In order to improve the irradiation uniformity of spherical target for laser direct driven sfsion, it is necessary optimizing the configuration of beams.

• 为提高激光直接驱动聚变中球靶的辐照均匀性,必须对光束的排布进行优化。本文通过分析球谐模的几何因子,提出了光束排布的优化规则。