Interplay between SOL flows, transport and divertor conditions.

磁约束核聚变中等离子体表面是实现这一概念的关键，在该区域中输运势垒的形成取决于许多参数和边界条件。其中，长期平均等离子体排气和等离子体与固体材料之间的相互作用对聚变装置的安全运行提出了实质性的限制，并可能影响受限区域的物理。冷自由等离子体的耦合因此，人们对热堆芯（刮削层，SOL）与热堆芯的耦合了解甚少。本项目是了解这种耦合的更广泛计划的一部分，其目的是解决连接SOL边界条件与受限等离子体的物理机制。有三个主要目标：1）在SOL的统计描述中改进关键参数的估计。2）在模拟和实验中量化速度分布，重点是剪切，因为这些可以显著地影响热量和质量传输，并在边缘产生紧急流动。3）使用随机描述建立简化模型，并耦合到并行动力学模拟，以解开流动条件的磁几何依赖性的来源。

The plasma surface in magnetic confinement fusion is critical to the success of the concept.The formation of transport barriers in this region is dependent on many parameters andboundary conditions. Among these, the long-term average plasma exhaust and the consequentinteractions between the plasma and solid materials put substantial constraints on the safeoperation of fusion devices and can influence the physics of the confined region. The couplingof the cold unconfined plasma (scrape-off layer, SOL) to the hot core is thus poorly understood.This project is part of a broader programme to understand this coupling and it is aimed ataddressing the physical mechanisms connecting the SOL boundary conditions to the confined plasma.There are three main objectives:1) Improve the estimation of critical parameters in a statistical description of the SOL.2) Quantify velocity distributions with emphasis on shear in both simulation and experiment,as these can significantly impact heat and mass transport and seed emergent flows in the edge.3) Build on simplified model using stochastic description and couple to parallel dynamicssimulation to unravel the source of magnetic geometry dependence of flow conditions.