Experimental progress of hybrid operational scenario on EAST tokamak
文献类型：期刊论文
| 作者 | Gao, X.2,3 ; Zeng, L.3; Wu, M. Q.1,2; Zhang, T.3; Yang, Y.3; Ming, T. F.3; Zhu, X.1,2; Wang, Y. M.3; Liu, H. Q.3; Zang, Q.2,3
|
| 刊名 | NUCLEAR FUSION
 |
| 出版日期 | 2020-10-01 |
| 卷号 | 60 |
| ISSN号 | 0029-5515 |
| 关键词 | EAST high normalized beta fishbone power threshold |
| DOI | 10.1088/1741-4326/abaa91 |
| 通讯作者 | Wu, M. Q.(wumuquan@szu.edu.cn) |
| 英文摘要 | Extensive experiments of advanced scenario development, which contribute to the ITER hybrid operational scenario have been carried out on experimental advanced superconducting tokamak (EAST) tokamak recently with the ITER-like tungsten divertor. The beta(N) in this operational scenario is intermediate up to 2.1 (EAST#78987, beta(N) similar to 2.1, I-p similar to 0.45 MA, q(95) = 3.7, B-T similar to 1.5 T, 3 MW neutron beam injection and 1 MW 4.6 GHz lower hybrid wave). In these hybrid H-mode plasmas, the internal transport barrier (ITB) has been frequently observed with central flatqprofile and it is found that the fishbone mode (m/n= 1/1) can be beneficial to sustain the central flat (q(0) similar to 1)qprofile, thus a stable ITB can be obtained. In this case, better plasma performance is achieved. The formation of the ITB of the electron density is related to the fishbone activities. Energy transport analysis shows that the fishbone instabilities have a suppression on electron turbulent energy transport, while the ITB of ion temperature is due to the suppression of high-k modes (electron temperature gradient). The mechanism of turbulence suppression from fishbone instabilities in the EAST tokamak is not clear and needs more investigation. It is also observed that the power threshold for ITB formation is >= 3.5 MW, which is consistent with the scaling law for other tokamaks. The dimensionless parameter G (= H-89 beta(N)/q(95)(2)) obtained in the EAST reaches 0.3, but is still lower than the ITER hybrid scenario design (G >= 0.4) and needs more extension. Further investigation of extending the operational regimes, such as expanding the ITB foot outwards, would be important for the development of the hybrid and steady-state scenarios for next-step fusion devices like ITER and CFETR. |
| WOS关键词 | HIGH-PERFORMANCE DISCHARGES ; DIII-D ; HIGH CONFINEMENT ; STATIONARY ; TRANSPORT ; PLASMAS ; TURBULENCE ; FRACTION ; PHYSICS ; SHEAR |
| 资助项目 | National Nature Science Foundation of China[11975271] ; National Nature Science Foundation of China[11675211] ; National Nature Science Foundation of China[11905145] ; National Key R&D Program of China[2017YFE0301205] ; National Key R&D Program of China[2017YFE0300500] ; National Key R&D Program of China[2017YFE0300501] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000568352300001 |
| 资助机构 | National Nature Science Foundation of China ; National Key R&D Program of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/104042]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Wu, M. Q. |
| 作者单位 | 1.Shenzhen Univ, Coll Optoelect Engn, Key Lab Optoelect Devices & Syst, Minist Educ & Guangdong Prov, Shenzhen 518060, Peoples R China 2.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China 3.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, X.,Zeng, L.,Wu, M. Q.,et al. Experimental progress of hybrid operational scenario on EAST tokamak[J]. NUCLEAR FUSION,2020,60. |
| APA | Gao, X..,Zeng, L..,Wu, M. Q..,Zhang, T..,Yang, Y..,...&Wan, Y. X..(2020).Experimental progress of hybrid operational scenario on EAST tokamak.NUCLEAR FUSION,60. |
| MLA | Gao, X.,et al."Experimental progress of hybrid operational scenario on EAST tokamak".NUCLEAR FUSION 60(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。