Experimental investigation on divertor tungsten sputtering with neon seeding in ELMy H-mode plasma in EAST tokamak
文献类型：期刊论文
| 作者 | Ye, Dawei1,2; Ding, Fang1 ; Li, Kedong1,2; Hu, Zhenhua1; Zhang, Ling1; Chen, Xiahua1,2; Zhang, Qing1,2; Zhao, Pingan1,2; He, Tao1,2; Meng, Lingyi1,2
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| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2022-06-01 |
| 卷号 | 31 |
| ISSN号 | 1674-1056 |
| 关键词 | neon seeding tungsten sputtering ELM suppression EAST tokamak |
| DOI | 10.1088/1674-1056/ac4f58 |
| 通讯作者 | Ding, Fang(fding@ipp.ac.cn) |
| 英文摘要 | Neon (Ne) seeding is used to cool the edge plasma by radiation to protect the divertor tungsten (W) target in the Experimental Advanced Superconducting Tokamak (EAST). The W sputtering in the outer divertor target with Ne seeding is assessed by the divertor visible spectroscopy system. It is observed that the W sputtering flux initially increases with Ne concentration in the divertor despite the decreasing plasma temperature. After reaching a maximum around 25 eV, the W sputtering rate starts to decrease, presenting a suppression effect. The effect on the divertor W sputtering flux and yield due to the competition between the increase of the Ne concentration and the decrease of the plasma temperature is discussed. The results show that enough Ne seeding is essential to effectively reduce the electron temperature and thus to suppress W sputtering. Moreover, ELM suppression is observed when Ne and W impurities enter the core plasma, which could be correlated to the enhanced turbulence transport in the pedestal. |
| 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[12192283] ; National Natural Science Foundation of China[12022511] ; Users with Excellence Project of Hefei Science Center, CAS[2018HSC-UE008] ; CASHIPS Director's Fund[BJPY2019B01] ; JSPS-CAS Bilateral Joint Research Project[GJHZ201984] ; Key Research Program of Frontier Sciences of CAS[ZDBS-LY-SLH010] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | IOP Publishing Ltd |
| WOS记录号 | WOS:000809243000001 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Users with Excellence Project of Hefei Science Center, CAS ; CASHIPS Director's Fund ; JSPS-CAS Bilateral Joint Research Project ; Key Research Program of Frontier Sciences of CAS |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/131355]  |
| 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, HFIPS, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ye, Dawei,Ding, Fang,Li, Kedong,et al. Experimental investigation on divertor tungsten sputtering with neon seeding in ELMy H-mode plasma in EAST tokamak[J]. CHINESE PHYSICS B,2022,31. |
| APA | Ye, Dawei.,Ding, Fang.,Li, Kedong.,Hu, Zhenhua.,Zhang, Ling.,...&Luo, Guangnan.(2022).Experimental investigation on divertor tungsten sputtering with neon seeding in ELMy H-mode plasma in EAST tokamak.CHINESE PHYSICS B,31. |
| MLA | Ye, Dawei,et al."Experimental investigation on divertor tungsten sputtering with neon seeding in ELMy H-mode plasma in EAST tokamak".CHINESE PHYSICS B 31(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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