高斯模式输出窗功率阈值分析  

Power Threshold Analysis of Output Windows in Gaussian Mode

作　　者：高东硕 曾旭[1] 张亦弛[1] 字张雄[1] 郝文腾 李博阳 冯进军[1] GAO Dong-shuo;ZENG Xu;ZHANG Yi-zhi;ZI Zhang-xiong;HAO Wen-teng;LI Bo-yang;FENG Jin-jun(National Key Laboratory of Science and Technology on Vacuum Electronics,Beijing Vacuum Electronics Research Institute,Beijing 100015,China)

机构地区：[1]北京真空电子技术研究所微波电真空器件国家级重点实验室,北京100015

出　　处：《真空电子技术》2024年第5期86-92,共7页Vacuum Electronics

摘　　要：为研究窗片的可承受工作脉宽,分析了不同材料窗片传输170 GHz高斯模式时所能承受的吸收功率阈值。首先确定了不同材料窗片的厚度,然后结合高斯模式分布、介质损耗功率,在相同散热边界条件与几何结构下,对不同材料的输出窗进行稳态热分析。失效判据为陶瓷材料的失效临界温度差与抗热震系数,通过仿真结果确定了窗片所能承受的吸收功率阈值,进而反推出可传输的平均微波功率,其中蓝宝石窗片可传输的平均功率与热测结果基本一致。针对热测老炼样管时提升工作比的需求,当脉冲间隔为10 s时,理论判定不同窗片所能承受的最大脉宽,为老炼样管提供理论支持。若要实现170 GHz、1 MW连续波输出功率,只有金刚石材料满足使用需求。In order to determine the acceptable working pulse width of the window,the absorbed power threshold of the window with different materials is studied when transmitting 170 GHz Gaussian mode.The thickness of the windows with different materials is first determined.Based on Gaussian mode distribution and dielectric loss power,the steady-state thermal analysis of the output windows with different materials is then carried out under the same heat dissipation boundary condition and geometric structure.The failure criterion is the critical temperature difference of the ceramic material and the thermal shock resistance coefficient.The absorbed power absorption threshold that the window can withstand is determined by the simulation results,and then the average microwave power that can be transmitted is deduced.The average power that the sapphire window can transmit is basically consistent with the hot test results.In response to the demand for improving the duty cycle during hot testing of conditioning sample tubes,when the pulse interval is 10 seconds,the maximum pulse width that different windows can withstand is theoretically determined,providing theoretical support for conditioning sample tube.To achieve a 170 GHz,1MW continuous wave output power,only diamond material can meet the needs of use.

关 键 词：回旋振荡管 高斯波束 输出窗 功率阈值 金刚石 

分 类 号：TN12[电子电信—物理电子学]