Effects of radial transport on divertor power and particle flux widths under different operational regimes in EAST
文献类型：期刊论文
| 作者 | Deng, G. Z.1,2,3; Xu, X. Q.3; Liu, X. J.4; Xu, J. C.4; Meng, L. Y.4; Liu, J. B.4; Li, N. M.5; Schmitz, L.6; Gao, S. L.4; Yang, Q. Q.4 |
| 刊名 | NUCLEAR FUSION
 |
| 出版日期 | 2021-10-01 |
| 卷号 | 61 |
| ISSN号 | 0029-5515 |
| 关键词 | power flux width particle flux width EAST BOUT plus plus SOLPS |
| DOI | 10.1088/1741-4326/ac1546 |
| 通讯作者 | Gao, X.(xgao@ipp.ac.cn) ; Wang, L.(lwang@ipp.ac.cn) |
| 英文摘要 | A study of the effects of radial transport on the outer divertor particle and power flux widths (lambda ( js ) and lambda ( q )) is carried out using plasmas under different operational regimes in the Experimental Advanced Superconducting Tokamak (EAST). In the EAST experiments, the lambda ( js ) values measured during the grassy intra- and inter-ELM phases are similar, and the averaged value of lambda ( js ) during grassy ELMy discharges is found to be smaller than that of the intra-ELM phase of type-I ELMy discharges but larger than that of the inter-ELM phase of type-I ELMy discharges. Simulations of scans of the radial particle and heat transport coefficients, D and chi (e), performed using the BOUT++ transport code show that both lambda ( q ) and lambda ( js ) increase with D and chi (e), especially when D or chi (e) is larger than a threshold value, indicating that background turbulence starts to matter in the determination of lambda ( q ) and lambda ( js ) when D or chi (e) surpasses the threshold value. A comparison between the simulation of the D scan and the experimental results shows that the different values of lambda ( js ) obtained under different plasma operational regimes are probably due to the different intensities of background turbulence, which is beyond the scope of Goldston's heuristic drift-based model as reported by Goldston et al (2012 Nucl. Fusion 52 013009), since their model was derived by assuming that turbulent transport does not exceed a certain level. The ratio of lambda ( js ) to lambda ( q ) is greatly affected by the radial transport; however, simulations carried out using Scrape-off Layer Plasma Simulation (SOLPS) show that divertor geometry and plasma density have big influences on lambda ( js ), and thus could also affect the ratio of lambda ( js ) to lambda ( q ). |
| WOS关键词 | SCRAPE-OFF LAYER ; L-MODE ; SOL WIDTH ; HEAT ; PLASMAS ; SIMULATIONS |
| 资助项目 | National Natural Science Foundation of China[12175277] ; National Natural Science Foundation of China[11975271] ; National Natural Science Foundation of China[12075155] ; National Natural Science Foundation of China[12075283] ; National Natural Science Foundation of China[11922513] ; National Natural Science Foundation of China[11875294] ; National Natural Science Foundation of China[12005257] ; National Key Research and Development Program of China[2017YFE0300500] ; National Key Research and Development Program of China[2017YFE0301300] ; National Key Research and Development Program of China[2017YFA0402500] ; Shenzhen Clean Energy Research Institute ; China scholarship council[201706340070] ; U.S. Department of Energy via the Lawrence Livermore National Laboratory (LLNL)[DE-AC52-07NA27344] ; U.S. Department of Energy via the Lawrence Livermore National Laboratory (LLNL)[LLNL-JRNL-790439] ; AHNFS[1808085J07] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000694703900001 |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China ; Shenzhen Clean Energy Research Institute ; China scholarship council ; U.S. Department of Energy via the Lawrence Livermore National Laboratory (LLNL) ; AHNFS |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/125287]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Gao, X.; Wang, L. |
| 作者单位 | 1.Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China 2.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China 3.Lawrence Livermore Natl Lab, Livermore, CA 94550 USA 4.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 5.Dalian Univ Technol, Sch Phys, Dalian 116024, Peoples R China 6.Univ Calif Los Angeles, Los Angeles, CA 90095 USA |
| 推荐引用方式 GB/T 7714 | Deng, G. Z.,Xu, X. Q.,Liu, X. J.,et al. Effects of radial transport on divertor power and particle flux widths under different operational regimes in EAST[J]. NUCLEAR FUSION,2021,61. |
| APA | Deng, G. Z..,Xu, X. Q..,Liu, X. J..,Xu, J. C..,Meng, L. Y..,...&Wang, L..(2021).Effects of radial transport on divertor power and particle flux widths under different operational regimes in EAST.NUCLEAR FUSION,61. |
| MLA | Deng, G. Z.,et al."Effects of radial transport on divertor power and particle flux widths under different operational regimes in EAST".NUCLEAR FUSION 61(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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