论文标题
关于细丝在刮擦层垂直热传输中的作用
On the role of filaments in perpendicular heat transport at the Scrape-off Layer
论文作者
论文摘要
在这项工作中，我们对托卡马克中的溶胶细丝相关的粒子和热传输进行定量测量，并将密度肩部形成与远处的能量对流相关。这次尝试首次包括对背景和细丝的离子和电子温度的直接测量。以此目的，我们将来自ASDEX升级Tokamak的许多等效L模式放电的数据组合在一起，其中将不同的探针头安装在中平面操纵器上。通过与独立诊断的比较来验证这种方法。结果表明，肩部形成后与细丝相关的热传输增加。在溶胶中，仍发现细丝含有数厘米，可以携带大量的（最多五分之一）在分离质上弹出的功率。
In this work we carry out quantitative measurements of particle and heat transport associated to SOL filaments in a tokamak, and relate density shoulder formation to the advection of energy in the far SOL. For the first time, this attempt includes direct measurements of ion and electron temperatures for background and filaments. With this aim, we combine data from a number of equivalent L-mode discharges from the ASDEX Upgrade tokamak in which different probe heads were installed on the midplane manipulator. This approach is validated by a comparison with independent diagnostics. Results indicate an increase of heat transport associated to filaments after the shoulder formation. Several centimeters into the SOL, filaments are still found to carry a substantial fraction (up to one fifth) of the power ejected at the separatrix.
