同步扫描管时空分辨特性研究(英文)  

Spatio-temporal Resolution Studies on a Synchronous Streak Tube

作　　者：田丽萍 沈令斌 陈琳 李立立 陈萍[2] 田进寿[2] TIAN Liping;SHEN Lingbin;CHEN Lin;LI Lili;CHEN Ping;TIAN Jinshou(School of Network and Communication Engineering,Jinling Institute of Technology,Nanjing 211169,China;Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology,State Key Laboratory of Transient Optics and Photonics,Xi’an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi’an 710119,China)

机构地区：[1]金陵科技学院网络与通信工程学院,南京211169 [2]中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,超快诊断技术重点实验室,西安710119

出　　处：《光子学报》2021年第4期143-152,共10页Acta Photonica Sinica

基　　金：Ph.D.Project Supported by the Jinling Institute of Technology(Nos.jit-b-202012,jit-b-201814);the Natural Science Foundation of Jiangsu Province,China(No.BK20190112);the National Natural Science Fund(No.12005083);the Scientific Instrument Developing Project of the Chinese Academy of Sciences(No.GJJSTD20190004)。

摘　　要：设计了一种具有高空间分辨率、高时间分辨率和大工作面积的同步扫描条纹管.建立三维模型,系统地分析了物理时间分辨率与加速电压、空间分辨率与偏转系统-光电阴极的距离、动态空间分辨率和时间分辨率与扫描速度的关系.给出最优化结构参数和电气参数:d_(DC)=100 mm,U_(g)=700 V,T_(screen)=0.5 ns.数值模拟结果表明,在光电阴极有效工作面积18 mm×2 mm范围内,静态和动态空间分辨率分别高于25 lp/mm@MTF=10%和16 lp/mm@MTF=10%.在T_(screen)=0.5 ns时,同步条纹管的时间分辨率优于5.6 ps.此外,实验测试得到在400 nm波长处,光电阴极的辐射灵敏度为51 mA/W,光电阴极有效面积内的静态空间分辨率高于25 lp/mm@CTF=13%.A synchronous streak tube capable of providing high spatial resolution,high temporal resolution and large working area is numerically designed and experimentally demonstrated.In this paper,a 3-D model developed to systematically and comprehensively analyze the dependence of the physical temporal resolution on the accelerating voltage,the spatial resolution on the deflector-to-cathode distance,the dynamic spatial resolution and temporal resolution on the scanning velocity.Finally,geometry and electric parameters of d_(DC)=100 mm,U_(g)=700 V,and T_(screen)=0.5 ns are proposed to optimize the streak tube performances.The numerical simulations show that the static spatial resolution is higher than 25 lp/mm@MTF=10%and the dynamic spatial resolution is higher than 16 lp/mm@MTF=10%over the whole effective photocathode area of 18 mm×2 mm.And,the simulated temporal resolution is better than 5.6 ps at Tscreen=0.5 ns.Furthermore,the photocathode radiant sensitivity can reach 51 mA/W at the wavelength of 400 nm.The tested static spatial resolution is as high as 25 lp/mm@CTF=13%.

关 键 词：同步条纹管 物理时间分辨率 空间分辨率 阴极有效面积 全屏时间 阴极灵敏度 调制传递函数 

分 类 号：O463[机械工程—光学工程]