摘要
在中国环流三号(HL-3)装置上发展了一套偏滤器原子反应实时诊断系统,能够给出偏滤器区域复合反应和电离反应的主导区域和速率的空间分布,并对HL-3装置放电过程中偏滤器区域的原子反应特性进行了分析和研究。实验研究结果表明,在高再循环状态下,偏滤器区域最后封闭磁面附近原子反应由电离反应占主导,复合反应的主导区域和从电离反应到复合反应过渡的主导区域和复合反应分布在远离最后封闭磁面的区域。线平均电子密度的增加导致电离反应的分布区域和速率增加,并且增加加热功率,D_(α)和D_(γ)谱线的辐射明显增强,电离反应的速率增加,但是复合反应速率减小。这对于后续深入理解HL-3不同先进偏滤器位形下的脱靶机制,偏滤器脱靶实时控制及热负荷稳态控制技术具有重要意义。
A real-time diagnostic system has been developed for monitoring the atomic reaction in the divertor region on the HL-3 tokamak.The system can obtain the spatial distributions of recombination and ionization in the divertor region,and then atomic reaction characteristics of the divertor region are analyzed and studied.The experimental results demonstrate that in the high-recycling regime,the atomic reaction near last closed flux surface(LCFS)of the divertor region is mainly dominated by the ionization,and the dominant regions of the transition from ionization to recombination and the recombination are distributed away from LCFS.The increase in line-averaged electron density leads to an expansion in the distribution region and a rise in the rate of ionization.Higher heating power significantly enhances the radiation of D_(α) and D_(γ) spectral lines,resulting in an increased rate of ionization while reducing the occurrence of recombination.It is significant for the understanding of the detachment mechanism,real-time control of divertor detachment and steady-state control technology of heat load under the different divertor configurations of HL-3 tokamak in future.
作者
马会聪
高金明
才来中
何宗钰慧
杜海龙
王德真
MA Hui-cong;GAO Jin-ming;CAI Lai-zhong;HE Zong-yu-hui;DU Hai-long;WANG De-zhen(School of Physics,Dalian University of Technology,Dalian 116024;Southwestern Institute of Physics,Chengdu 610041)
出处
《核聚变与等离子体物理》
2025年第2期220-226,共7页
Nuclear Fusion and Plasma Physics
基金
国家重点科技发展计划项目(2018YFE0303101)。
作者简介
马会聪(1995-),男,河南开封人,博士研究生,从事偏滤器物理研究。;通讯作者:王德真(1958-),男,辽宁大连人,教授,从事托卡马克边界等离子体输运及其与壁相互作用研究。
