各向异性聚焦大动态条纹变像管  

High Dynamic Range Anisotropic Focusing Streak Tube

作　　者：赵廷靖 惠丹丹[2,3] 田进寿 卢裕[2] 刘百玉[2] 温文龙[2] 缑永胜[2] 陈震[2] ZHAO Ting-jing;HUI Dan-dan;TIAN Jin-shou;LU Yu;LIU Bai-yu;WEN Wen-long;GOU Yong-sheng;CHEN Zhen(Electrical Engineering College,Longdong University,Qingyang,Gansu 745000,China;Key Laboratory of Ultrafast Photoelectric Diagnostics Technology,Xi′an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi′an 710119,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]陇东学院电气工程学院,甘肃庆阳745000 [2]中国科学院西安光学精密机械研究所中国科学院超快诊断技术创新重点实验室,西安710119 [3]中国科学院大学,北京100049

出　　处：《光子学报》2018年第12期65-72,共8页Acta Photonica Sinica

基　　金：国家重大科研装备项目(No.2011CB00000);国家自然科学基金(Nos.50875132;60573172);国家高技术研究发展计划(No.2011~2015AA8041018)资助~~

摘　　要：建立了各向异性聚焦大动态条纹变像管电子光学模型,通过求解整个系统的电场分布对可能的高压打火点进行了分析,研究了电四极透镜对条纹管放大倍率以及静态和动态像质的影响,并计算了该管型的时间畸变.结果表明,在20mm长狭缝的情况下,时间畸变为15ps,在这15ps内,偏转器所施加的扫描电压的变化范围仅为3.06V,因此由时间畸变导致狭缝像弯曲的现象几乎可以忽略.实验测试得该条纹相机的时间分辨可达1.8ps,在时间分辨为8ps时,动态范围超过1 000∶1.The electron-optical model of high dynamic range anisotropic focusing streak tube is built.Via calculating the electric field distribution and tracking electron beam trajectory of the whole system,high voltage electrodes which may trigger the electric sparks are analyzed;the effect of electric quadrupole lens on the streak tube magnification,static and dynamic image quality are studied;the temporal distortion is calculated.The results show that the temporal distortion in the 20 mm long slit is only 15 ps,in which the variation of the ramp voltage imposed on the deflectors is as small as 3.06 V.Thus,the slit image distortion caused by the temporal distortion can be ignored.The optimum time resolution of 1.8 ps and dynamic range of 1 000∶1 at temporal resolution of 8 ps are successfully demonstrated in the experiments.

关 键 词：条纹相机 数值计算 动态范围 狭缝像 时间畸变 电四极透镜 

分 类 号：TB872[一般工业技术—摄影技术] TL65[核科学技术—核技术及应用]