Comparative study of boron and neon injections on divertor heat fluxes using SOLPS-ITER simulations  

作　　者：Lei Peng Zhen Sun Ji-Zhong Sun Rajesh Maingi Fang Gao Xavier Bonnin Hua-Yi Chang Wei-Kang Wang Jin-Yuan Liu 彭磊;孙震;孙继忠;Rajesh Maingi;高放;Xavier Bonnin;常华溢;汪炜康;刘金远(Key Laboratory of Materials Modification by Laser,Ion,and Electron Beams (Ministry of Education),Dalian University of Technology,Dalian 116024,China;Princeton Plasma Physics Laboratory,Princeton,NJ 08543,United States of America;School of Computer and Communication Engineering,Dalian Jiaotong University,Dalian 116028,China;ITER Organization,Route de Vinon-sur-Verdon,CS 90 046,13067 St-Paul-lez-Durance,France)

机构地区：[1]Key Laboratory of Materials Modification by Laser,Ion,and Electron Beams (Ministry of Education),Dalian University of Technology,Dalian 116024,China [2]Princeton Plasma Physics Laboratory,Princeton,NJ 08543,United States of America [3]School of Computer and Communication Engineering,Dalian Jiaotong University,Dalian 116028,China [4]ITER Organization,Route de Vinon-sur-Verdon,CS 90 046,13067 St-Paul-lez-Durance,France

出　　处：《Chinese Physics B》2024年第11期312-321,共10页中国物理B（英文版）

基　　金：Project supported by the National Key R&D Program of China(Grant No.2019YFE03030004);the National Natural Science Foundation of China(Grant No.12275040);the Users with Excellence Program of Hefei Science Center CAS(Grant No.2020HSC-UE010);This research is also sponsored in part by the U.S.Department of Energy under contract DEAC02-09CH11466.

摘　　要：Based on the EAST equilibrium,the effects of boron(B)and neon(Ne)injected at different locations on the target heat load,and the distributions of B and Ne particles were investigated by transport code SOLPS-ITER.It was found that the B injection was more sensitive to the injection location for heat flux control than impurity Ne.The high electron and ion densities near the inner target in the discharge with impurity B injected from over X-point(R_(1))led to plasma detachment only at the inner target,and the localized B ions in the cases with injection from outer target location(R_(2))and upstream location(R_(3))led to far-SOL detachment at the outer target,but not at the inner target.In contrast,for Ne,the spatial distributions of Ne ions and electrons were found to be similar in all the cases at the three injection locations,and the detached plasma was achieved at the inner target and the electron temperature was reduced at the outer target.For locations R_(2) and R_(3),impurity B showed a more pronounced effect on the heat flux at the far-SOL of the outer target.Further analysis indicated that Ne atoms came mainly from the recycling sources,whereas B atoms came mainly from injection,and that their distinct atomic distributions resulted from the difference in the ionization threshold and ionization mean free path.In addition,the radiation proportion of B in the divertor region was larger than that of Ne when the total radiation power was similar,which suggests that B has less influence on the core region.

关 键 词：BORON NEON injection location heat flux 

分 类 号：TL631.24[核科学技术—核技术及应用]