have been investigated using CST code in this paper. The simulated results indicate the triangular wave has the best performance among rectangular wave, triangular wave and cosine wave. Finally, the optimal peak power density 106.2 W/cm2 has been obtained.