由Ka波段过模切伦科夫型高功率毫米波发生器产生的千兆瓦级辐射。

Gigawatt-class radiation generated by a Ka-band overmoded Cherenkov-type high power millimeter wave generator.

作者信息

Wu Dapeng, Shu Ting, Ju Jinchuan, Peng Shengren

机构信息

College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha 410073, China.

出版信息

Rev Sci Instrum. 2015 Aug;86(8):084706. doi: 10.1063/1.4929869.

DOI:10.1063/1.4929869

PMID:26329220

Abstract

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.

摘要

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。