摘要
为了增加ICF激光驱动器的灵活性,使其可满足多种聚变点火方式,激光驱动器激光打靶角度的优化设计应以间接驱动为主,同时兼顾直接驱动。以神光Ⅲ主机装置为例,基于已有的间接驱动激光打靶角度设计,用球谐模和三维辐照场方法,完成了兼顾直接驱动打靶角度的优化,结果表明优化设计的打靶角度可实现小于1%的球靶表面辐照均匀性。同时分析了激光参数对辐照性能的影响,并获得了满足直接驱动要求的陡边小焦斑设计。
To increase the flexibility of ICF laser facility and meet the requirements of indirect-driven and direct driven fu sions, the beam configuration should he optimized. This paper takes the Shenguang Ⅲ as an example facility which was originally designed for indirect-driven fusion. The beam configuration for direct-driven fusion is optimized through spherical harmonic mode and three-dimensional irradiation field analysis. The optimization results show that the irradiation uniformity of the sphere target surface is less than 1%. Then irradiation uniformity and coupling efficiency are calculated with different laser profiles. The small and steep spot which direct-driven fusion requires is also obtained based on the beam configuration.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2013年第8期1961-1964,共4页
High Power Laser and Particle Beams
关键词
ICF激光驱动器
直接驱动
打靶角度
球谐模分析
辐照场分析
ICF laser facility
direct-driven fusion
beam angle
spherical-harmonic mode analysis
irradiation field analysis
