一种大功率脉冲磁控管的模式、频谱与可靠性研究  

Problems and Solutions of Self-Developed S-Band High Power Pulsed Magnetron

作　　者：李彦宾[1] Li Yanbin(Beijing Vacuum Electronic Research Institute,Beijing 100015,China)

机构地区：[1]北京真空电子技术研究所

出　　处：《真空科学与技术学报》2019年第8期714-717,共4页Chinese Journal of Vacuum Science and Technology

摘　　要：研究一种用于粒子加速器的S波段2.6 MW大功率脉冲磁控管,该磁控管在研制过程中存在起振不稳定、主副瓣比小、干扰模抑制不足、脉内/脉间跳模、打火频率高、寿命短等问题。通过理论研究、仿真分析、实测验证等对具体问题进行分析研究,制订了这些问题的解决方案,文中详细描述了问题的分析研究过程、解决方案的思路、具体的技术措施和每一项措施的目标,最终课题组通过制管实验对解决方案进行验证,试验证明所采用的技术方案解决了这些问题,使磁控管的模式、频谱、可靠性等满足了研究目标。We addressed the mechanisms responsible for the major problems,including but not limited to the instable oscillation-starting,low mainlobe-to-sidelobe ratio,ineffective suppression of interference,intra-pulse and inter-pulse frequency-shifting,frequent sparks and short service life-time,of the lab-developed S-band high power pulsed magnetron,operating at 2.6 MW and to be used in particle accelerator.The influence of the modified structures,improved fabrication techniques and optimized operation conditions on the characteristics of the magnetron was theoretically analyzed,numerically simulated and experimentally evaluated.The prototyped magnetron,fabricated on the basis of optimization of design/fabrication/operation-conditions,was tested.The results show that the total solutions we proposed here work pretty well.For instance,when it comes to frequency spectrum and reliability,the newly-designed magnetron meets the application requirements.

关 键 词：大功率脉冲磁控管 频谱 可靠性 寿命 

分 类 号：TN123[电子电信—物理电子学]