论文部分内容阅读
针对高时空分辨的设计要求,分析影响条纹相机中条纹变像管的物理时间弥散、技术时间弥散和扫描电路触发晃动的因素,优化设计了行波偏转前置磁透镜聚焦的条纹变像管系统.利用CST仿真软件研究了行波偏转器内部的时变电磁场分布,计算了行波偏转器内电磁波的传播速度.结果表明,行波偏转器的指长为8mm、指宽为1mm、指间距为0.24mm、管脚长为2.5mm、板厚为1mm及总长度为17.12mm时,实现了电子团的飞行速度与扫描电脉冲沿行波偏转器的传输速度的匹配.采用电子追迹法和瑞利判据分析了条纹变像管的动态时间和空间特性,得到单次扫描动态时间分辨率为200fs、同步扫描时间分辨率为208fs、动态空间分辨率优于20lp/mm.
Aiming at the design requirements of high temporal and spatial resolution, this paper analyzes the factors that affect the physical time dispersion of stripe tube, the dispersion of technique time and the triggering of scanning circuit in stripe tube, and optimizes the stripe tube system The distribution of time-varying electromagnetic field in traveling wave deflector was studied by CST simulation software, and the propagation velocity of electromagnetic wave in traveling wave deflector was calculated.The results show that the finger length of traveling wave deflector is 8mm, finger width is 1mm, Is 0.24mm, the pin length is 2.5mm, the thickness is 1mm and the total length is 17.12mm, the matching of the flight speed of the electron mass with the transmission speed of the scanning electric pulse along the traveling-wave deflector is achieved.An electronic tracking method And Rayleigh criterion were used to analyze the dynamic time and space characteristics of the striped image tube. The dynamic time resolution of a single scan was 200 fs, the temporal resolution of the synchronous scan was 208 fs, and the dynamic spatial resolution was better than 20 lp / mm.