Dust Transport in MAST-U

本项目的目的是通过实验研究尘埃的传输和动员：i)验证磁化等离子体中DTOKS中使用的物理模型；ii)研究不同偏滤器(托卡马克的排气)配置的MAST-U中尘埃的迁移和传输。将在利物浦的磁化射频等离子体实验上进行实验，验证现有的离子阻力模型并研究表面的动员。将使用先进的等离子体诊断技术，如RFEA、朗缪尔和红外探测器、成像发射光谱和快速可见光相机。为了研究MAST-U中的粉尘动员和传输，将使用最近开发的改进型DSF(偏滤器科学设施)探头来为MAST-U和ITER相关的槽(代表典型的瓷砖间隙)使用单独的探头来注入粉尘。使用快速可见光和红外线摄像机的立体成像和机器学习尘埃跟踪算法，以及其他诊断方法(如朗缪尔探头)将用于重建尘埃轨迹。等离子体背景模拟和DTOK预测将被用来验证现有的模型，并研究从重建的轨迹中的尘埃传输。

The aim of this project is to experimentally study dust transport and mobilization to: i) verify thephysical models used in DTOKs in a magnetized plasma; ii) study the mobilization and transport ofdust in MAST-U with different divertor (the tokamak's exhaust) configurations. Experiments verifyingexisting ion drag models and studying mobilization from surfaces will be performed at Liverpool onthe magnetized RF plasma experiment. Advanced plasma diagnostics such as RFEA, Langmuir andemissive probes, imaging emission spectroscopy and fast visible cameras will be used. To study dustmobilization and transport in MAST-U a recently developed modified DSF (Divertor Science Facility)probe head will be used to inject dust with a separate head for MAST-U and ITER relevant slots(representing typical tile gaps). Stereoscopic imaging, using fast visible and infra-red cameras and amachine learning dust tracking algorithm, along with other diagnostics (such as Langmuir probes)will be used to reconstruct the dust trajectory. Plasma background simulations along with DTOKspredictions will then be used to verify existing models and study dust transport from thereconstructed trajectories.