Abstract Flow and stock of fuels in a fusion reactor has been investigated from the aspect of system-dynamics. In particular, operational scenario of the start-up only by deuterium has been discussed with an integrated model of burning plasmas including effects of dilution due to helium ash. The start-up only from deuterium has been attracting interests since initial loading of tritium in a fusion reactor is a critical issue because of limited availability of tritium. The present work solves the flow of tritium in a reactor with advanced modeling of plasma compared to a previous work. The temporal evolution of plasma temperature has been solved in an integrated manner of temperature and density profiles, an empirical scaling of energy confinement time, isotope effect of confinement, slowing down and velocity distribution function of energetic particles, dilution due to helium ash, and radiation losses. Performance of a reactor in terms of fusion power as well as tritium breeding has been assessed.

中文翻译：

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具有先进等离子体模型的聚变反应堆氘-氘启动过程中的燃料流量和库存

摘要 从系统动力学的角度研究了聚变堆中燃料的流动和储存。特别是，仅由氘启动的操作场景已经与燃烧等离子体的集成模型进行了讨论，包括氦灰稀释的影响。由于氚的可用性有限，在聚变反应堆中初始加载氚是一个关键问题，因此仅从氘启动已经引起了人们的兴趣。与之前的工作相比，目前的工作通过先进的等离子体建模解决了反应堆中氚的流动。等离子体温度的时间演化已经以温度和密度分布、能量限制时间的经验缩放、限制的同位素效应、高能粒子的减速和速度分布函数、氦灰稀释和辐射损失。已经评估了反应堆在聚变功率和氚增殖方面的性能。