中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Progress in extending high poloidal beta scenarios on DIII-D towards a steady-state fusion reactor and impact of energetic particles

文献类型:期刊论文

AuthorHuang, J.1; Garofalo, A. M.2; Qian, J. P.1; Gong, X. Z.1; Ding, S. Y.1; Varela, J.3; Chen, J. L.1; Guo, W. F.1; Li, K.1; Wu, M. Q.4
SourceNUCLEAR FUSION
Issued Date2020-12-01
Volume60
Keywordtokamak steady state high bootstrap current energetic particle
ISSN0029-5515
DOI10.1088/1741-4326/abaf33
Corresponding AuthorHuang, J.(juan.huang@ipp.ac.cn)
English AbstractTo prepare for steady-state operation of future fusion reactors (e.g. the International Thermonuclear Experimental Reactor and China Fusion Engineering Test Reactor (CFETR)), experiments on DIII-D have extended the high poloidal beta (beta(P)) scenario to reactor-relevant edge safety factorq(95)similar to 6.0, while maintaining a large-radius internal transport barrier (ITB) using negative magnetic shear. Excellent energy confinement quality (H-98y2> 1.5) is sustained at high normalized beta (beta(N)similar to 3.5). This high-performance ITB state with Greenwald density fraction near 100% andq(min)>= 3 is achieved with toroidal plasma rotationV(tor)similar to 0 at rho >= 0.6. This is a key result for reactors expected to have lowV(tor). At high beta(P)(>= 1.9), large Shafranov shift can stabilize turbulence leading to a high confinement state with a low pedestal and an ITB. At lower beta(P)(<1.9), negative magnetic shear in the plasma core contributes to turbulence suppression and can compensate for reduced Shafranov shift to continue to access a large-radius ITB and excellent confinement with lowV(tor), consistent with the results of gyrofluid transport simulations. These high-beta(P)cases are characterized by weak/no Alfven eigenmodes (a.e.) and classical fast-ion transport. At high density, the fast-ion deceleration time decreases and Delta beta(fast)is lower; these reduce a.e. drive. The reverse-shear Alfven eigenmodes are weaker or stable because the negative magnetic shear region is located at higher radius, away from the peaked fast-ion profile. Resistive wall modes can be a limitation at simultaneous high beta(N), low internal inductance, and low rotation. Analysis suggests that additional off-axis external current drive could provide a more stable path at reducedq(95). Based on a DIII-D high-beta(P)plasma with large-radius ITB, two scenarios are proposed for CFETRQ= 5 steady-state operation with similar to 1 GW fusion power: a lower-li
Funding ProjectU.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences[DE-FC02-04ER54698] ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences[DE-AC52-07NA27344] ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences[DE-FG02-08ER54999] ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences[DE-AC05-00OR22725] ; U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences[DE-FG02-08ER54984] ; National Natural Science Foundation of China[11975276] ; Anhui Provincial Natural Science Foundation[2008085J04]
WOS KeywordALFVEN EIGENMODES
WOS Research AreaPhysics
Language英语
PublisherIOP PUBLISHING LTD
WOS IDWOS:000575503500001
Funding OrganizationU.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences ; National Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/104377]  
Collection中国科学院合肥物质科学研究院
Corresponding AuthorHuang, J.
Affiliation1.Chinese Acad Sci, Inst Plasma Phys, Hefei, Anhui, Peoples R China
2.Gen Atom, San Diego, CA USA
3.Univ Carlos III Madrid, Madrid 28911, Spain
4.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China
5.Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
6.Univ Wisconsin, Madison, WI USA
7.Univ Calif Los Angeles, Los Angeles, CA USA
8.Oak Ridge Associated Univ, Oak Ridge, TN USA
Recommended Citation
GB/T 7714
Huang, J.,Garofalo, A. M.,Qian, J. P.,et al. Progress in extending high poloidal beta scenarios on DIII-D towards a steady-state fusion reactor and impact of energetic particles[J]. NUCLEAR FUSION,2020,60.
APA Huang, J..,Garofalo, A. M..,Qian, J. P..,Gong, X. Z..,Ding, S. Y..,...&Yan, Z..(2020).Progress in extending high poloidal beta scenarios on DIII-D towards a steady-state fusion reactor and impact of energetic particles.NUCLEAR FUSION,60.
MLA Huang, J.,et al."Progress in extending high poloidal beta scenarios on DIII-D towards a steady-state fusion reactor and impact of energetic particles".NUCLEAR FUSION 60(2020).

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来源:合肥物质科学研究院

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