闪烁体光束准直光学系统设计  

Design of Optical System for Scintillator Beam Collimation

作　　者：马欣茹 胡浩 胡晓雪 王晓雷[1,2] MA Xinru;HU Hao;HU Xiaoxue;WANG Xiaolei(Institute of Modern Optics,College of Electronic Information and Optical Engineering,Nankai University,Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology,Tianjin 300350,China;National Key Laboratory of Intense Pulsed Radiation Simulation and Effect,Xi’an 710024,China)

机构地区：[1]南开大学电子信息与光学工程学院,现代光学研究所,天津市微尺度光学信息技术科学重点实验室,天津300350 [2]强脉冲辐射环境模拟与效应全国重点实验室,西安710024

出　　处：《现代应用物理》2024年第2期42-51,共10页Modern Applied Physics

基　　金：强脉冲辐射环境模拟与效应全国重点实验室基金资助项目(SKLIPR2123)。

摘　　要：为更好地实现对闪烁光的高效率收集和高质量准直,提升探测效果,便于进行后续的闪烁体光束控制或偏转等实验,分别提出了同轴光束准直系统和离轴光束准直系统,设计优化了该系统中的自由曲面透镜、二次曲面反射镜等器件的参数。采用光学软件LightTools对闪烁体光束准直系统进行仿真。结果表明:所设计的同轴光束准直系统和离轴光束准直系统均能有效地实现对闪烁光的准直,其中自由曲面透镜离轴反射镜系统将光束发散角从±40°压缩为±5°,光能利用率可达96%以上,光束角内光能利用率达83%以上,实现了对光束传播方向的调控,提高了闪烁光的收集效率。To achieve more efficient collection and high quality collimation of scintillation light,enhance the detection efficiency of particle beams,and facilitate subsequent experiments such as light beam control and deflection of scintillator,a coaxial beam collimation system and an off-axis beam collimation system are proposed,respectively.The parameters of devices in the systems,such as freeform lenses and conic surface reflector are optimized.And optical software LightTools is used to simulate the beam collimation systems of scintillator.The simulation results show that the designed systems effectively achieve the collimation of scintillation light.The off-axis beam collimation system with freeform surface lens and off-axis reflector significantly reduces the beam divergence angle from±40°to±5°.The light energy utilization rate can reach over 96%,with the in-beam angle light energy utilization rate exceeding 83%.The control of beam propagation direction is achieved and collection efficiency of scintillation light is improved.

关 键 词：闪烁体 发散角 光收集效率 自由曲面透镜 二次曲面反射镜 光学准直系统 

分 类 号：TL812[核科学技术—核技术及应用] O571[理学—粒子物理与原子核物理]