神光Ⅲ主机装置X光静态成像系统研制

Design and development of a static X-ray imaging system used on SG-Ⅲ laser facility

针对神光Ⅲ主机装置的靶室结构和打靶方式要求,基于针孔成像原理,成功研制出应用于神光Ⅲ主机装置的X光静态成像系统。该系统采用模拟靶组件进行离线瞄准,并可进行在线轴向和指向调节,调节精度分别为81μm、40μm。针孔组件和滤片组件的自动更换使系统实现了真空环境下的在线快速切换和运行。同时使用有限元软件ANSYS对系统的变形与应力进行模拟分析以保证系统的可靠性。系统搭载X光CCD在神光Ⅲ主机装置上进行激光打靶考核,实验结果表明,该系统达到神光Ⅲ主机装置使用要求。

According to the target chamber structure and shooting mode of laser facility, a static X ray imaging sys tem （SXI） has been successfully developed based on the principle of pinhole imaging. This system uses the imitated target for offline targeting, and can be adjusted online, with the regulation accuracy of The pinhole component and fil ter component can be changed automatically, which realizes fast online aiming and running in vacuum environment. The displace ment and stress were calculated using the software ANSYS to ensure the reliability of this system. Laser targeting evaluation of the system equipped with Xray CCD has been conducted on SGII laser facility. The result shows that the system reaches the re quirement of the SOUI laser facility.