The role of parallel heat transport in the relation between upstream scrape-off layer widths and target heat flux width in H-mode plasmas of the National Spherical Torus Experiment
The role of parallel heat transport in the relation between upstream scrape-off layer widths and target heat flux width in H-mode plasmas of the National Spherical Torus Experiment
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DOI：
10.1063/1.3043799
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发表时间：
2008-12
影响因子：
2.2
通讯作者：
J. Ahn;J. Boedo;R. Maingi;V. Soukhanovskii
中科院分区：
文献类型：
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作者：
J. Ahn;J. Boedo;R. Maingi;V. Soukhanovskii
在国家球形环面实验的刮除层 (SOL) 等离子体中测试了并行热传输的物理特性 [M.小野等人，Nucl。融合 40, 557 (2000)； S. M. Kaye 等人，Nucl。 Fusion 45, S168 (2005)] 托卡马克，通过将中平面往复探针测量的上游电子温度 (Te) 和密度 (ne) 分布与红外相机测量的偏滤器板处的热通量 (q⊥) 分布进行比较。研究发现，电子传导相当好地解释了近 SOL 宽度数据，而处于鞘层限制区域的远 SOL 需要比电子热通量分布更宽的离子热通量分布才能与实验数据一致。测量的等离子体参数表明，SOL 能量传输应处于 R−Rsep（距分界线位置的径向距离）2-3cm 的传导限制范围内。 Te、ne 和 q⊥ 轮廓可以通过offs 更好地描述...
The physics of parallel heat transport was tested in the scrape-off layer (SOL) plasma of the National Spherical Torus Experiment [M. Ono et al., Nucl. Fusion 40, 557 (2000); S. M. Kaye et al., Nucl. Fusion 45, S168 (2005)] tokamak by comparing the upstream electron temperature (Te) and density (ne) profiles measured by the midplane reciprocating probe to the heat flux (q⊥) profile at the divertor plate measured by an infrared camera. It is found that electron conduction explains the near SOL width data reasonably well while the far SOL, which is in the sheath limited regime, requires an ion heat flux profile broader than the electron one to be consistent with the experimental data. The measured plasma parameters indicate that the SOL energy transport should be in the conduction-limited regime for R−Rsep (radial distance from the separatrix location) 2–3cm. The Te, ne, and q⊥ profiles are better described by an offs...