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Recent Progress in Modeling of CFETR Plasma Profiles from Core to Edge
Journal of Fusion Energy ( IF 1.1 ) Pub Date : 2021-03-26 , DOI: 10.1007/s10894-021-00292-7
Jiale Chen , Guozhang Jia , Nong Xiang

Simulation studies of core plasmas and edge plasmas are performed in ASIPP to accommodate plasma profiles from core to edge based on physics modeling for the CFETR physics design. The coupling between the modeling for core plasmas and edge plasmas are described. The recent progress of the integrated core-pedestal simulations for core plasmas and the SOLPS simulations for plasmas in pedestal-SOL-divertor region are presented, respectively. In the optimization study for core plasma performance, moderate Zeff (~ 2.2) at pedestal top and a high ratio of density at separatrix to density at pedestal (nsep/nped ~ 0.5) are found to be beneficial for the achievement of a high fusion gain in CFETR hybrid scenarios. The edge plasma simulations using the SOLPS code show that using either neon or argon impurity seeding can reduce the stationary power density on the divertor target to an acceptable level (< 10 MW/m2) but Zeff at pedestal top is still high (Zeff ~ 3). Future works to improve the consistence between the simulations of core and edge plasmas are discussed.



中文翻译:

从核心到边缘的CFETR等离子轮廓建模的最新进展

基于CFETR物理设计的物理模型,在ASIPP中进行了核心等离子体和边缘等离子体的仿真研究,以适应从核心到边缘的等离子体轮廓。描述了核心等离子体和边缘等离子体的建模之间的耦合。分别介绍了核心等离子的集成核-基座模拟和基座-SOL-偏滤器区域中的等离子体的SOLPS模拟的最新进展。在核心等离子体性能的优化研究中,基座顶部的Z eff(〜2.2)适中,分离层密度与基座的密度之比高(n sep / n ped 在CFETR混合场景中,发现〜0.5)有助于实现高融合增益。使用SOLPS代码进行的边缘等离子体模拟表明,使用氖或氩杂质注入可以将偏滤器靶上的固定功率密度降低到可接受的水平(<10 MW / m 2),但基座顶部的Z eff仍然很高(Z eff〜3  )。讨论了改善核芯和边缘等离子体模拟之间一致性的未来工作。

更新日期:2021-03-26
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