Heat and particle transport of SOL and divertor plasmas in the W?shaped divertor on JT-60U
Heat and particle transport of SOL and divertor plasmas in the W?shaped divertor on JT-60U
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DOI：
10.1088/0029-5515/39/11y/344
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发表时间：
1999-11
期刊：
影响因子：
3.3
通讯作者：
N. Asakura;S. Sakurai;N. Hosogane;M. Shimada;K. Itami;Y. Koide;O. Naito
中科院分区：
文献类型：
--
作者：
N. Asakura;S. Sakurai;N. Hosogane;M. Shimada;K. Itami;Y. Koide;O. Naito
对W形偏滤器对偏滤器等离子体的几何效应进行了定量研究。在偏滤器撞击点附近离子通量增加，这对于降低局部电子温度和减少偏滤器脱附的起始点是有效的。利用安装在中平面和偏滤器X点的往复式马赫探针系统地测量了刮削层中的等离子体剖面和平行等离子体流。对于离子∇B漂移方向朝向偏滤器的情况，在中平面观察到“流向反转”。对平行等离子体流的定量评估表明，该流是在环面中产生的，以保持沿磁力线的压力恒定，这与测量结果一致。
The geometry effects of the W shaped divertor on the divertor plasma were investigated quantitatively. The ion flux was increased near the divertor strike point, which is effective for reducing the local electron temperature and decreasing the onset e of divertor detachment. The plasma profile and parallel plasma flow in the scrape-off layer were systematically measured using reciprocating Mach probes installed at the midplane and the divertor X point. For the ion ∇B drift direction towards the divertor, `flow reversal' was observed at the midplane. A quantitative evaluation of the parallel plasma flow suggesting that the flow is produced in a torus to keep the pressure constant along the field lines was consistent with the measurements.