EAST反向束在不同电流平台下注入的实验分析
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摘要
对EAST装置在相同束放电参数不同等离子体电流平台下开展的束反向注入实验进行了比较分析,并利用NUBEAM程序分析了不同的等离子体电流放电平台对束电流驱动、束功率沉积、束功率沉积分布及束能量损失的影响,以此来寻求优化的注入本底等离子体参数。结果表明,较高的电流平台更有利于束与等离子体的作用以及更有效提高本底等离子体温度、束驱动电流及等离子体旋转,更有效改善等离子体约束品质。
Comparative analysis of EAST neutral beam counter-injection experiment is carried out with the same beam parameters and different plasma current platforms. At the same time, the NUBEAM code is used to analyze beam current drive, power deposition, beam power deposition profile and beam energy loss, in order to optimize background plasma parameters. The results show that the higher current platform is more advantageous to the effect of beam on plasma, more effectively improving the background plasma temperature, beam-drive current, plasma rotation as well as the quality of plasma confinement.
Comparative analysis of EAST neutral beam counter-injection experiment is carried out with the same beam parameters and different plasma current platforms. At the same time, the NUBEAM code is used to analyze beam current drive, power deposition, beam power deposition profile and beam energy loss, in order to optimize background plasma parameters. The results show that the higher current platform is more advantageous to the effect of beam on plasma, more effectively improving the background plasma temperature, beam-drive current, plasma rotation as well as the quality of plasma confinement.
引文
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[2]Hu C D,NBI team.Conceptual design of neutral beam injection system for EAST[J].Plasma Science and Technology,2012,14(6):567?572.
[3]胡立群,张晓东,姚若河.EAST托卡马克的中性束注入方案[J].核技术,2006,29(2):149?152.
[4]吴斌.中性束注入综述[R].合肥:中国科学院等离子体物理研究所,2009.
[5]李昊,吴斌,王进芳,等.EAST 4MW中性束注入放电模拟研究[J].核聚变与等离子体物理,2014,34(1):57?62.
[6]Solomon W M,Kaye S M,Bell R E,et al.Momentumtransport studies in high E×B shear plasmas in the national spherical torus experiment[J].Phys.Rev.Lett.,2008,101:065004.
[7]Chang Pengxiang,Wu Bin,Wang Jinfang,et al.The influence of neutral beam injection on the heating and current drive with electron cyclotron wave on EAST[J].Plasma Science and Technology,2016,18(11):1064?1068.
[8]李昊.EAST中性束注入实验分析[D].合肥:中国科学技术大学研究生院,2015.
[9]Goumiri I R,Rowley C W,Sabbagh S A,et al.Modeling and control of plasma rotation for NSTX using neoclassical toroidal viscosity and neutral beam injection[R].Princeton Plasma Physics Laboratory,2015.
[10]Wu Bin,Wang Jinfang,Li Jibo,et al.Neutral beam injection simulation EAST[J].Fusion Engineering and Design,2011,86(6):947?948.
[11]王骥.EAST-NBI2注入实验[R].合肥:中国科学院等离子体物理研究所,2017.
[12]黄娟.EAST-NBI加热基本行为研究及相关跟随实验[R].合肥:中国科学院等离子体物理研究所,2017.