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Study of plasma current effect on divertor power footprint widths through experiments and modeling in EAST L-mode plasmas

文献类型：期刊论文

作者Deng, G. Z.1,2; Liu, X. J.1; Wang, L.1,3; Liu, S. C.1; Chen, L.1; Zhang, H.1; Xu, J. C.1; Feng, W.1; Liu, J. B.1; Liu, H.1
刊名PHYSICS OF PLASMAS
出版日期2017-04-01
卷号24期号:4
DOI10.1063/1.4979670
文献子类Article
英文摘要Integrated studies of the scaling of divertor power footprint widths with plasma current in Experimental Advanced Superconducting Tokamak (EAST) L-mode plasmas are carried out through experiments and modeling. The divertor power widths, which consist of the scrape-off layer power decay length lambda(q) and the heat spreading S, are calculated from the measurements of divertor Langmuir probes (div-LPs) and scrape-off layer plasma simulation (SOLPS). A strong inverse scaling of both lambda(q) (mm) and S (mm) from the div-LP with plasma current I-p (MA) is demonstrated, with the regressions being lambda(q) = 4.37I(p)(-1.04 +/- 0.075) and S = 2.31I(p)(-0.997 +/- 0.047). However, a much weaker inverse scaling of lambda(q) with I-p is shown by the measurement of outer mid-plane reciprocating probes, which gives lambda(q,RP) = 6.56I(p)(-0.31 +/- 0.056). It indicates that the connection length may have played a stronger role in the negative scaling of lambda(q) with I-p than radial transport. A similar conclusion can also be drawn from a comparison of the simulation of the plasma current scan with a set of fixed radial transport and another set of coefficient modified by I-p. This indicates that plasma configuration with a longer connection length is a better L-mode operational scenario for diverted tokamaks. Published by AIP Publishing.
WOS关键词HEAT-FLUX WIDTH ; SOL WIDTH ; ASDEX UPGRADE ; ITER ; PARTICLE ; TOKAMAK ; JET ; DISCHARGES ; B2-EIRENE ; TRANSPORT
WOS研究方向Physics
语种英语
WOS记录号WOS:000400390700051
资助机构National Natural Science Foundation of China(11405213 ; National Natural Science Foundation of China(11405213 ; National Natural Science Foundation of China(11405213 ; National Natural Science Foundation of China(11405213 ; National Natural Science Foundation of China(11405213 ; National Natural Science Foundation of China(11405213 ; National Natural Science Foundation of China(11405213 ; National Natural Science Foundation of China(11405213 ; National Natural Science Foundation of China(11405213 ; National Natural Science Foundation of China(11405213 ; National Natural Science Foundation of China(11405213 ; National Natural Science Foundation of China(11405213 ; National Natural Science Foundation of China(11405213 ; National Natural Science Foundation of China(11405213 ; National Natural Science Foundation of China(11405213 ; National Natural Science Foundation of China(11405213 ; National Magnetic Confinement Fusion Science Program of China(2014GB106005 ; National Magnetic Confinement Fusion Science Program of China(2014GB106005 ; 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源URL[http://ir.hfcas.ac.cn:8080/handle/334002/33484]  
专题合肥物质科学研究院_中科院等离子体物理研究所
作者单位1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
3.Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China
推荐引用方式
GB/T 7714		 Deng, G. Z.,Liu, X. J.,Wang, L.,et al. Study of plasma current effect on divertor power footprint widths through experiments and modeling in EAST L-mode plasmas[J]. PHYSICS OF PLASMAS,2017,24(4).
APA Deng, G. Z..,Liu, X. J..,Wang, L..,Liu, S. C..,Chen, L..,...&Gao, X..(2017).Study of plasma current effect on divertor power footprint widths through experiments and modeling in EAST L-mode plasmas.PHYSICS OF PLASMAS,24(4).
MLA Deng, G. Z.,et al."Study of plasma current effect on divertor power footprint widths through experiments and modeling in EAST L-mode plasmas".PHYSICS OF PLASMAS 24.4(2017).

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来源：合肥物质科学研究院

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