alidation of the plasma-wall interaction simulation code ERO2.0 by the analysis of tungsten migration in the open divertor region in the Large Helical Device
alidation of the plasma-wall interaction simulation code ERO2.0 by the analysis of tungsten migration in the open divertor region in the Large Helical Device
复制标题
通过分析大型螺旋装置中开放偏滤器区域中的钨迁移来验证等离子体-壁相互作用模拟代码 ERO2.0
DOI：
10.1016/j.nme.2022.101257
复制
发表时间：
2022
影响因子：
2.6
通讯作者：
S. Brezinsek
中科院分区：
文献类型：
--
作者：
M. Shoji;G. Kawamura;J. Romazanov;A. Kirschner;S. Masuzaki;G. Motojima;M. Kobayashi;M. Tokitani;S. Brezinsek
为了验证三维等离子体-壁相互作用仿真程序ERO2.0的正确性，对大螺旋装置中开放分流器区域钨的迁移进行了分析。ERO2.0模拟再现了安装在环体内侧的钨涂层导流板的局部钨迁移测量。模拟还解释了在低磁场强度的逆时针方向等离子体放电中，钨提示再沉积在钨涂层导流板旁边的碳导流板上的高钨面密度的测量。然而，模拟结果与碳导流板上等离子体润湿区域的低钨面密度测量结果不一致，这表明再沉积钨的实际侵蚀速率应远高于ERO2.0代码中使用的速率。
Tungsten migration in the open divertor region in the Large Helical Device is analyzed for validating the three-dimensional plasma-wall interaction simulation code ERO2.0. The ERO2.0 simulation reproduced the measurement of localized tungsten migration from a tungsten-coated divertor plate installed in the inboard side of the torus. The simulation also explained the measurement of the high tungsten areal density in the private side on a carbon divertor plate, next to the tungsten-coated divertor plate, by the tungsten prompt redeposition in plasma discharges for a low magnetic field strength in a counterclockwise toroidal direction. However, the simulation disagreed with the measurement of low tungsten areal density on the plasma-wetted areas on the carbon divertor plates, which indicated that the actual erosion rate of the redeposited tungsten should be much higher than that used in the ERO2.0 code.