Abstract The breeding blanket will be the most important functional component generating tritium as fuel for a nuclear fusion reactor to maintain the D-T reactions. It is very significant to investigate the tritium generation rate and its distribution in a blanket system to achieve an effective blanket concept before any engineering activities startup. A neutronics probe ball method is proposed to estimate tritium generation rate for fusion blanket. And 150 probe balls in the range of 0.4–1 mm are employed in the neutronics model to occupy the probe positions, the radii of probe balls are increased gradually along with the radial direction considering neutron deep penetration. The total statistical variance is controlled within 2 % using 10 million incident neutrons. The proposed method provides an accurate solution on tritium generation rate using multi-point detection method for fusion engineering or other fields later.

中文翻译：

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核聚变反应堆覆盖层氚生成率模拟的中子学探测球法

摘要 增殖层将是产生氚作为核聚变反应堆维持DT反应的燃料的最重要的功能部件。在任何工程活动启动之前，调查氚生成率及其在毯式系统中的分布以实现有效的毯式概念非常重要。提出了一种中子学探测球法来估计聚变毯的氚生成率。中子学模型采用0.4-1mm范围内的150个探针球占据探针位置，考虑中子深度穿透，探针球的半径随着径向方向逐渐增加。使用 1000 万个入射中子，总统计方差控制在 2% 以内。