Interplay between SOL flows, transport and divertor conditions.

磁约束聚变中的等离子体表面对概念的成功至关重要，该区域输运势垒的形成依赖于许多参数和边界条件。其中，长期平均的等离子体排气以及由此产生的等离子体与固体材料之间的相互作用严重制约了聚变装置的安全运行，并可能影响受限区域的物理特性。因此，对冷的无约束等离子体(刮离层，SOL)与热核的耦合了解得很少。本项目是理解这种耦合的更广泛计划的一部分，其目的是解决连接SOL边界条件和受限等离子体的物理机制。主要有三个目标：1)改进对SO2的统计描述中的关键参数的估计。2)在模拟和实验中量化速度分布，并强调剪切，3)在简化模型的基础上，采用随机描述，并与并行动力学模拟相结合，揭示了流动条件对磁场几何形状的依赖性。

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.