Effect of edge magnetic island on carbon screening in the J-TEXT tokamak

被引：0

作者：

张晓龙 ^{[1
,2
]}

程芝峰 ^{[3
]}

周松 ^{[3
]}

梁云峰 ^{[3
,4
]}

严伟 ^{[3
]}

王能超 ^{[3
]}

张霄翼 ^{[3
]}

江中和 ^{[3
]}

杨州军 ^{[3
]}

徐鑫 ^{[3
]}

李达 ^{[3
]}

李琼 ^{[3
]}

林晓东 ^{[1
,2
]}

丁永华 ^{[3
]}

陈忠勇 ^{[3
]}

陈志鹏 ^{[3
]}

JTEXT Team ^{[3
]}

机构：

[1] Advanced Energy Research Center, Shenzhen University

[2] Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University

[3] State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology

[4] Forschungszentrum Jülich Gmb H, Institut für Energie und

来源：

Plasma Science and Technology | 2021年 / 12期

关键词：

D O I：

暂无

中图分类号：

TL631.24 [];

学科分类号：

摘要：

The effect of externally applied resonant magnetic perturbation(RMP) on carbon impurity behavior is investigated in the J-TEXT tokamak. It is found that the m/n=3/1 islands have an impurity screening effect, which becomes obvious while the edge magnetic island is generated via RMP field penetration. The impurity screening effect shows a dependence on the RMP phase with the field penetration, which is strongest if the O point of the magnetic island is near the low-field-side(LFS) limiter plate. By combining a methane injection experimental study and STRAHL impurity transport analysis, we found that the variation of the impurity transport dominates the impurity screening effect. The impurity diffusion at the inner plasma region(r/a<0.8) is enhanced with a significant increase in outward convection velocity at the edge region in the case of the magnetic island's O point near the LFS limiter plate. The impurity transport coefficient varies by a much lower level for the case with the magnetic island's X point near the LFS limiter plate. The interaction of the magnetic island and the LFS limiter plate is thought to contribute to the impurity transport variation with the dependence on the RMP phase.A possible reason is the interaction between the magnetic island and the LFS limiter.

引用

页码：27 / 36

页数：10

共 30 条

[1] Experimental and simulation study of impurity transport response to RMPs in RF-heated H-mode plasmas at EAST[J] Vogel Germán;Zhang Hongming;Shen Yongcai;Dai Shuyu;Sun Youwen;Huang Juan;Gu Shuai;Fu Jia;Hu Ruiji;Chen Jun;Du Xuewei;Wang Qiuping;Yu Yi;Mao Shifeng;Lyu Bo;Ye Minyou Journal of Plasma Physics 2021,
[2] The density dependence of edge-localized-mode suppression and pump-out by resonant magnetic perturbations in the DIII-D tokamak[J] Hu Q. M.;Nazikian R.;Grierson B. A.;Logan N. C.;Park J. K.;Paz Soldan C.;Yu Q. Physics of Plasmas 2019,
[3] Spectral diagnostic system for light impurity transport study in J-TEXT Tokamak[J] X.L. Zhang;Z.F. Cheng;X.D. Lin;H.S Mo;W.W. Zhang;X.Y. Zhang;W. Yan;L. Gao;Z.J. Yang;G. Xiang;L.J. Gang;Z.Y. Cui Fusion Engineering and Design 2019,
[4] First demonstration of radiative power exhaust with impurity seeding in the island divertor at Wendelstein 7-X[J] F. Effenberg;S. Brezinsek;Y. Feng;R. König;M. Krychowiak;M. Jakubowski;H. Niemann;V. Perseo;O. Schmitz;D. Zhang;T. Barbui;C. Biedermann;R. Burhenn;B. Buttenschön;G. Kocsis;A. Pavone;F. Reimold;T. Szepesi;H. Frerichs;Y. Gao;U. Hergenhahn;S. Kwak;M. Otte;T. Sunn Pedersen;W7-X Team Nuclear Fusion 2019,
[5] Overview of the recent experimental research on the J-TEXT tokamak[J] Y. Liang;N.C. Wang;Y.H. Ding;Z.Y. Chen;Z.P. Chen;Z.J. Yang;Q.M. Hu;Z.F. Cheng;L. Wang;Z.H. Jiang;B. Rao;Z. Huang;Y. Li;W. Yan;D. Li;H. Liu;L. Zeng;Y. Huang;D.W. Huang;Z.F. Lin;W. Zheng;F.R. Hu;K.J. Zhao;M. Jiang;Y.J. Shi;H. Zhou;S.T. Peng;W.X. Guo;L. Gao;Z.J. Wang;M. Zhang;K.X. Yu;X.W. Hu;Q. Yu;G. Zhuang;K.W. Gentle;Y. Pan;the J-TEXT Team Nuclear Fusion 2019,
[6] Investigation of RMP induced density pump-out on EAST[J] S.X. Wang;H.Q. Liu;Y.X. Jie;W.X. Ding;L. Zeng;Y.W. Sun;H. Lian;X. Zhu;Z.Y. Zou;B. Lyu;Y.Y. Li;Q. Zang;H.F. Du;C. Zhou;A.D. Liu;T. Zhang;W. Gao;X. Gao;The EAST Team Nuclear Fusion 2018,
[7] Study of the impact of resonant magnetic perturbation fields on gross tungsten erosion using DiMES samples in DIII-D[J] E T Hinson;O Schmitz;H Frerichs;T Abrams;A Briesemeister;D L Rudakov;E A Unterberg;W R Wampler;J G Watkins;H Q Wang Physica Scripta 2017,
[8] HINT modeling of three-dimensional tokamaks with resonant magnetic perturbation[J] Yasuhiro Suzuki Plasma Physics and Controlled Fusion 2017,
[9] Vertical profiles and two-dimensional distributions of carbon line emissions from C2+-C5+ ions in attached and RMP-assisted detached plasmas of large helical device[J] Hongming Zhang;Shigeru Morita;Shuyu Dai;Tetsutarou Oishi;Motoshi Goto;Xianli Huang;Gakushi Kawamura;Masahiro Kobayashi;Yang Liu;Izumi Murakami;Yoshiro Narushima;LHD Experimental Group Physics of Plasmas 2017,
[10] Plasma response to m/n = 3/1 resonant magnetic perturbation at J-TEXT Tokamak[J] Qiming Hu;Jianchao Li;Nengchao Wang;Q. Yu;Jie Chen;Zhifeng Cheng;Zhipeng Chen;Yonghua Ding;Hai Jin;Da Li;Mao Li;Yang Liu;Bo Rao;Lizhi Zhu;Ge Zhuang;the J-TEXT Team Nuclear Fusion 2016,

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