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首页> 外文期刊>Fusion Engineering and Design >Proof-of-principle experiments on the concept of moving-surface plasma-facing components―hydrogen recycling over a titanium-gettered rotating drum
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Proof-of-principle experiments on the concept of moving-surface plasma-facing components―hydrogen recycling over a titanium-gettered rotating drum

机译：运动面等离子体组件概念的原理验证实验–吸钛钛转鼓上的氢循环

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In the magnetic fusion community much attention has recently been directed to particle control in the existing confinement experiments, as it is recognized that the core plasma performance can directly be affected by the edge conditions. However, it is still true that there is no clear strategy to cope with the needs for steady-state reactor operation. That is that, due to the saturation nature, wall conditioning such as boronization is not applicable for fuel and impurity particles control in steady-state devices, requiring a start from enabling concepts development. As a possible solution, the concept of moving-surface plasma-facing components (MS-PFCs) was proposed in our previous work and in the present work proof-of-principle experiments have been conducted. In this concept, the plasma-facing surface is mechanically circulated out-of-pile for regeneration of particle capturing capabilities by coating getter films on it. A prototypical MS-PFC test unit has been constructed for these proof-of-principle experiments, employing a rotating copper drum as the moving surface and titanium as the getter material. It has been indicated that, from H_ αlight intensity data taken in front of the rotating target, relative to no getter cases, approximately 6% reduced hydrogen recycling has been achieved at steady state. In support of these data, a first-order particle balance model predicts a 7% reduction in hydrogen recycling.
机译：在磁聚变界中，最近已经在现有的限制实验中将许多注意力转移到了粒子控制上，因为人们认识到核心等离子体的性能会直接受到边缘条件的影响。但是，仍然确实没有明确的策略来满足稳态反应堆运行的需求。即，由于饱和特性，诸如硼化之类的壁调节不适用于稳态装置中的燃料和杂质颗粒的控制，这需要从能够进行概念开发开始。作为一种可能的解决方案，在我们以前的工作中提出了运动表面等离子体组件（MS-PFC）的概念，并且在本工作中已经进行了原理验证实验。在此概念中，面向等离子体的表面会在桩外进行机械循环，以通过在其上覆盖吸气剂膜来再生颗粒捕获能力。已为这些原理验证实验构建了原型MS-PFC测试单元，采用旋转的铜鼓作为移动表面，钛作为吸气剂材料。已经表明，相对于没有吸气剂情况，从在旋转目标前面获取的H_α光强度数据，在稳态下可减少大约6％的氢循环。为了支持这些数据，一阶颗粒平衡模型预测氢气再循环减少7％。

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