Hot spots induced by LHCD in the shadow of antenna limiters in the EAST tokamak
文献类型：期刊论文
| 作者 | Li, Y. L.1 ; Xu, G. S.1; Wu, Z. W.1; Zhang, B.1; Zhang, L.1; Yang, X. D.1; Chen, M. W.1; Zhang, T.1; Liu, H. Q.1; Wan, B. N.1
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| 刊名 | PHYSICS OF PLASMAS
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| 出版日期 | 2018-08-01 |
| 卷号 | 25期号:8页码:16 |
| ISSN号 | 1070-664X |
| DOI | 10.1063/1.5019255 |
| 通讯作者 | Li, Y. L.(ylli@ipp.ac.cn) ; Xu, G. S.(gsxu@ipp.ac.cn) |
| 英文摘要 | Hot spots induced by lower hybrid wave in experimental advanced superconducting tokamak tokamak have caused high performance experiment disruption and serious damages to the guard limiters. Experimental and theoretical analyses have been carried out to study its physical mechanism. Plasma density scan experiments indicate that the wall temperature within the hot spots enhanced by a factor of 5 and increases with the plasma density near the antenna. A lower hybrid current drive (LHCD)-only density climb experiment shows that the carbon impurity decreases to a minimum value at certain plasma density and then increases with the line averaged plasma density. A model has been developed to explain the mechanism of sputtering of graphite tiles due to hot spots as the plasma density near the LHCD antenna and the time increases. A theoretical scaling of the heat flux driven by LHCD is also presented and is consistent with the experimental scaling in the Tore Supra tokamak. The simulation results show that the total sputtering flux density has a minimum at a certain plasma density and gradually increases as the plasma density increases or decreases away from the minimum value, and the increase in parallel heat flux near the antenna would enhance the sputtering flux density. The sputtering flux density trend is qualitatively consistent with the density scan experiments. The simulated temporal evolution of sputtered flux implies that the chemical sputtering could be a candidate for the carbon impurity explosion. Published by AIP Publishing. |
| WOS关键词 | RADIATION-ENHANCED SUBLIMATION ; CHEMICAL EROSION ; TORE-SUPRA ; HYBRID ; CARBON ; JET ; ABSORPTION ; POWER ; HEAT |
| 资助项目 | International Postdoctoral Exchange Fellowship Program[20170009] ; National Magnetic Confinement Fusion Research Program of China[2015GB101000] ; National Magnetic Confinement Fusion Research Program of China[2015GB101002] ; National Magnetic Confinement Fusion Research Program of China[2015GB103003] ; National Natural Science Foundation of China[11705237] ; National Natural Science Foundation of China[11422546] ; National Natural Science Foundation of China[11405212] ; National Natural Science Foundation of China[11405213] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | AMER INST PHYSICS |
| WOS记录号 | WOS:000443730900044 |
| 资助机构 | International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; International Postdoctoral Exchange Fellowship Program ; 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| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/38764]  |
| 专题 | 合肥物质科学研究院_中科院等离子体物理研究所 |
| 通讯作者 | Li, Y. L.; Xu, G. S. |
| 作者单位 | 1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China 2.IRFM, CEA, F-13108 St Paul Les Durance, France 3.Bhabha Atom Res Ctr, Computat Anal Div, Visakhapatnam 520012, Andhra Pradesh, India 4.Univ Saskatchewan, Dept Phys & Engn Phys, 116 Sci Pl, Saskatoon, SK S7N 5E2, Canada |
| 推荐引用方式 GB/T 7714 | Li, Y. L.,Xu, G. S.,Wu, Z. W.,et al. Hot spots induced by LHCD in the shadow of antenna limiters in the EAST tokamak[J]. PHYSICS OF PLASMAS,2018,25(8):16. |
| APA | Li, Y. L..,Xu, G. S..,Wu, Z. W..,Zhang, B..,Zhang, L..,...&Chen, R..(2018).Hot spots induced by LHCD in the shadow of antenna limiters in the EAST tokamak.PHYSICS OF PLASMAS,25(8),16. |
| MLA | Li, Y. L.,et al."Hot spots induced by LHCD in the shadow of antenna limiters in the EAST tokamak".PHYSICS OF PLASMAS 25.8(2018):16. |
入库方式： OAI收割
来源：合肥物质科学研究院
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