Achievements of actively controlled divertor detachment compatible with sustained high confinement core in DIII-D and EAST
文献类型：期刊论文
| 作者 | Wang, L.6 ; Wang, H. Q.5; Eldon, D.5; Yuan, Q. P.6; Ding, S.4,6; Li, K. D.6; Garofalo, A. M.5; Gong, X. Z.6; Xu, G. S.6; Guo, H. Y.5
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| 刊名 | NUCLEAR FUSION
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| 出版日期 | 2022-07-01 |
| 卷号 | 62 |
| ISSN号 | 0029-5515 |
| 关键词 | divertor detachment core-edge integration active control EAST DIII-D |
| DOI | 10.1088/1741-4326/ac4774 |
| 通讯作者 | Wang, L.(lwang@ipp.ac.cn) ; Wang, H. Q.(wanghuiyian@fusion.gat.com) |
| 英文摘要 | The compatibility of efficient divertor detachment with high-performance core plasma is vital to the development of magnetically controlled fusion energy. The joint research on the EAST and DIII-D tokamaks demonstrates successful integration of divertor detachment with excellent core plasma confinement quality, a milestone towards solving the critical plasma-wall-interaction (PWI) issue and core-edge integration for ITER and future reactors. In EAST, actively controlled partial detachment with T (et,div) similar to 5 eV around the strike point and H (98) > 1 in different H-mode scenarios including the high beta (P) H-mode scenario have been achieved with ITER-like tungsten divertor, by optimizing the detachment access condition and performing detailed experiments for core-edge integration. For active long-pulse detachment feedback control, a 30 s H-mode operation with detachment-control duration being 25 s has been successfully achieved in EAST. DIII-D has achieved actively controlled fully detached divertor with low plasma electron temperature (T (et,div) <= 5 eV across the entire divertor target) and low particle flux (degree of detachment, DoD > 3), simultaneously with very high core performance (beta (N) similar to 3, beta (P) > 2 and H (98) similar to 1.5) in the high beta(P) scenario being developed for ITER and future reactors. The high-beta (P) high confinement scenario is characterized by an internal transport barrier (ITB) at large radius and a weak edge transport barrier (ETB, or pedestal), which are synergistically self-organized. Both the high-beta (P) scenario and impurity seeding facilitate divertor detachment. The detachment access leads to the reduction of ETB, which facilitates the development of an even stronger ITB at large radius in the high beta (P) scenario. Thus, this strong large radius ITB enables the core confinement improvement during detachment. These significant joint DIII-D and EAST advances on the compatibility of high confinement core and detached divertor show a great potential for achieving a high-performance core plasma suitable for long-pulse operation of fusion reactors with controllable steady-state PWIs. |
| 资助项目 | National Magnetic Confinement Fusion Science Program of China[2017YFE0301300] ; National Magnetic Confinement Fusion Science Program of China[2017YFA0402500] ; National Magnetic Confinement Fusion Science Program of China[2017YFE0300404] ; National Magnetic Confinement Fusion Science Program of China[2019YFE03030000] ; National Natural Science Foundation of China[11922513] ; National Natural Science Foundation of China[11775264] ; US Department of Energy, Office of Science, Office of Fusion Energy Sciences[DE-FC02-04ER54698] ; US Department of Energy, Office of Science, Office of Fusion Energy Sciences[DE-AC04-94AL85000] ; US Department of Energy, Office of Science, Office of Fusion Energy Sciences[DE-NA0003525] ; US Department of Energy, Office of Science, Office of Fusion Energy Sciences[DE-AC52-07NA27344] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | IOP Publishing Ltd |
| WOS记录号 | WOS:000785594100001 |
| 资助机构 | National Magnetic Confinement Fusion Science Program of China ; National Natural Science Foundation of China ; US Department of Energy, Office of Science, Office of Fusion Energy Sciences |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/128483]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Wang, L.; Wang, H. Q. |
| 作者单位 | 1.Columbia Univ, Dept Appl Math & Appl Phys, New York, NY 10027 USA 2.Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA 3.Lawrence Livermore Natl Lab, Livermore, CA 94550 USA 4.Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA 5.Gen Atom, POB 85608, San Diego, CA 92186 USA 6.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 7.Sandia Natl Labs, POB 969, Livermore, CA 94551 USA |
| 推荐引用方式 GB/T 7714 | Wang, L.,Wang, H. Q.,Eldon, D.,et al. Achievements of actively controlled divertor detachment compatible with sustained high confinement core in DIII-D and EAST[J]. NUCLEAR FUSION,2022,62. |
| APA | Wang, L..,Wang, H. Q..,Eldon, D..,Yuan, Q. P..,Ding, S..,...&Li, J. G..(2022).Achievements of actively controlled divertor detachment compatible with sustained high confinement core in DIII-D and EAST.NUCLEAR FUSION,62. |
| MLA | Wang, L.,et al."Achievements of actively controlled divertor detachment compatible with sustained high confinement core in DIII-D and 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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