Experimental and simulation study of impurity transport response to RMPs in RF-heated H-mode plasmas at EAST
文献类型：期刊论文
| 作者 | Vogel, German2,3; Zhang, Hongming2; Shen, Yongcai4; Dai, Shuyu1; Sun, Youwen2 ; Huang, Juan2; Gu, Shuai2; Fu, Jia2; Hu, Ruiji2,3; Chen, Jun2,3
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| 刊名 | JOURNAL OF PLASMA PHYSICS
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| 出版日期 | 2021-03-29 |
| 卷号 | 87 |
| ISSN号 | 0022-3778 |
| 关键词 | fusion plasma plasma diagnostics plasma simulation |
| DOI | 10.1017/S0022377821000222 |
| 通讯作者 | Lyu, Bo(blu@ipp.ac.cn) ; Ye, Minyou(yemy@ustc.edu.cn) |
| 英文摘要 | Spatial profiles of impurity emission measurements in the extreme ultraviolet (EUV) spectroscopic range in radiofrequency (RF)-heated discharges are combined with one-dimensional and three-dimensional transport simulations to study the effects of resonant magnetic perturbations (RMPs) on core impurity accumulation at EAST. The amount of impurity line emission mitigation by RMPs appears to be correlated with the ion Z for lithium, carbon, iron and tungsten monitored, i.e. stronger suppression of accumulation for heavier ions. The targeted effect on the most detrimental high-Z impurities suggests a possible advantage using RMPs for impurity control. Profiles of transport coefficients are calculated with the STRAHL one-dimensional impurity transport code, keeping nu/D fixed and using the measured spatial profiles of Fe20+, Fe21+ and Fe22+ to disentangle the transport coefficients. The iron diffusion coefficient D-Fe increases from 1.0 - 2.0 m(2) s(-1) to 1.5 - 3.0 m(2) s(-1) from the core region to the edge region (rho > 0.5) after the onset of RMPs. Meanwhile, an inward pinch of iron convective velocity nu(Fe) decreases in magnitude in the inner core region and increases significantly in the outer confined region, simultaneously contributing to preserving centrally peaked Fe profiles and exhausting the impurities. The D-Fe and nu(Fe) variations lead to reduced impurity contents in the plasma. The three-dimensional edge impurity transport code EMC3-EIRENE was also applied for a case of RMP-mitigated high-Z accumulation at EAST and compared to that of low-Z carbon. The exhaust of C6+ toward the scrape-off layer accompanying an overall suppression of heavier W30+ is observed when using RMPs. |
| 资助项目 | National Magnetic Confinement Fusion Science Program of China[2017YFE0301303] ; National Natural Science Foundation of China[11805231] ; Distinguished Young Scholar of Anhui Provincial Natural Science Foundation[1908085J01] ; Anhui Province Nature Science Fund[1808085QA14] ; Anhui Province Nature Science Fund[2008085QA39] ; ASIPP Science Funds[DSJJ-202002] ; Collaborative Innovation Program of Hefei Science Center CAS[2019HSC-CIP005] ; Comprehensive Research Facility for Fusion Technology Program of China[2018-000052-73-01-001228] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | CAMBRIDGE UNIV PRESS |
| WOS记录号 | WOS:000634287300001 |
| 资助机构 | National Magnetic Confinement Fusion Science Program of China ; National Natural Science Foundation of China ; Distinguished Young Scholar of Anhui Provincial Natural Science Foundation ; Anhui Province Nature Science Fund ; ASIPP Science Funds ; Collaborative Innovation Program of Hefei Science Center CAS ; Comprehensive Research Facility for Fusion Technology Program of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/121455]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Lyu, Bo; Ye, Minyou |
| 作者单位 | 1.Dalian Univ Technol, Sch Phys, Minist Educ, Key Lab Mat Modificat Laser Ion & Electron Beams, Dalian 116024, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Sch Nucl Sci & Technol, Hefei 230026, Peoples R China 4.Hefei Normal Univ, Sch Phys & Mat Engn, Hefei 230601, Peoples R China 5.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Vogel, German,Zhang, Hongming,Shen, Yongcai,et al. Experimental and simulation study of impurity transport response to RMPs in RF-heated H-mode plasmas at EAST[J]. JOURNAL OF PLASMA PHYSICS,2021,87. |
| APA | Vogel, German.,Zhang, Hongming.,Shen, Yongcai.,Dai, Shuyu.,Sun, Youwen.,...&Ye, Minyou.(2021).Experimental and simulation study of impurity transport response to RMPs in RF-heated H-mode plasmas at EAST.JOURNAL OF PLASMA PHYSICS,87. |
| MLA | Vogel, German,et al."Experimental and simulation study of impurity transport response to RMPs in RF-heated H-mode plasmas at EAST".JOURNAL OF PLASMA PHYSICS 87(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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