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Study of impurity effects on CFETR steady-state scenario by self-consistent integrated modeling
Shi, Nan1; Chan, Vincent S.2,4; Jian, Xiang3; Li, Guoqiang1; Chen, Jiale1; Gao, Xiang1; Shi, Shengyu2; Kong, Defeng1; Liu, Xiaoju1; Mao, Shifeng2; Xu, Guoliang2
2017-12-01
Source PublicationNUCLEAR FUSION
Volume57Issue:12
AbstractImpurity effects on fusion performance of China fusion engineering test reactor (CFETR) due to extrinsic seeding are investigated. An integrated 1.5D modeling workflow evolves plasma equilibrium and all transport channels to steady state. The one modeling framework for integrated tasks framework is used to couple the transport solver, MHD equilibrium solver, and source and sink calculations. A self-consistent impurity profile constructed using a steady-state background plasma, which satisfies quasi-neutrality and true steady state, is presented for the first time. Studies are performed based on an optimized fully non-inductive scenario with varying concentrations of Argon (Ar) seeding. It is found that fusion performance improves before dropping off with increasing Z(eff), while the confinement remains at high level. Further analysis of transport for these plasmas shows that low-k ion temperature gradient modes dominate the turbulence. The decrease in linear growth rate and resultant fluxes of all channels with increasing Z(eff) can be traced to impurity profile change by transport. The improvement in confinement levels off at higher Z(eff). Over the regime of study there is a competition between the suppressed transport and increasing radiation that leads to a peak in the fusion performance at Z(eff) (similar to 2.78 for CFETR). Extrinsic impurity seeding to control divertor heat load will need to be optimized around this value for best fusion performance.
SubtypeArticle
KeywordImpurity Effect Fusion Performance Integrated Modelling Cfetr
WOS HeadingsScience & Technology ; Physical Sciences
Funding OrganizationNational Magnetic Confinement Fusion Research Program of China(2014GB110001 ; National Magnetic Confinement Fusion Research Program of China(2014GB110001 ; National Magnetic Confinement Fusion Program of China(2014GB106000 ; National Magnetic Confinement Fusion Program of China(2014GB106000 ; National Nature Science Foundation of China(11675211) ; National Nature Science Foundation of China(11675211) ; 2014GB110002 ; 2014GB110002 ; 2014GB106001 ; 2014GB106001 ; 2014GB110003) ; 2014GB110003) ; 2014GB106003) ; 2014GB106003) ; National Magnetic Confinement Fusion Research Program of China(2014GB110001 ; National Magnetic Confinement Fusion Research Program of China(2014GB110001 ; National Magnetic Confinement Fusion Program of China(2014GB106000 ; National Magnetic Confinement Fusion Program of China(2014GB106000 ; National Nature Science Foundation of China(11675211) ; National Nature Science Foundation of China(11675211) ; 2014GB110002 ; 2014GB110002 ; 2014GB106001 ; 2014GB106001 ; 2014GB110003) ; 2014GB110003) ; 2014GB106003) ; 2014GB106003)
DOI10.1088/1741-4326/aa79d1
WOS KeywordRADIATIVELY IMPROVED MODE ; ETA-I MODE ; TOKAMAK ; PLASMA ; PARAMETERS ; TRANSPORT ; CONFINEMENT ; STABILITY ; CODE
Indexed BySCI
Language英语
Funding OrganizationNational Magnetic Confinement Fusion Research Program of China(2014GB110001 ; National Magnetic Confinement Fusion Research Program of China(2014GB110001 ; National Magnetic Confinement Fusion Program of China(2014GB106000 ; National Magnetic Confinement Fusion Program of China(2014GB106000 ; National Nature Science Foundation of China(11675211) ; National Nature Science Foundation of China(11675211) ; 2014GB110002 ; 2014GB110002 ; 2014GB106001 ; 2014GB106001 ; 2014GB110003) ; 2014GB110003) ; 2014GB106003) ; 2014GB106003) ; National Magnetic Confinement Fusion Research Program of China(2014GB110001 ; National Magnetic Confinement Fusion Research Program of China(2014GB110001 ; National Magnetic Confinement Fusion Program of China(2014GB106000 ; National Magnetic Confinement Fusion Program of China(2014GB106000 ; National Nature Science Foundation of China(11675211) ; National Nature Science Foundation of China(11675211) ; 2014GB110002 ; 2014GB110002 ; 2014GB106001 ; 2014GB106001 ; 2014GB110003) ; 2014GB110003) ; 2014GB106003) ; 2014GB106003)
WOS Research AreaPhysics
WOS SubjectPhysics, Fluids & Plasmas
WOS IDWOS:000412402000006
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/33708
Collection中科院等离子体物理研究所
Affiliation1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China
2.Univ Sci & Technol China, Sch Nucl Sci & Technol, Hefei 230026, Anhui, Peoples R China
3.Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Hubei, Peoples R China
4.Gen Atom, San Diego, CA 92121 USA
Recommended Citation
GB/T 7714
Shi, Nan,Chan, Vincent S.,Jian, Xiang,et al. Study of impurity effects on CFETR steady-state scenario by self-consistent integrated modeling[J]. NUCLEAR FUSION,2017,57(12).
APA Shi, Nan.,Chan, Vincent S..,Jian, Xiang.,Li, Guoqiang.,Chen, Jiale.,...&Xu, Guoliang.(2017).Study of impurity effects on CFETR steady-state scenario by self-consistent integrated modeling.NUCLEAR FUSION,57(12).
MLA Shi, Nan,et al."Study of impurity effects on CFETR steady-state scenario by self-consistent integrated modeling".NUCLEAR FUSION 57.12(2017).
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