Investigation of multifaceted asymmetric radiation from the edge (MARFE) with impurity injection from the upper divertor on the Experimental Advanced Superconducting Tokamak
文献类型：期刊论文
| 作者 | Luo, Yu1,2; Ding, Fang1 ; Wang, Liang1; Duan, Yanmin1; Ming, Tingfeng1; Mao, Songtao1; Wang, Yumin1; Chen, Xiahua1; Li, Kedong1; Ye, Dawei1
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| 刊名 | PLASMA PHYSICS AND CONTROLLED FUSION
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| 出版日期 | 2020-07-01 |
| 卷号 | 62 |
| ISSN号 | 0741-3335 |
| 关键词 | MARFE detachment H-L transition Stark broadening density pump-out |
| DOI | 10.1088/1361-6587/ab8a62 |
| 通讯作者 | Ding, Fang(fding@ipp.ac.cn) |
| 英文摘要 | The phenomenon of multifaceted asymmetric radiation from the edge (MARFE) is investigated with impurity gas puff from the upper divertor on the Experimental Advanced Superconducting Tokamak (EAST). A typical process in which dense radiation region in the vicinity of the X point (X-point MARFE) further evolves into MARFE on the high field side (wall MARFE) after the plasma makes a transition from H-mode to L-mode confinement is observed in discharges with the impurity gas seeding. The electron density distribution and evolution in the divertor volume are measured by means of spectroscopy. It is observed in the experiments that the final position of MARFE is related to the ion backward difference B drift direction. After the phase difference of n = 1 resonant magnetic perturbation (RMP) change from 90 degrees to 270 degrees, MARFE begins to appear on the high field side, which may be caused by the density pump-out induced by RMP. At the same heating power, the density threshold for MARFE formation is somewhat higher in the Ne seeding discharge than in the Ar seeding discharge. This may be attributed to the fact that the divertor radiation fraction, P-rad,P-div/P-rad,P-main, in the Ne seeding discharge is lower than that in the Ar seeding discharge. In addition, MARFE is successfully suppressed by total radiated energy feedback control in radiative divertor experiments. Therefore, radiation feedback control may play a vital role in avoiding major disruption induced by impurity radiation in radiative divertor experiments. |
| WOS关键词 | DENSITY PROFILE ; DIII-D ; DISCHARGES ; BEHAVIOR ; JET ; REFLECTOMETRY ; LIMIT ; NEON ; WALL |
| 资助项目 | National Key Research and Development Program of China[2017YFE0301300] ; National Key Research and Development Program of China[2017YFA0402500] ; National Key Research and Development Program of China[2018YFE0303103] ; National Natural Science Foundation of China[11575243] ; National Natural Science Foundation of China[U19A20113] ; National Natural Science Foundation of China[11922513] ; National Natural Science Foundation of China[11625524] ; National Natural Science Foundation of China[11875287] ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-SLH001] ; K. C. Wong Education Foundation ; CASHIPS Director's Fund[BJPY2019A01] ; Users with Excellence Project of Hefei Science Center CAS[2018HSC-UE008] ; Users with Excellence Project of Hefei Science Center CAS[2018HSC-UE010] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000538529200001 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; K. C. Wong Education Foundation ; CASHIPS Director's Fund ; Users with Excellence Project of Hefei Science Center CAS |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/103111]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Ding, Fang |
| 作者单位 | 1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Dept Engn & Appl Phys, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Luo, Yu,Ding, Fang,Wang, Liang,et al. Investigation of multifaceted asymmetric radiation from the edge (MARFE) with impurity injection from the upper divertor on the Experimental Advanced Superconducting Tokamak[J]. PLASMA PHYSICS AND CONTROLLED FUSION,2020,62. |
| APA | Luo, Yu.,Ding, Fang.,Wang, Liang.,Duan, Yanmin.,Ming, Tingfeng.,...&Hu, Jiansheng.(2020).Investigation of multifaceted asymmetric radiation from the edge (MARFE) with impurity injection from the upper divertor on the Experimental Advanced Superconducting Tokamak.PLASMA PHYSICS AND CONTROLLED FUSION,62. |
| MLA | Luo, Yu,et al."Investigation of multifaceted asymmetric radiation from the edge (MARFE) with impurity injection from the upper divertor on the Experimental Advanced Superconducting Tokamak".PLASMA PHYSICS AND CONTROLLED FUSION 62(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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