0.14 THz低电压扩展互作用速调管慢波谐振系统的研究  

Design of Resonant Cavity of 0.14 THz Low-Voltage Extended Interaction Klystron

作　　者：朱勇杰[1] 蒙林[1] 殷勇[1] 王彬[1] 李海龙[1] 苏朕[1] 冯林平[1] 常志伟[1] 聂涛[1] 

机构地区：[1]电子科技大学物理电子学院,成都610054

出　　处：《真空科学与技术学报》2015年第3期344-348,共5页Chinese Journal of Vacuum Science and Technology

基　　金：国家自然科学基金项目(No.61201011);中央高校基础研究基金项目(No.ZYGX2013J056)

摘　　要：设计了一个在高效率、高频率、结构紧凑低磁场以及低电压工作等方面具有独特优势的0.14 THz扩展互作用速调管慢波谐振系统。针对该慢波谐振系统进行了色散曲线的仿真计算,在色散曲线与PIC仿真的基础上,对模式竞争进行了分析,选取了3π模为工作模式,并给予了论证。PIC仿真结果表明在较低工作电压18.2 k V,工作电流0.5 A的条件下,该谐振系统的注波互作用效率可达到22%,工作模式为3π模,输出峰值功率可达4.03 k W,工作频率为149.419 GHz。A novel type of the resonant cavity of the 0.14 THz extended interaction klystron （EIK） was designed with many technical advantages, including but not limited to the high efficiency, more compact structure, high operating frequency, low voltage and low magnetic field. The dispersion of the newly-developed resonance cavity was approximated, modeled and analyzed. Moreover, the mode competition, with 37t-mode as the operation mode because of future design con- siderations, was simulated with software PIC and on the basis of the calculated dispersion curve. The simulated results show that the newly-designed resonant system does an excellent job. For example, the beamwave interaction efficiency was found to be. close to 22% ;and the peak microwave output power was estimated to be 4.03 W, working in 37t-mode under the conditions：at a frequency of 149.19 GHz,a voltage of 18.2 kV and a current of 0.5 A,in an external magnetic field of 0.7 T.

关 键 词：谐振系统 速调管 扩展互作用 色散曲线 模式 

分 类 号：TN122[电子电信—物理电子学]