Simulation study of the influence of the outer target geometry on tungsten contamination: Horizontal vs. vertical target
文献类型：期刊论文
| 作者 | Ding, Hongxin2; Guo, Jin1; Mao, Shifeng2; Ruan, Xinglei2; Xu, Yuchen2; Ye, Minyou2 |
| 刊名 | NUCLEAR MATERIALS AND ENERGY
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 41 |
| 关键词 | Tungsten Divertor geometry Impurity transport SOLPS-ITER DIVIMP |
| DOI | 10.1016/j.nme.2024.101754 |
| 通讯作者 | Mao, Shifeng(sfmao@ustc.edu.cn) ; Ye, Minyou(yemy@ustc.edu.cn) |
| 英文摘要 | The core tungsten (W) concentration must be limited to an extremely low level for future fusion reactors. It was found that the effects of E x B drift can lead to a dramatic increase in the core W concentration in our recent work [J. Guo et al., Nucl. Fusion 63 (2023) 126033], in which the simulation study is performed for the divertor geometry with both inner and outer vertical targets. In this work, the influence of the outer target geometry is further investigated by numerical simulations under the direction of toroidal field BT favorable for H-mode access based on a typical EAST upper single-null configuration with two different outer target geometries, i.e. horizontal target (HT) and vertical target (VT). The background plasmas are simulated using SOLPS-ITER, and the W transport is simulated separately using DIVIMP. For the HT case, it is found that detachment in the outer divertor is promoted relative to the VT case, which leads to the suppression of W sputtering flux from the outer target. In contrast, the W sputtering flux from the outer target dominates for the VT case. The plasma profiles are similar for both cases at the inner vertical target, where detachment is achieved due to the drift effects under favorable BT except for the region near the inner strike point. Because the plasma detaches across most of the inner and outer target, the upstream W flux is significantly reduced for the HT case, and the core W concentration is about 2 orders of magnitude lower compared to the VT case. According to the analysis of the W transport for the HT case, two leakage pathways through the inner and outer scrap-off layer near the separatrix are indicated for the W impurities sputtered near the inner strike point. |
| WOS关键词 | INTEGRATION DESIGN PLATFORM ; TRANSPORT ; DRIFTS ; EDGE |
| 资助项目 | National MCF Energy R & D Program of China[2019YFE03080500] ; National MCF Energy R & D Program of China[2019YFE03030004] ; National MCF Energy R & D Program of China[2019YFE03020002] ; National Natural Science Foundation of China[U2267208] ; National Natural Science Foundation of China[11975232] ; Postdoctoral Fellowship Program of CPSF[GZC20232720] ; Collaborative Innovation Program of Hefei Science Center, CAS[2022HSC-CIP010] ; Supercomputing Center of University of Science and Technology of China |
| WOS研究方向 | Nuclear Science & Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:001334648700001 |
| 出版者 | ELSEVIER |
| 资助机构 | National MCF Energy R & D Program of China ; National Natural Science Foundation of China ; Postdoctoral Fellowship Program of CPSF ; Collaborative Innovation Program of Hefei Science Center, CAS ; Supercomputing Center of University of Science and Technology of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/134621]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Mao, Shifeng; Ye, Minyou |
| 作者单位 | 1.Chinese Acad Sci, Inst Plasma Phys, 350 Shushanhu Rd, Hefei 230031, Anhui, Peoples R China 2.Univ Sci & Technol China, Sch Nucl Sci & Technol, 96 JinZhai Rd, Hefei 230026, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ding, Hongxin,Guo, Jin,Mao, Shifeng,et al. Simulation study of the influence of the outer target geometry on tungsten contamination: Horizontal vs. vertical target[J]. NUCLEAR MATERIALS AND ENERGY,2024,41. |
| APA | Ding, Hongxin,Guo, Jin,Mao, Shifeng,Ruan, Xinglei,Xu, Yuchen,&Ye, Minyou.(2024).Simulation study of the influence of the outer target geometry on tungsten contamination: Horizontal vs. vertical target.NUCLEAR MATERIALS AND ENERGY,41. |
| MLA | Ding, Hongxin,et al."Simulation study of the influence of the outer target geometry on tungsten contamination: Horizontal vs. vertical target".NUCLEAR MATERIALS AND ENERGY 41(2024). |
入库方式： OAI收割
来源：合肥物质科学研究院
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