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回旋管收集极是高功率回旋管,尤其是连续波回旋管的重要组成部件。本文针对W波段连续波回旋振荡管,根据电磁场理论并利用粒子模拟仿真软件设计了一套横向场扫描散焦系统(TFSS),在TFSS的作用下,电子注在收集极内表面的电子注功率密度分布比较均匀,且收集极单位面积上的电子负荷较低,电子注功率密度≤130 W/cm2;分析了TFSS设计参数(TFSS轴向位置和磁场线包的工作电流)的变化对收集极壁上电子注功率密度的影响;利用有限元软件ANSYS并结合粒子模拟仿真软件获得了收集极壁上的电子注载荷,对收集极进行了不同热流密度加载方式下的热分析,结果表明收集极在非均匀热流密度加载方式下的内外表面温度比在均匀热流密度加载下的内外表面温度高约20℃;根据热分析结果,所设计的水冷系统相关参数可以满足回旋管制管的工程要求。
The gyro collector is an important component of a high power gyrotron, especially a continuous wave gyrotron. In this paper, a set of horizontal field scanning defocusing system (TFSS) is designed according to the theory of electromagnetic field and particle simulation software, and the electronic injection power of the electron injection on the inner surface of the collector under the action of TFSS The density distribution is relatively uniform and the electron load on the collector unit area is relatively low. The electron injection power density is less than or equal to 130 W / cm2. The variation of the TFSS design parameters (the axial position of the TFSS and the operating current of the magnetic field line package) Wall electron injection power density effect; the use of finite element software ANSYS combined with particle simulation software to obtain the collection pole wall electron injection load, the collector was subjected to different heat flux density loading mode of thermal analysis, the results show that the collector The internal and external surface temperatures under non-uniform heat flux loading are about 20 ℃ higher than the internal and external surface temperatures under uniform heat flux loading. According to the thermal analysis results, the designed parameters of the water cooling system can meet the engineering requirements of the gyrotron.