Study of the tungsten sputtering source suppression by wall conditionings in the EAST tokamak
文献类型：期刊论文
| 作者 | WANG,Junru1,3 ; YU,Yaowei1; WANG,Houyin1; CAO,Bin1; HU,Jiansheng1,2; XU,Wei1
|
| 刊名 | Plasma Science and Technology
 |
| 出版日期 | 2021-04-13 |
| 卷号 | 23 |
| 关键词 | tungsten sputtering source carbon impurity wall conditioning PWI EAST |
| ISSN号 | 1009-0630 |
| DOI | 10.1088/2058-6272/abec63 |
| 通讯作者 | YU,Yaowei() |
| 英文摘要 | Abstract The steady fusion plasma operation is constrained by tungsten (W) material sputtering issue in the EAST tokamak. In this work, the suppression of W sputtering source has been studied by advanced wall conditionings. It is also concluded that the W sputtering yield becomes more with increasing carbon (C) content in the main deuterium (D) plasma. In EAST, the integrated use of discharge cleanings and lithium (Li) coating has positive effects on the suppression of W sputtering source. In the plasma recovery experiments, it is suggested that the W intensity is reduced by approximately 60% with the help of ～35 h Ion Cyclotron Radio Frequency Discharge Cleaning (ICRF-DC) and ～40 g Li coating after vacuum failure. The first wall covered by Li film could be relieved from the bombardment of energetic particles, and the impurity in the vessel would be removed through the particle induced desorption and isotope exchange during the discharge cleanings. In general, the sputtering yield of W would decrease from the source, on the bias of the improvement of wall condition and the mitigation of plasma-wall interaction process. It lays important base of the achievement of high-parameter and long-pulse plasma operation in EAST. The experiences also would be constructive for us to promote the understanding of relevant physics and basis towards the ITER-like condition. |
| 资助项目 | National Key Research and Development Program of China[2017YFE0301100] ; National Key Research and Development Program of China[2017YFA0402500] ; National Natural Science Foundation of China[11605237] ; Users with Excellence Program of Hefei Science Center CAS[2020HSC-UE010] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | IOP:1009-0630-23-5-ABEC63 |
| 出版者 | IOP Publishing |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Users with Excellence Program of Hefei Science Center CAS |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/121866]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | YU,Yaowei |
| 作者单位 | 1.Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China 2.Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China 3.University of Science and Technology of China, Hefei 230026, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | WANG,Junru,YU,Yaowei,WANG,Houyin,et al. Study of the tungsten sputtering source suppression by wall conditionings in the EAST tokamak[J]. Plasma Science and Technology,2021,23. |
| APA | WANG,Junru,YU,Yaowei,WANG,Houyin,CAO,Bin,HU,Jiansheng,&XU,Wei.(2021).Study of the tungsten sputtering source suppression by wall conditionings in the EAST tokamak.Plasma Science and Technology,23. |
| MLA | WANG,Junru,et al."Study of the tungsten sputtering source suppression by wall conditionings in the EAST tokamak".Plasma Science and Technology 23(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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