Effects of triangularity on the fusion performance of CFETR
文献类型：期刊论文
| 作者 | Zhou, Cheng-Xi2; Chen, Jia-Le3 ; Chan, V. S.1,4; Jian, Xiang5; Zhuang, G.4; Zhu, Yi-Ren2
|
| 刊名 | NUCLEAR FUSION
 |
| 出版日期 | 2020-09-01 |
| 卷号 | 60 |
| ISSN号 | 0029-5515 |
| 关键词 | triangularity turbulence collisionality reversed magnetic shear thermo-diffusion CFETR integrated modeling |
| DOI | 10.1088/1741-4326/aba450 |
| 通讯作者 | Chan, V. S.(chanvs@ustc.edu.cn) ; Zhuang, G.(gezhuang@ustc.edu.cn) |
| 英文摘要 | An important task of the China Fusion Engineering Test Reactor physics design is to develop operation scenarios with high fusion power (1 GW), high bootstrap current fraction for steady-state and a plasma edge compatible with heat and particle exhaust. To achieve these goals, triangularity (delta) effects on the fusion performance of two candidate scenarios, with or without reversed magnetic shear (RS), namely conventional H-mode and RS H-mode, are evaluated using core-edge coupled integrated modeling in this paper. For fixed pedestal density, it is shown that higher delta is favorable for higher fusion performance in the conventional H-mode scenario while the fusion performance decreases with increasing delta in the RS H-mode scenario. In conventional H-mode, the higher fusion performance at high delta mainly comes from a higher pedestal temperature as predicted by EPED in combination with stiff core kinetic profiles. In the RS H-mode scenario with a local reversed shear region, the profiles are non-stiff and a strong internal transport barrier (ITB) exists at low delta. This results in higher density and temperature inside the ITB for low delta, leading to higher fusion power. If the pedestal temperature is kept fixed, in both scenarios the significant increase in pedestal density, which extends into the core, dominates at high delta and leads to much higher fusion power. For conventional H-mode, destabilization from increasing delta is partially balanced by stabilization due to increasing nu*. Since the normalized heat sources are quite similar, it results in minimal changes in the temperature profiles except for the lowest density case. For RS H-mode, destabilization from increasing delta is approximately balanced by stabilization due to increasing nu* in foot region, but a strong temperature ITB is still evident for low delta. The ability to take advantage of the high pedestal density in conventional H-mode and reversed shear scenario depends on its compatibility with edge density requirements from efficient heat and particle exhaust. Transport analysis is presented to elucidate the roles of delta, collisionality and magnetic shear in altering the profiles and the ITB, which contribute to the different behavior in the two scenarios. |
| WOS关键词 | INTERNAL TRANSPORT BARRIER ; ELMY H-MODES ; ASPECT-RATIO ; CONFINEMENT ; DENSITY ; LIMITS |
| 资助项目 | National Magnetic Confinement Fusion Program of China[2017YFE0300500] ; National Magnetic Confinement Fusion Program of China[2017YFE0300501] ; US DOE Office of Fusion Energy Science[DE-SC0017992] ; NSFC[U1967206] ; NSFC[51821005] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000563251500001 |
| 资助机构 | National Magnetic Confinement Fusion Program of China ; US DOE Office of Fusion Energy Science ; NSFC |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/70613]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Chan, V. S.; Zhuang, G. |
| 作者单位 | 1.Gen Atom, POB 85608, San Diego, CA 92186 USA 2.Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Peoples R China 3.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 4.Univ Sci & Technol China, Sch Phys Sci, Dept Engn & Appl Phys, Hefei 230026, Peoples R China 5.Univ Calif San Diego, Ctr Energy Res, La Jolla, CA 92093 USA |
| 推荐引用方式 GB/T 7714 | Zhou, Cheng-Xi,Chen, Jia-Le,Chan, V. S.,et al. Effects of triangularity on the fusion performance of CFETR[J]. NUCLEAR FUSION,2020,60. |
| APA | Zhou, Cheng-Xi,Chen, Jia-Le,Chan, V. S.,Jian, Xiang,Zhuang, G.,&Zhu, Yi-Ren.(2020).Effects of triangularity on the fusion performance of CFETR.NUCLEAR FUSION,60. |
| MLA | Zhou, Cheng-Xi,et al."Effects of triangularity on the fusion performance of CFETR".NUCLEAR FUSION 60(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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