4.75 keV能点四通道Kirkpatrick-Baez显微镜

Based on the requirements for time-resolved diagnosis in the compression experiment of a CH cylindrical target, a four-channel Kirkpatrick - Baez (KB) microscope at the 4.75 keV energy point has been developed. The optical design, image quality simulation and analysis of the four-channel KB system have been carried out. The problem of integrated assembly of the four-channel KB objective has been solved by using the method of supporting the cone core, and the installation and adjustment of the KB system in the laboratory have been completed by using the "4.75 keV + 8 keV" dual-energy-point multilayer films. The image quality assessment experiment of this set of system has been successfully carried out on the Shenguang II device, and a high-resolution four-quadrant grid image has been obtained. The imaging spacing meets the design requirements, and the conditions for carrying out time-resolved inertial confinement fusion physical experiments have been met.

基于CH柱形靶压缩实验的时间分幅诊断需求, 研制了4.75 keV能点四通道Kirkpatrick-Baez(KB)显微镜。进行了四通道KB系统的光学设计、像质模拟和分析。采用支撑锥芯的方式解决了四通道KB物镜的集成装配问题, 并通过“4.75 keV+8 keV”双能点多层膜完成了实验室内的KB系统装调。该套系统在神光Ⅱ装置成功进行了像质考核实验, 获得了高分辨的四象限网格图像, 成像间距符合设计要求, 具备了开展时间分幅惯性约束聚变物理实验的条件。