Wu Dapeng, Shu Ting, Ju Jinchuan, Peng Shengren
College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha 410073, China.
Rev Sci Instrum. 2015 Aug;86(8):084706. doi: 10.1063/1.4929869.
Particle simulation and experimental results are presented about a Ka-band overmoded Cherenkov-type high power millimeter wave generator in this paper. The relativistic electron beam with peak current of 8.4 kA was generated by a pulsed power accelerator working at the voltage of 625 kV, which was guided by an axial magnetic field of 1.05 T and transported through the beam-wave interaction structures. After careful calibration, the microwave power radiated in the far field was as high as about 500 MW, with a frequency of 32.1 GHz and a pulse width of 20 ns. The radiation mode was well controlled to be TM(0n) mode.
本文给出了关于一个Ka波段过模切伦科夫型高功率毫米波发生器的粒子模拟和实验结果。峰值电流为8.4 kA的相对论电子束由一台工作电压为625 kV的脉冲功率加速器产生，该电子束由1.05 T的轴向磁场引导，并通过束波相互作用结构传输。经过仔细校准，远场辐射的微波功率高达约500 MW，频率为32.1 GHz，脉冲宽度为20 ns。辐射模式被很好地控制为TM(0n)模式。
