First realization of LHW-plasma coupling feedback control for long-pulse operation in EAST
文献类型：期刊论文
| 作者 | Ding, B. J.3 ; Yan, G. H.2,3; Yuan, Q. P.3; Li, Y. C.1; Wu, C. B.3; Wu, J. H.3; Cao, B.3; Yang, J. H.2,3; Li, M. H.3; Wang, M.3
|
| 刊名 | NUCLEAR FUSION
 |
| 出版日期 | 2024-07-01 |
| 卷号 | 64 |
| 关键词 | lower hybrid current drive LHW-plasma coupling feedback control tokamak gas fueling |
| ISSN号 | 0029-5515 |
| DOI | 10.1088/1741-4326/ad4806 |
| 通讯作者 | Ding, B. J.(bjding@ipp.ac.cn) ; Li, Y. C.(ycunli@gmail.com) |
| 英文摘要 | To sustain good lower hybrid wave (LHW)-plasma coupling for long-pulse plasma operation, for the first time, coupling feedback control is designed and realized in EAST using a proportion integration differentiation method by choosing the reflection coefficient (RC) of LHW power as the reference for gas-puffing feedback, and including one pulse test and multi-pulse experiments. Experiments show that such feedback control can work correctly and maintains good LHW-plasma coupling effectively for a long time, suggesting the possibility of feedback control application on LHW-plasma coupling in long-pulse plasma. Furthermore, during the feedback control process of multi-pulse supersonic molecular beam injection (SMBI), the stored energy changes from 29 kJ to 58 kJ, and the energy confinement factor (H 89) increases from 0.98 to 1.45, implying a positive effect of coupling feedback on plasma performance. Experiments between SMBI puffing and the gas puffing system, fed by a piezoelectric valve near the antenna, are further investigated, showing that the response time of the RC with SMBI is faster than that by the piezoelectric valve. In addition, SMBI puffing on the electron-drift side of the LHW antenna is a little quicker than that on the ion-drift side. Studies suggest that such feedback control is effective for long-pulse LHW-plasma coupling, and the gas puffing by SMBI on the electron-drift side of the LHW antenna could offer an effective way to sustain good LHW coupling in steady-state operation in the future. Further optimization will be continued at a later date. |
| 资助项目 | the National Natural Science Foundation of China[11975266] ; the National Natural Science Foundation of China[12305253] ; National Natural Science Foundation of China[YZJJ2023QN24] ; CAS HFIPS Director's Fund |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001248856900001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | the National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS HFIPS Director's Fund |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/136418]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Ding, B. J.; Li, Y. C. |
| 作者单位 | 1.Chaohu Univ, Sch Elect Engn, Hefei 238000, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ding, B. J.,Yan, G. H.,Yuan, Q. P.,et al. First realization of LHW-plasma coupling feedback control for long-pulse operation in EAST[J]. NUCLEAR FUSION,2024,64. |
| APA | Ding, B. J..,Yan, G. H..,Yuan, Q. P..,Li, Y. C..,Wu, C. B..,...&Gong, X. Z..(2024).First realization of LHW-plasma coupling feedback control for long-pulse operation in EAST.NUCLEAR FUSION,64. |
| MLA | Ding, B. J.,et al."First realization of LHW-plasma coupling feedback control for long-pulse operation in EAST".NUCLEAR FUSION 64(2024). |
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。