Abstract The fuel cycle (FC) model FC-FNS is used for the calculation of hydrogen isotope flows in the fuel systems of the DEMO-FNS fusion neutron source (FNS) based on a tokamak with parameters R/a = 3.2 m/1 m, B = 5 T, Ipl = 4 to 5 MA, PNBI = 30 MW, РECR = 6 MW, and deuterium-tritium fusion power Pf = 40 MW. The FC-FNS model includes joint simulation of the gas, solid-state, and plasma flows of the fuel mixtures in the areas of the core and near-wall plasma when neon admixture is injected into the divertors. The basic principles of particle balance formation in the plasma and FC systems are described in the paper. In the process of fueling mode optimization, the requirements for productivity of the key FC systems containing the largest amount of T have been formulated. The FC configuration with the minimum tritium reserve (<2 kg) and the shortest processing time is selected.

中文翻译：

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混合设施 DEMO-FNS 的燃料系统架构和用于计算 FC-FNS 模型中燃料流量的算法

摘要 燃料循环（FC）模型 FC-FNS 用于计算基于托卡马克的 DEMO-FNS 聚变中子源（FNS）燃料系统中的氢同位素流量，参数 R/a = 3.2 m/1 m , B = 5 T, Ipl = 4 to 5 MA, PNBI = 30 MW, РECR = 6 MW, 氘氚聚变功率 Pf = 40 MW。FC-FNS 模型包括当氖混合物注入偏滤器时，对堆芯和近壁等离子体区域中燃料混合物的气体、固态和等离子体流的联合模拟。论文中描述了等离子体和 FC 系统中粒子平衡形成的基本原理。在供油方式优化过程中，制定了含T量最大的关键燃料电池系统产能要求。具有最小氚储备的 FC 配置 (<