神光Ⅱ升级装置纳秒靶瞄准定位技术研究  

Research on the System of the Nanosecond Target Aiming and Positioning of the SG-Ⅱ Updated Laser Facility

作　　者：周洋[1] 邵平[1] 赵东峰[1] 居玲洁[1] 任磊[1] 章亚男[2] 华能[1] 朱健强[1] 林尊琪[1] 

机构地区：[1]中国科学院上海光学精密机械研究所高功率激光物理联合实验室,上海201800 [2]上海大学机电工程与自动化学院,上海200072

出　　处：《中国激光》2014年第12期163-169,共7页Chinese Journal of Lasers

基　　金：国家重大科技专项(05010206.3)

摘　　要：惯性约束聚变(ICF)研究中对实验靶的瞄准和定位具有很高的精度要求,设计了一套基于中心辅助参考系统、靶定位系统和靶准直器三个单元组合的技术方案,借助有限元法分析了系统静态变形和瞬态稳定性,提出了束靶耦合的高分辨率平行光管精密校准方法,实现了神光II升级装置优于12μm的靶瞄准和定位精度。该方案使得装置成功实现了Φ800μm实验靶单路激光97.5%的穿孔效率,为后续相关物理实验的高精度靶瞄准和定位奠定了坚实的基础。High accuracy of target aiming and positioning is required in the study of the inertial confinement fusion （ICF）. A system based on the chamber center reference system, the target positing system and the target alignment sensor is designed. The finite element method is used for analyzing the static deformation and transient stability of this system, and it proposes a calibration method of the high resolution parallel light pipe to achieve the system coupling precision. It achieves target aiming and positioning precision better than 12 μm of the SG-II updated laser facility. Through the SG-II updated laser facility single laser beam across the Ф 800 μm hole target, the perforation efficiency is 97. 5%. This provides a solid foundation for high accuracy targeting of the follow-up physical experiment＇s requirement.

关 键 词：激光器 高功率激光 瞄准 靶定位 有限元分析 精密校准 

分 类 号：O436[机械工程—光学工程]