HL-2M常规偏滤器位形抽气对碳杂质分布影响的模拟分析  

Simulation and analysis of the effect of pumping on carbon impurity distribution in HL-2M conventional divertor

作　　者：周月 郑国尧 杜海龙 潘宇东[1] 李佳鲜[1] 薛雷[1] 潘卫[1] 黄文玉 薛淼 彭媛媛 曲成海 ZHOU Yue;ZHENG Guo-yao;DU Hai-long;PAN Yu-dong;LI Jia-xian;XUE Lei;PAN Wei;HUANG Wen-yu;XUE Miao;PENG Yuan-yuan;QU Cheng-hai(Southwestern Institute of Physics,Chengdu 610041)

机构地区：[1]核工业西南物理研究院,成都610041

出　　处：《核聚变与等离子体物理》2021年第2期97-104,共8页Nuclear Fusion and Plasma Physics

基　　金：国家自然科学基金(11775071,11575056);国家磁约束核聚变能发展研究专项(2018YFE0301101,2018YFE030-1104)。

摘　　要：在小角度V型结构的HL-2M常规偏滤器位形下,采用SOLPS 5.0程序研究了抽气速率S_(p)对装置粒子排除控制能力及溅射产生的碳杂质分布的影响。模拟结果表明,当进入边缘区域的能量为4MW、上游密度为n_(sep)=3.0×10^(19)m^(-3)靶板电子温度T_(e)的上升和表面材料溅射增强,导致有效电荷量Z_(eff)升高。在抽气速率约为20~40m^(3)·s^(-1)时,常规偏滤器的粒子排除效率较高。The influence of pumping speed Sp on particle venting capacity and carbon impurity transport was studied with SOLPS 5.0 program in configuration of the HL-2 M conventional divertor with small angle V structure. The simulation results show that when the energy entering the edge area is 4 MW and the upstream density n_(sep)=3.0 ×10^(19)m^(-3), the excessive pumping speed(greater than that 40 m^(3)·s^(-1)) will rapidly reduce the neutral particle pressure and plasma density near the target plate, causing increase of the electron temperature T_(e) of the target plate and the enhancement of the surface material sputtering, resulting in increase of effective charge Z_(eff). The simulation results also show that the conventional divertor particle exclusion efficiency is high at the pumping speed of about 20~40 m^(3)·s^(-1).

关 键 词：SOLPS 5.0 偏滤器位形 粒子控制 热负载 有效电荷量Z_(eff) 

分 类 号：O532.11[理学—等离子体物理]