Understanding core heavy impurity transport in a hybrid discharge on EAST
文献类型：期刊论文
| 作者 | Shi, Shengyu4,5; Chen, Jiale4 ; Bourdelle, Clarisse3; Jian, Xiang1,2; Odstrcil, Tomas1; Garofalo, Andrea M.1; Cheng, Yunxin4; Chao, Yan4; Zhang, Ling4; Duan, Yanmin4
|
| 刊名 | NUCLEAR FUSION
 |
| 出版日期 | 2022-06-01 |
| 卷号 | 62 |
| ISSN号 | 0029-5515 |
| 关键词 | EAST hybrid scenario heavy high-Z impurity W accumulation neoclassical and turbulent transport of W |
| DOI | 10.1088/1741-4326/ac3e3b |
| 通讯作者 | Chen, Jiale(chen@ipp.ac.cn) ; Bourdelle, Clarisse(Clarisse.BOURDELLE@cea.fr) |
| 英文摘要 | The behavior of heavy/high-Z impurity tungsten (W) in the core of hybrid (high normalized beta beta (N) plasmas) scenario on EAST with international thermonuclear experimental reactor-like divertor is analyzed. W accumulation is often observed and seriously degrades the plasma performance (Gao et al 2017 Nucl. Fusion 57 056021). The dynamics of the W accumulation process of a hybrid discharge are examined considering the concurrent evolution of the background plasma parameters. It is found that the toroidal rotation and density peaking of the bulk plasma are usually large in the central region, which is particularly prone to the W accumulation. A time slice during the W accumulation phase is modeled, accounting for both neoclassical and turbulent transport components of W, through NEO with poloidal asymmetry effects induced by toroidal rotation, and TGLF, respectively. This modeling reproduces the experimental observations of W accumulation and identifies the neoclassical inward convection/pinch velocity of W due to the large density peaking of the bulk plasma and toroidal rotation in the central region as one of the main reasons for the W accumulation. In addition, the NEO + TGLF + STRAHL modeling can not only predict the core W density profile but also closely reconstruct the radiated information mainly produced by W in the experiment. |
| WOS关键词 | HIGH-PERFORMANCE DISCHARGES ; ADVANCED SCENARIOS ; ASDEX ; TUNGSTEN ; PROFILE ; JET ; ACCUMULATION |
| 资助项目 | National Nature Science Foundation of China[12175277] ; National Nature Science Foundation of China[11975271] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | IOP Publishing Ltd |
| WOS记录号 | WOS:000783981900001 |
| 资助机构 | National Nature Science Foundation of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/128503]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Chen, Jiale; Bourdelle, Clarisse |
| 作者单位 | 1.Gen Atom, POB 85608, San Diego, CA 92186 USA 2.Univ Calif San Diego, Ctr Energy Res, La Jolla, CA 92093 USA 3.IRFM, CEA, F-13108 St Paul Les Durance, France 4.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 5.Univ Sci & Technol China, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Shengyu,Chen, Jiale,Bourdelle, Clarisse,et al. Understanding core heavy impurity transport in a hybrid discharge on EAST[J]. NUCLEAR FUSION,2022,62. |
| APA | Shi, Shengyu.,Chen, Jiale.,Bourdelle, Clarisse.,Jian, Xiang.,Odstrcil, Tomas.,...&Gao, Xiang.(2022).Understanding core heavy impurity transport in a hybrid discharge on EAST.NUCLEAR FUSION,62. |
| MLA | Shi, Shengyu,et al."Understanding core heavy impurity transport in a hybrid discharge on EAST".NUCLEAR FUSION 62(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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