The erosion of tungsten divertor on EAST during neon impurity seeding in different divertor operation regimes
文献类型：期刊论文
| 作者 | Zhao, Xuele1; Sang, Chaofeng1; Zhou, Qingrui1; Zhang, Chen1; Zhang, Yanjie1; Ding, Rui2 ; Ding, Fang2; Wang, Dezhen1
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| 刊名 | PLASMA PHYSICS AND CONTROLLED FUSION
 |
| 出版日期 | 2020-05-01 |
| 卷号 | 62 |
| ISSN号 | 0741-3335 |
| 关键词 | tokamak tungsten divertor neon seeding erosion |
| DOI | 10.1088/1361-6587/ab831b |
| 通讯作者 | Sang, Chaofeng(sang@dlut.edu.cn) |
| 英文摘要 | The external Ne impurity seeding has been applied to reduce the heat flux to the divertor target as well as plasma temperature to prolong the lifetime of the EAST upper tungsten (W) target. The erosion of the W target during the Ne seeding in different divertor operation regimes has been assessed by using the semi-empirical formula, while the plasma background was provided by SOLPS modeling. The simulation results showed that the Ne impurity played a critical role in the W erosion, which depended strongly on the operation regimes. By increasing the Ne seeding rate, the discharge regime was varied from the attached to detached condition. During the attached regime, the insufficient seeded Ne impurity could reduce the heat flux to the target, but the erosion of the W target was obviously enhanced, which may shorten the target lifetime. By the sufficient impurity seeding, the detached condition could be achieved, and the W target erosion was obviously suppressed. The high-power discharge brings great challenge to the W target lifetime, and the erosion is mainly induced by Ne and D ions. The contribution of each species changes greatly with different Ne seeding rates. In addition, the lifetime of the EAST upper W divertor has also been evaluated in different operation regimes during high input power discharge. |
| WOS关键词 | ASDEX UPGRADE ; PLASMA EDGE ; H-MODE ; SIMULATION ; DEPOSITION ; RADIATION ; TRANSPORT ; SCENARIOS ; SOL |
| 资助项目 | National Key R&D Program of China[2017YFA0402500] ; National Key R&D Program of China[2017YFE0301206] ; National Key R&D Program of China[2018YFE0301101] ; National Key R&D Program of China[2017YFE0300402] ; National Key R&D Program of China[2017YFE0300501] ; National Natural Science Foundation of China[11775044] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000529184100001 |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/103443]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Sang, Chaofeng |
| 作者单位 | 1.Dalian Univ Technol, Sch Phys, Dalian 116024, Peoples R China 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Xuele,Sang, Chaofeng,Zhou, Qingrui,et al. The erosion of tungsten divertor on EAST during neon impurity seeding in different divertor operation regimes[J]. PLASMA PHYSICS AND CONTROLLED FUSION,2020,62. |
| APA | Zhao, Xuele.,Sang, Chaofeng.,Zhou, Qingrui.,Zhang, Chen.,Zhang, Yanjie.,...&Wang, Dezhen.(2020).The erosion of tungsten divertor on EAST during neon impurity seeding in different divertor operation regimes.PLASMA PHYSICS AND CONTROLLED FUSION,62. |
| MLA | Zhao, Xuele,et al."The erosion of tungsten divertor on EAST during neon impurity seeding in different divertor operation regimes".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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