Design of a distributed radiator target for inertial fusion driven from two sides with heavy ion beams
Design of a distributed radiator target for inertial fusion driven from two sides with heavy ion beams
复制标题
重离子束两侧驱动惯性聚变分布式散热器靶设计
DOI：
10.1063/1.872860
复制
发表时间：
1998
影响因子：
2.2
通讯作者：
D. Callahan
中科院分区：
文献类型：
--
作者：
M. Tabak;D. Callahan
描述了分布式辐射器重离子靶设计的现状。在综合计算中，当用 5.8-6.5 MJ 的 3-4 GeV Pb 离子驱动时，该目标点燃并产生 390-430 MJ 的产量。目标具有圆盘端板的圆柱对称性。离子以 5 毫米半径的光斑均匀地照射这些端板。导致这种设计的考虑因素与一些以前未使用的设计特征一起讨论：低密度黑腔壁与内部低 Z 填充材料近似压力平衡，辐射对称性由散热器材料和颗粒范围的位置确定，以及早期压力对称性可能受辐射垫片影响。讨论了该目标如何缩放以降低输入能量或降低光束功率。还讨论了具有更现实的光束聚焦策略的变体设计。描述了接受更高粒子能量的目标所需的权衡。
The status of a distributed radiator heavy-ion target design is described. In integrated calculations this target ignited and produced 390–430 MJ of yield when driven with 5.8–6.5 MJ of 3–4 GeV Pb ions. The target has cylindrical symmetry with disk endplates. The ions uniformly illuminate these endplates in a 5 mm radius spot. Considerations which led to this design are discussed together with some previously unused design features: low-density hohlraum walls in approximate pressure balance with internal low-Z fill materials, radiation symmetry determined by the position of the radiator materials and particle ranges, and early time pressure symmetry possibly influenced by radiation shims. How this target scales to lower input energy or to lower beam power is discussed. Variant designs with more realistic beam focusing strategies are also discussed. Tradeoffs required for targets which accept higher particle energies are described.