宽量程高时间分辨扫描变像管
Streak image tube with wide sweep range and high temporal resolution
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摘要: 为改善大偏转角度的偏转像质，设计了一种高时间分辨、大扫描长度的扫描变像管电子光学和行波偏转系统。对变像管后加速技术进行了实验研究，结合图像外增强技术，解决了大面积扫描图像的探测灵敏度问题，达到了同时扩展扫描变像管的时间量程和提高时间分辨力的目的，研制出了宽时间量程、高时间分辨力的扫描变像管。初步实验表明，在量程为5 ns时，时间分辨力达到5 ps，也就是时间分辨力与时间量程之比达到1/1 000。Abstract: Some efforts have been made on developing an optical streak image tube: creating a unique electro-optics configuration of streak image tube with large sweep range and high temporal resolution, designing a proper travelling-wave deflection system to improve the deflecting image quality at large deflection angle, and combining the post-acceleration and external image intensifying technique to solve the limitation on detection sensitivity in large streaking area. Preliminary experiments show that the image tube’s temporal resolution is 5 ps within 5 ns sweep range, i.e. the ratio of temporal resolution to time range reaches 1/1 000.
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