论文标题
通过舷外移动Langmuir探针的刮擦层粒子通量宽度的实验缩放尺度，东方具有有利的BT配置
Experimental scaling of the scrape-off layer particle flux width by outboard divertor Langmuir probes with favorable Bt configuration on EAST
论文作者
论文摘要
刮擦层（SOL）功率宽度（λ_Q）对于预测未来磁性限制设备的分离目标上的热负载很重要。目前，尚不完全了解λ_Q缩放的基础物理。本文扩展了先前的板内溶胶粒子通量宽度（λ_{js}）缩放[Liu et al 2019等离子体物理。控制。融合61 045001]到东方的舷外侧，这可以为λ_Q研究提供更多的实验证据。已经开发了一种系统的方法来纠正及其更可靠的邻近测量值，以纠正较不可靠的上部外部（UO）langmuir探针（DIV-LP）测量值，以降低λ_JS的测量不确定性。对于2019年实验活动中有良好的BT和上部单零配置的排放，通过某些标准选择了约260次排放，以确保良好的λ_JS测量值。已经构建了三个H模式，L模式和欧姆数据库，并用于λ_JS量表。发现H模式和L模式等离子体的外侧λ_JS缩放为，λ_（js，uo）= 1.52（w_ {mhd}/n_e）^（ - 0.61）p_ {tot}^0.19，其中w_ {mhd}是w_ {mhd}，n _ is n _e int ins n _e is the int intective，n _e int in topity inter-putive dipaties and-pertive distective distective distective。 力量。此缩放比例类似于内侧λ_JS缩放率，除了可能是由于三角形的缩放幅度。对于W_ {MHD}/N_E的可重复缩放依赖性，即使回归质量相对较差，也证实了此依赖性的可靠性。还讨论了BP上仅λ_Q/λ_{JS}的仅缩放不足以包括所有溶胶热传输的物理。
The scrape-off layer (SOL) power width (λ_q) is important for predicting the heat load on divertor targets for future magnetically confined devices. Currently, the underlying physics for λ_q scaling is not fully understood. This paper extends the previous inboard SOL particle flux width (λ_{js}) scaling [Liu et al 2019 Plasma Phys. Control. Fusion 61 045001] to the outboard side in EAST, which can provide more experimental evidence for λ_q study. A systematic method has been developed to correct the less reliable upper outer (UO) divertor Langmuir probe (Div-LP) measurements with their more reliable neighboring measurements to reduce the measurement uncertainty of λ_js. For the discharges with the favorable Bt and upper single null configurations in the 2019 experiment campaign, about 260 discharges have been selected by certain criteria to ensure good λ_js measurements. Three H-mode, L-mode, and Ohmic databases have been constructed and are used for λ_js scalings. It is found that the outboard λ_js for the H-mode and L-mode plasmas scales as, λ_(js,UO)=1.52(W_{MHD}/n_e)^(-0.61) P_{tot}^0.19, where W_{MHD} is the stored energy, n_e is the line-averaged density, and P_{tot} is the total input power. This scaling is similar to the inboard λ_js scaling except for the scaling amplitude that is probably due the triangularity. The repeatable scaling dependence on W_{MHD}/n_e confirms the reliability of this dependence even though the regression quality is relatively poor. It is also discussed that the solely scaling of λ_q/λ_{js} on Bp is not enough to include all the physics of SOL heat transports.
