Design Of Modular Remote Controllable Anisotropic Focusing Streak Camera

In such research as ICF (Inertial Confinement Fusion), the main characteristicsof the objects to diagnose are that: small space scale (~100m), fast evolution (~100ps),wide span magnitude of physical quantity (~104), extremely arduous condition (hightemperature~108K, high density~200g/cm3), strong jamming and nonrepeatability.Under these conditions, a number of important features of physical quantities must bemulti-dimension high resolution space-time correlation diagnosed at the same time. Thestreak camera is now playing an important role in it, as a high time resolution recordingdevice.The diagnostic equipment with performance of high temporal and spatialresolution, large dynamic range, intellectualization and remote control is greatly neededfor ICF radiation test research. In this paper, the novel streak tube with both anisotropicfocus electrodes and electric quadrupole lens is proposed, achieving physical temporaldispersion0.38ps and edge spatial resolution56lp/mm. A modular remote controlsystem has been designed to control high voltage supply, environmental monitoring,deflection voltage switch and camera work mode. The Nd:YLF8ps plused laser wasused to calibrate the streak camera and the performance index are: the static anddynamic spatial resolution are35lp/mm and25lp/mm, respectively, the dynamic rangeis more than950:1and time resolution is8ps. Furthermore, the magnifications in slitand scanning direction can be adjusted respectively, when it is coupled with KBmicroscope, which is very convenient to select amplification needed.Compared with the traditional streak tube, its performance(spatial resolution,dynamic range and time resolution) have been greatly improved. However, the limitedperformance index of this streak tube is far from being calibrated. It is necessary toimprove the calibration platform construction further, and then to calibrate the limitedtime resolution of this streak tube. It can be seen from the experiment result that thetime resolution of the streak tube should be about1ps or even higher. What’s more, thefurther calibration of the dynamic range is required to configure large dynamic CCD, low noise image intensifier and the photocathode cooling. According to the test result offoreign similar streak tube, the dynamic range of this streak tube should be at least morethan3700:1. Meanwhile, strengthening research of the photocathode, extending thespectral response range of the streak tube from the ultraviolet, X-ray to visible light andeven infrared, and the streak tube can be used as the core device to develop theengineering and commercialized high performance streak camera.