SOLPS analysis of neutral baffling for the design of a new diverter in DIII-D
SOLPS analysis of neutral baffling for the design of a new diverter in DIII-D
复制标题
DOI：
10.1088/1741-4326/aa6548
复制
发表时间：
2017-04
期刊：
影响因子：
3.3
通讯作者：
C. Sang;H.Y. Guo;P. Stangeby;L. Lao;T. Taylor
中科院分区：
文献类型：
--
作者：
C. Sang;H.Y. Guo;P. Stangeby;L. Lao;T. Taylor
利用SOLPS5.0代码，对偏滤器挡板几何形状的两个关键方面的相对重要性进行了评估：（i）偏滤器闭合，和（ii）场靶角。品质因数（FOM）被认为是在给定的功率输入下，在尽可能低的“上游”密度ne、sep、OMP下，实现目标处的电子温度泰特和目标处的平行功率通量密度q t的指定（低）值。正如预期的那样，根据这些FOM，发现正交目标和小掠射角目标的闭合度增加有助于更好的偏滤器。还发现，这些方面的组合比单独的任一方面显著更有效。后者似乎与目标处的泰特和氘气密度之间的强相关性有关，这是一篇配套论文（Stangeby P.C.和Sang C.F. 2017 Nucl.Fusion 57 056007）。
Using the SOLPS5.0 code, an assessment has been undertaken of the relative importance of two key aspects of divertor baffle geometry: (i) divertor closure, and (ii) field-target angle. The figures of merit (FOMs) have been taken to be achieving specified (low) values of electron temperature at the target, Tet, and parallel power flux density at the target, q‖t, at the lowest possible ‘upstream’ density, ne,sep,OMP, for a given power input. As expected, it was found that increased closure for both orthogonal targets and small glancing-angle targets make for a better divertor, based on these FOMs. It was also found that the combination of these aspects is significantly more effective than either aspect separately. The latter appears to be related to a strong correlation between Tet and deuterium gas density at the target, which is the subject of a companion paper (Stangeby P.C. and Sang C.F. 2017 Nucl. Fusion 57 056007).