Prediction of high-performance scenario with localized magnetic shear reversal on EAST tokamak
文献类型：期刊论文
| 作者 | Zhang, X. X.1,2; Wu, M. Q.3; Li, G. Q.1 ; Ding, S. Y.1; Liu, X. J.1; Qian, J. P.1; Gong, X. Z.1; Gao, X.1,3; Gao, S. L.1,2; Wu, X. H.1,2
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| 刊名 | PLASMA PHYSICS AND CONTROLLED FUSION
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| 出版日期 | 2021-06-01 |
| 卷号 | 63 |
| ISSN号 | 0741-3335 |
| 关键词 | integrated modeling reversed-shear ITB high-performance |
| DOI | 10.1088/1361-6587/abf541 |
| 通讯作者 | Wu, M. Q.(wumuquan@szu.edu.cn) ; Li, G. Q.(ligq@ipp.ac.cn) |
| 英文摘要 | An advanced scenario with high poloidal beta, large-radius internal transport barriers (ITBs) and localized reversed-shear q-profile, has been demonstrated in DIII-D/EAST joint experiments recently on the DIII-D tokamak. This scenario is also one of the future explorations on EAST. In this article, integrated modeling has been utilized to explore the regime with localized reversed-shear q-profile and high performance based on the developed long-pulse scenario on EAST. A scenario with a strong reversed-shear q-profile has been achieved with the combination of 2 MW off-axis ECH, 2.6 MW LHW and 2 MW NBI (H-98y2 similar to 1.35, beta(P) similar to 2.56, beta(N) similar to 2.23, f(bs) similar to 56%). In addition, a small amount (similar to 0.1 MW) of centrally deposited ECH facilitates the generation of the bootstrap current on or near the axis, and hence reduces the level of the q-profile in this region; thus, a scenario with localized magnetic shear reversal and strong large-radius ITBs is obtained (H-98y2 similar to 1.4, beta(P) similar to 2.66, beta(N) similar to 2.31, f(bs) similar to 60%). Modeling predictions indicate that off-axis ECH/LHW and high plasma density promote the formation of large-radius ITBs. A further increase in the injected power of centrally deposited ECH (0.15 MW) or NBI (4 MW) leads to an increase in the temperature gradient, especially the electron temperature near the axis, and large-radius ITBs disappear in all channels (T-e, T-i, n(e)); also, the confinement quality decreases. The bootstrap current density profiles and LHW-driven current profiles tend to peak near the axis due to the increase in electron temperature profiles, which eventually leads to peaked total current profiles, similar to the EAST long-pulse scenario. Changes in magnetic shear result in the disappearance of large-radius ITBs. Modeling validation will be carried out in the near future on the EAST tokamak. |
| WOS关键词 | CURRENT DRIVE ; CONFINEMENT ; SUSTAINMENT ; PLASMAS |
| 资助项目 | National Key R&D Program of China[2017YFE0300404] ; National Key R&D Program of China[2019YFE03040004] ; Comprehensive Research Facility for Fusion Technology Program of China[2018-000052-73-01-001228] ; National Nature Science Foundation of China[11905145] ; Shenzhen Clean Energy Research Institute |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000649096800001 |
| 资助机构 | National Key R&D Program of China ; Comprehensive Research Facility for Fusion Technology Program of China ; National Nature Science Foundation of China ; Shenzhen Clean Energy Research Institute |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/122080]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Wu, M. Q.; Li, G. Q. |
| 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 3.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, X. X.,Wu, M. Q.,Li, G. Q.,et al. Prediction of high-performance scenario with localized magnetic shear reversal on EAST tokamak[J]. PLASMA PHYSICS AND CONTROLLED FUSION,2021,63. |
| APA | Zhang, X. X..,Wu, M. Q..,Li, G. Q..,Ding, S. Y..,Liu, X. J..,...&Li, K..(2021).Prediction of high-performance scenario with localized magnetic shear reversal on EAST tokamak.PLASMA PHYSICS AND CONTROLLED FUSION,63. |
| MLA | Zhang, X. X.,et al."Prediction of high-performance scenario with localized magnetic shear reversal on EAST tokamak".PLASMA PHYSICS AND CONTROLLED FUSION 63(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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