J-TEXT装置上的三维磁场分析研究  

Three-dimensional Magnetic Field Analysis on J-TEXT Device

作　　者：刘永超 龚学余[1,2] 杨文军 向东[2] 曹锦佳[2] LIU Yongchao;GONG Xueyu;YANG Wenjun;XIANG Dong;CAO Jinjia(School of Electrical Engineering, University of South China, Hengyang, Hunan 421001, China;School of Nuclear Science and Technology, University of South China, Hengyang, Hunan 421001, China)

机构地区：[1]南华大学电气工程学院,湖南衡阳421001 [2]南华大学核科学技术学院,湖南衡阳421001

出　　处：《南华大学学报（自然科学版）》2021年第2期53-62,共10页Journal of University of South China：Science and Technology

基　　金：国家磁约束核聚变能发展研究专项项目(2018YFE0309101);国家自然科学基金资助项目(11947056);南华大学核燃料循环技术与装备湖南省协同创新中心开放基金项目(2019KFY15)。

摘　　要：为了解决二维磁场位形的局限性,对三维磁场位形的研究势在必行。基于J-TEXT平衡参数,利用VMEC程序求解得到J-TEXT装置的三维磁场位形。此外,分析了等离子体电流、压强对磁场位形的影响,论证了VMEC程序应用在J-TEXT上的可行性。结果表明,VMEC程序能够初步满足J-TEXT装置的三维磁场位形研究要求,为后续装置三维磁场位形优化提供理论和工程借鉴意义。通过比较不同的等离子体电流,压强剖面对三维磁场的计算结果,表明了等离子体电流能够改变极向磁场强度,增大压强剖面使等离子体环状膨胀,磁轴外移。In order to solve the limitations of the two-dimensional magnetic field configuration,it is imperative to study the three-dimensional magnetic field configuration.Based on the J-TEXT equilibrium parameters,the VMEC code is used to solve the three-dimensional magnetic field configuration of the J-TEXT device.In addition,the influence of plasma current and pressure on the configuration of the magnetic field is analyzed,and the feasibility of applying the Variational Moments Equilibrium Code(VMEC)code to J-TEXT is demonstrated.The results show that the VMEC code can initially meet the research requirements of the three-dimensional magnetic field configuration of the J-TEXT device,and provide theoretical and engineering reference for the subsequent optimization of the three-dimensional magnetic field configuration of the device.By comparing different plasma currents,the calculation results of the pressure profile on the three-dimensional magnetic field show that the plasma current can change the polar magnetic field strength,and increase the pressure profile to make the plasma expand annularly and the magnetic axis move outward.

关 键 词：J-TEXT VMEC 磁场位形 

分 类 号：TL631.24[核科学技术—核技术及应用]