Transport barriers in bootstrap-driven tokamaks
文献类型:期刊论文
作者 | Staebler, G. M.1; Garofalo, A. M.1; Pan, C.2; McClenaghan, J.1; Van Zeeland, M. A.1; Lao, L. L.1 |
刊名 | PHYSICS OF PLASMAS |
出版日期 | 2018-05-01 |
卷号 | 25期号:5页码:11 |
ISSN号 | 1070-664X |
DOI | 10.1063/1.5019282 |
通讯作者 | Staebler, G. M.(Gary.Staebler@gat.com) |
英文摘要 | Experiments have demonstrated improved energy confinement due to the spontaneous formation of an internal transport barrier in high bootstrap fraction discharges. Gyrokinetic analysis, and quasilinear predictive modeling, demonstrates that the observed transport barrier is caused by the suppression of turbulence primarily from the large Shafranov shift. It is shown that the Shafranov shift can produce a bifurcation to improved confinement in regions of positive magnetic shear or a continuous reduction in transport for weak or negative magnetic shear. Operation at high safety factor lowers the pressure gradient threshold for the Shafranov shift-driven barrier formation. Two self-organized states of the internal and edge transport barrier are observed. It is shown that these two states are controlled by the interaction of the bootstrap current with magnetic shear, and the kinetic ballooning mode instability boundary. Election scale energy transport is predicted to be dominant in the inner 60% of the profile. Evidence is presented that energetic particle-driven instabilities could be playing a role in the thermal energy transport in this region. Published by AIP Publishing. |
WOS关键词 | FLUID EQUATIONS ; DIII-D ; PLASMAS ; SOLVER ; SHEAR |
资助项目 | U.S. Department of Energy[DE-FG02-95ER54309] ; U.S. Department of Energy[DE-FC02-04ER54698] ; United States Government |
WOS研究方向 | Physics |
语种 | 英语 |
出版者 | AMER INST PHYSICS |
WOS记录号 | WOS:000433961800134 |
资助机构 | U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; U.S. Department of Energy ; United States Government ; United States Government ; United States Government ; United States Government ; 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源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/38179] |
专题 | 合肥物质科学研究院_中科院等离子体物理研究所 |
通讯作者 | Staebler, G. M. |
作者单位 | 1.Gen Atom, POB 85608, San Diego, CA 92168 USA 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China |
推荐引用方式 GB/T 7714 | Staebler, G. M.,Garofalo, A. M.,Pan, C.,et al. Transport barriers in bootstrap-driven tokamaks[J]. PHYSICS OF PLASMAS,2018,25(5):11. |
APA | Staebler, G. M.,Garofalo, A. M.,Pan, C.,McClenaghan, J.,Van Zeeland, M. A.,&Lao, L. L..(2018).Transport barriers in bootstrap-driven tokamaks.PHYSICS OF PLASMAS,25(5),11. |
MLA | Staebler, G. M.,et al."Transport barriers in bootstrap-driven tokamaks".PHYSICS OF PLASMAS 25.5(2018):11. |
入库方式: OAI收割
来源:合肥物质科学研究院
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