中文摘要：

在“启明星-1”实验装置的设计基础上，设计了三束流驱动ADS次临界反应堆堆芯的布置方案，计算并比较了三束流驱动和单束流驱动ADS次临界堆内径向与轴向中子通量密度分布．结果表明，三束流驱动ADS的次临界反应堆的布置方案通过调整源点位置能降低堆内轴向功率形状因子，能够有效的展平堆内功率径向分布．

英文摘要：

Based on the design of China ADS ＂Venus - 1＂ assembly, the sub - critical re- actor core driven by three proton beams is designed and the compared result of radial and axial neutron flux density distribution driven by three and a single beam is given in this pa- per. Calculated result shows that this design can decrease the axial power shape factor by modulating source location and the core power distribution should be smoothed effective.