Transport and redeposition of plasma-facing materials in future fusion devices may have a critical influence on performance of in-vessel components. Evaluation of the impurity migration in diagnostic ports is important to predict degradation of in-vessel optics during the main plasma discharges as well as for development of in-situ cleaning maintenance. The Monte-Carlo code KITe was developed for modeling transport of neutral particles in weakly ionized plasma. The code employs advanced neutral particle collision model. The first KITe simulation and experimental validation of sputtered atom transport demonstrate performance of the proposed approach.

中文翻译：

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气体和弱电离等离子体中的中性输运的三维模拟

在未来的融合设备中，面向等离子体的材料的运输和再沉积可能会对血管内组件的性能产生关键影响。对诊断端口中杂质迁移的评估对于预测主要等离子体放电期间内插式光学器件的退化以及开发现场清洁维护非常重要。蒙特卡洛代码KITe是为模拟中性粒子在弱电离等离子体中的传输而开发的。该代码采用了先进的中性粒子碰撞模型。首次KITe仿真和溅射原子传输的实验验证证明了该方法的性能。