强激光与粒子束2026，Vol.38Issue(4)：28-32,5.DOI:10.11884/HPLPB202638.250303
星光-Ⅲ激光装置X射线在线瞄准针孔相机研制
Development of X-ray online-aiming pinhole camera for Xingguang-Ⅲ laser facility
摘要
Abstract
[Background]Pinhole cameras based on the principle of pinhole imaging are widely used in high-energy-density physics experiments to monitor laser-target interaction regions.However,traditional pinhole cameras often suffer from signal acquisition failures due to the lack of online aiming capability,especially for small targets such as wire targets in facilities like the Xingguang-Ⅲ laser system.[Purpose]This study aims to develop an X-ray online-aiming pinhole camera for the Xingguang-Ⅲ laser facility to address the challenge of precise target alignment under vacuum conditions and enhance the reliability of signal acquisition.[Methods]An integrated design combining a visible-light CCD and an X-ray CCD was implemented.A revolver-type pinhole adjustment device was developed to switch between aiming apertures and imaging pinholes with a concentricity error below 3.5 µm.High-precision two-dimensional pointing adjustments(pitch and tilt)were achieved using a motorized stage,with a targeting accuracy of 15 µm.The visible-light CCD enabled real-time target imaging,while different aperture sizes on a precision adjustment disk facilitated coarse-to-fine aiming.[Results]The camera was tested on the Xingguang-Ⅲ laser facility using a Cu planar target irradiated by a picosecond laser.Clear X-ray spot images were obtained,with a peak intensity of 52 040 and a background noise of approximately 2 500.The full width at half maximum of the spot was 43 µm horizontally and 38 µm vertically,confirming successful online aiming and imaging performance.[Conclusions]The developed X-ray online-aiming pinhole camera fulfills the operational requirements of the Xingguang-Ⅲ laser facility.It enables real-time,high-precision target alignment under vacuum,significantly improving the success rate of signal acquisition in high-energy-density physics experiments.关键词
针孔相机/在线瞄准/X射线焦斑/星光-Ⅲ激光装置Key words
pinhole camera/online-aiming/X-ray focal spot/Xingguang-Ⅲ laser facility分类
数理科学引用本文复制引用
杨雷,黄征,孙立,卢峰,陈勇,李纲,周凯南..星光-Ⅲ激光装置X射线在线瞄准针孔相机研制[J].强激光与粒子束,2026,38(4):28-32,5.基金项目
等离子体物理全国重点实验室基金项目(6142A04240302) （6142A04240302）
