Theoretical and Experimental Research on Spatial Performances of the Long-slit Streak Tube

Measurement Science Review

Li Lili¹  Chen Ping¹  Zhao Wei¹  Xue Yanhua¹  Tian Jinshou¹  Chen Lin²  Tian Liping²  Shen Lingbin² 

[1] Key Laboratory of of Transient Optics and Photonics, Key Laboratory of Ultra-fast Photoelectric Diagnostics Technology, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xinxi Road, No.17, Xi’an, 710119, China;School of network and communication engineering, Jinling Institute of Technology, Hongjing Road, No.99, Nanjing, 211169, China;

关键词: ultrafast detector;    streak tube;    imaging;    spatial resolution;    temporal resolution;   

DOI  :  10.2478/msr-2022-0007

来源: DOAJ

【 摘 要 】

The streak tubes are widely used in National Ignition Facility (NIF), Inertial Confinement Fusion (ICF), and streak tube imaging lidar (STIL) as radiation or imaging detectors. The spatial resolution and effective photocathode area of the streak tube are strongly dependent on its operating and geometry parameters (electron optical structure and applied voltage). Studies about this dependence do not cover the full range of the parameters. In this paper, 3-D models are developed in Computer Simulation Technology Particle Studio (CST-PS) to comprehensively calculate the spatial resolution for various parameters. Monte Carlo Sampling method (M-C method) and spatial modulation transfer function method (SMTF) are employed in our simulation. Simulated results of the optimized spatial resolution are validated by the experimental data. Finally, the radii of the photocathode (Rc) and phosphor screen (Rs) are optimized. Geometry parameters of Rc=60 mm and Rs=80 mm are proposed to optimize the streak tube performances. Simulation and experimental results show that the spatial resolution and effective photocathode area of this streak tube are expected to reach 16 lp/mm and 30 mm-length while the voltage between cathode and grid (Ucg) is 150 V.

【 授权许可】

Unknown