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

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Comparative study of boron and neon injections on divertor heat fluxes using SOLPS-ITER simulations
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(R1)led to plasma detachment only at the inner target,and the localized B ions in the cases with injection from outer target location(R2)and upstream location(R3)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 R2 and R3,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.

boronneoninjection locationheat flux

彭磊、孙震、孙继忠、Rajesh Maingi、高放、Xavier Bonnin、常华溢、汪炜康、刘金远

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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

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boron neon injection location heat flux

2024

10.1088/1674-1056/ad711e

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(11)