Simulation studies of tungsten impurity behaviors during neon impurity seeding with tungsten bundled charge state model using SOLPS-ITER on EAST  

作　　者：Shanlu GAO Xiaoju LIU Guozhong DENG Tingfeng MING Guoqiang LI Xuexi ZHANG Xiaodong WU Xiaohe WU Bang LI Haochen FAN Xiang GAO 高善露;刘晓菊;邓国忠;明廷凤;李国强;张学习;吴晓东;邬潇河;李邦;樊皓尘;高翔(Institute of Plasma Physics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,People's Republic of China;University of Science and Technology of China,Hefei 230026,People's Republic of China;Advanced Energy Research Center,Shenzhen University,Shenzhen 518060,People's Republic of China)

机构地区：[1]Institute of Plasma Physics,Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230031,People's Republic of China [2]University of Science and Technology of China,Hefei 230026,People's Republic of China [3]Advanced Energy Research Center,Shenzhen University,Shenzhen 518060,People's Republic of China

出　　处：《Plasma Science and Technology》2022年第7期137-147,共11页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(Nos.12075283 and 11975271)。

摘　　要：An investigation into tungsten(W)impurity behaviors with the update of the EAST lower W divertor for H-mode has been carried out using SOLPS-ITER.This work aims to study the effect of external neon(Ne)impurity seeding on W impurity sputtering with the bundled charge state model.As the Ne seeding rate increases,plasma parameters,W concentration(C_(W)),and eroded W flux(Γ_(W)^(Ero))at both targets are compared and analyzed between the highly resolved bundled model‘jett’and the full W charge state model.The results indicate that‘jett’can produce divertor behaviors essentially in agreement with the full W charge state model.The bundled scheme with high resolution in low W charge states(<W^(20+))has no obvious effect on the Ne impurity distribution and thus little effect on W sputtering by Ne.Meanwhile,parametric scans of radial particle and thermal transport diffusivities(D_(⊥)andχ_(e,i))in the SOL are simulated using the‘jett’bundled model.The results indicate that the transport diffusivity variations have significant influences on the divertor parameters,especially for W impurity sputtering.

关 键 词：tungsten impurity sputtering bundled charge state model transport diffusivity SOLPS-ITER 

分 类 号：TL631.24[核科学技术—核技术及应用]