ELMs filaments extraction on divertor visible high-speed camera system of EAST | |
Yan, Hailong1,2; Han, Xiaofeng1; Yang, Jianhua1; Hu, Jiahui1; Wang, Jichao1,2 | |
刊名 | JOURNAL OF INSTRUMENTATION |
2022-10-01 | |
卷号 | 17 |
关键词 | Plasma diagnostics-high speed photography Data processing methods Pattern recognition cluster finding calibration and fitting methods |
ISSN号 | 1748-0221 |
DOI | 10.1088/1748-0221/17/10/P10016 |
通讯作者 | Han, Xiaofeng(hxf@ipp.ac.cn) |
英文摘要 | In order to study the ELMs filamentary structure generated by plasma in H-mode, a tangential visible camera system was established on EAST Tokamak. However, the obtained ELMs filamentary structure cannot be accurately and quickly identified, which is not conducive to the study of ELMs filamentary structure. In this paper, the ELMs filamentary structure is preliminarily extracted by the background subtraction method. The background modeling method adopts multi-frame averaging followed by contrast stretching of the image. Although the ELMs filamentary structure can be clearly seen in the obtained image, there exists a lot of noise, so further extraction of the ELMs filamentary structure is needed. In this paper, the neural network model U-Net is used for image segmentation. Compared with the traditional threshold segmentation, the ELMs filamentary structure and noise can be accurately distinguished, and ELMs filaments are better extracted. The results show that the method presented in this paper is suitable for the extraction of ELMs filamentary structure and beneficial to the study of ELMs filamentary structure. |
资助项目 | National Natural Science Foundation of China[12075281] ; projects of collaborative innovation of the Hefei Science Center, CAS[2021HSC-CIP007] ; National Magnetic Confinement Fusion Research Program of China[2017YFE0301104] |
WOS研究方向 | Instruments & Instrumentation |
语种 | 英语 |
出版者 | IOP Publishing Ltd |
WOS记录号 | WOS:000869716000008 |
资助机构 | National Natural Science Foundation of China ; projects of collaborative innovation of the Hefei Science Center, CAS ; National Magnetic Confinement Fusion Research Program of China |
内容类型 | 期刊论文 |
源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/129883] |
专题 | 中国科学院合肥物质科学研究院 |
通讯作者 | Han, Xiaofeng |
作者单位 | 1.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei 230026, Peoples R China |
推荐引用方式 GB/T 7714 | Yan, Hailong,Han, Xiaofeng,Yang, Jianhua,et al. ELMs filaments extraction on divertor visible high-speed camera system of EAST[J]. JOURNAL OF INSTRUMENTATION,2022,17. |
APA | Yan, Hailong,Han, Xiaofeng,Yang, Jianhua,Hu, Jiahui,&Wang, Jichao.(2022).ELMs filaments extraction on divertor visible high-speed camera system of EAST.JOURNAL OF INSTRUMENTATION,17. |
MLA | Yan, Hailong,et al."ELMs filaments extraction on divertor visible high-speed camera system of EAST".JOURNAL OF INSTRUMENTATION 17(2022). |
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