170 GHz兆瓦级回旋振荡管设计研究  

Design and Study of 170 GHz Gyrotron with MW Power

作　　者：雷朝军 刘迎辉[2] 张双狮 蒙林[2] 李宏福[2] LEI Chao-jun;LIU Ying-hui;ZHANG Shuang-shi;MENG Lin;LI Hong-fu(China People’s Police University Langfang Hebei 065000;Terahertz Science and Technology Research Center,School of Electronic Science and Engineering University of Electronics Science and Technology of China Chengdu 610054)

机构地区：[1]中国人民警察大学,河北廊坊065000 [2]电子科技大学电子科学与工程学院太赫兹科学技术研究中心,成都610054

出　　处：《电子科技大学学报》2018年第6期847-852,共6页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(61571078);中国博士后基金(2015M 572458)

摘　　要：该文基于广义传输线理论和电子回旋脉塞理论,考察模式谱、深入研究注-波耦合系数和不同模式的起振电流,选择TE32,12模式为170GHz兆瓦级回旋振荡管的工作模式。通过合理调整电子注工作参数有效抑制高次模谐振腔中的暂态模式,优化谐振腔的光滑缓变段来抑制寄生振荡模式。当电子注的横、纵速度比为1.3,引导中心半径为9.4 mm,电压为80 kV,电流为45 A,互作用磁场约为6.715 T时,该只优化设计的回旋振荡管在170.18 GHz频点输出功率超过1.8 MW,效率约为50%。此外,建立切合实际的电子注速度零散模型,讨论了速度零散对该只管子的性能影响。Based on the theories of generalized transmission line and electron cyclotron resonance maser,the TE32,12 mode is selected as the operating mode of a 170 GHz megawatt gyrotron by investigating the mode spectrum and studying the beam-wave coupling coefficient and the start-current of the modes carefully.Through appropriately arranging the parameters of the beam,the transient modes in the high order mode resonator are suppressed effectively.And through designing the gradual sections of a kind of taped cavity,the parasitic modes are suppressed furthest.As a result,an output power of 1.8 MW,corresponding to 50%efficiency,and an oscillation frequency of 170.18 GHz have been achieved with a pitch factor 1.3,radius of guiding center 9.4mm,80 kV,45A helical electron beam at a guiding magnetic field of 6.715T.At the same time,we have also set up a velocity-spread model suitable to actual circumstances and discussed the performance impact to the gyrotron.

关 键 词：效率 回旋振荡管 模式竞争 起振电流 

分 类 号：TN129[电子电信—物理电子学]