Divertor tungsten source monitoring by A visible spectroscopy diagnostic on EAST
EAST has been upgraded with top and bottom tungsten divertors to facilitate the high power long pulse operation. A visible spectroscopy diagnostic has been developed progressively to monitor W source as well as line emissions from other particles (e.g., D, He, Li, B, C, N, O, Ne, Ar, Mo, D2, WD) in...
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Elsevier
2024-12-01
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| Series: | Nuclear Materials and Energy |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179124001935 |
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| author | Fang Ding Qing Zhang Zhenhua Hu Bingcheng Qi Lingyi Meng Rui Ding Liang Wang Chenyuan Zhang Zhongshi Yang Haishan Zhou Youwen Sun Guang-nan Luo Jiansheng Hu |
| author_facet | Fang Ding Qing Zhang Zhenhua Hu Bingcheng Qi Lingyi Meng Rui Ding Liang Wang Chenyuan Zhang Zhongshi Yang Haishan Zhou Youwen Sun Guang-nan Luo Jiansheng Hu |
| author_sort | Fang Ding |
| collection | DOAJ |
| description | EAST has been upgraded with top and bottom tungsten divertors to facilitate the high power long pulse operation. A visible spectroscopy diagnostic has been developed progressively to monitor W source as well as line emissions from other particles (e.g., D, He, Li, B, C, N, O, Ne, Ar, Mo, D2, WD) in the divertors. Two sets of lens installed in mid-plane port view tangentially the top and bottom divertors, respectively. Two types of optical fibers transfer the plasma light collected by the lens to three different detecting modules. High spectral resolution (λ/Δλ ∼ 14000) can be achieved by the detecting module consisting of spectrometer and Electron-Multiplying Charge Coupled Device (EMCCD), high temporal resolution (50 μs) is obtained by filtered photoelectric multiplier (PMT), and high spatial resolution (1 mm) is acquired by Complementary Metal-Oxide-Semiconductor Transistor (CMOS) camera with collimation optics. The multichannel optical fiber array with 500 μm core diameter is used to connect the lens and the first two detecting modules. The imaging fiber bundle with 30 μm core diameter transmits the two-dimensional divertor plasma light to the third detecting module, i.e. collimation optics and CMOS camera. The diagnostic is operated automatically in normal EAST discharges to support experimental operation and divertor physics study. The paper presents a technical description of the diagnostic and typical measurements during EAST discharges. |
| format | Article |
| id | doaj-art-3d30a6b9e2e3466c8e5b9c4bb14c7ab0 |
| institution | DOAJ |
| issn | 2352-1791 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj-art-3d30a6b9e2e3466c8e5b9c4bb14c7ab02025-08-20T02:40:11ZengElsevierNuclear Materials and Energy2352-17912024-12-014110177010.1016/j.nme.2024.101770Divertor tungsten source monitoring by A visible spectroscopy diagnostic on EASTFang Ding0Qing Zhang1Zhenhua Hu2Bingcheng Qi3Lingyi Meng4Rui Ding5Liang Wang6Chenyuan Zhang7Zhongshi Yang8Haishan Zhou9Youwen Sun10Guang-nan Luo11Jiansheng Hu12Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, ChinaInstitute of Plasma Physics, HFIPS, Chinese Academy of Sciences, ChinaInstitute of Plasma Physics, HFIPS, Chinese Academy of Sciences, ChinaInstitute of Plasma Physics, HFIPS, Chinese Academy of Sciences, ChinaInstitute of Plasma Physics, HFIPS, Chinese Academy of Sciences, ChinaInstitute of Plasma Physics, HFIPS, Chinese Academy of Sciences, ChinaInstitute of Plasma Physics, HFIPS, Chinese Academy of Sciences, ChinaInstitute of Plasma Physics, HFIPS, Chinese Academy of Sciences, ChinaInstitute of Plasma Physics, HFIPS, Chinese Academy of Sciences, ChinaCorresponding authors.; Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, ChinaInstitute of Plasma Physics, HFIPS, Chinese Academy of Sciences, ChinaCorresponding authors.; Institute of Plasma Physics, HFIPS, Chinese Academy of Sciences, ChinaInstitute of Plasma Physics, HFIPS, Chinese Academy of Sciences, ChinaEAST has been upgraded with top and bottom tungsten divertors to facilitate the high power long pulse operation. A visible spectroscopy diagnostic has been developed progressively to monitor W source as well as line emissions from other particles (e.g., D, He, Li, B, C, N, O, Ne, Ar, Mo, D2, WD) in the divertors. Two sets of lens installed in mid-plane port view tangentially the top and bottom divertors, respectively. Two types of optical fibers transfer the plasma light collected by the lens to three different detecting modules. High spectral resolution (λ/Δλ ∼ 14000) can be achieved by the detecting module consisting of spectrometer and Electron-Multiplying Charge Coupled Device (EMCCD), high temporal resolution (50 μs) is obtained by filtered photoelectric multiplier (PMT), and high spatial resolution (1 mm) is acquired by Complementary Metal-Oxide-Semiconductor Transistor (CMOS) camera with collimation optics. The multichannel optical fiber array with 500 μm core diameter is used to connect the lens and the first two detecting modules. The imaging fiber bundle with 30 μm core diameter transmits the two-dimensional divertor plasma light to the third detecting module, i.e. collimation optics and CMOS camera. The diagnostic is operated automatically in normal EAST discharges to support experimental operation and divertor physics study. The paper presents a technical description of the diagnostic and typical measurements during EAST discharges.http://www.sciencedirect.com/science/article/pii/S2352179124001935Tungsten sourceSputteringDivertorSpectroscopyEAST |
| spellingShingle | Fang Ding Qing Zhang Zhenhua Hu Bingcheng Qi Lingyi Meng Rui Ding Liang Wang Chenyuan Zhang Zhongshi Yang Haishan Zhou Youwen Sun Guang-nan Luo Jiansheng Hu Divertor tungsten source monitoring by A visible spectroscopy diagnostic on EAST Nuclear Materials and Energy Tungsten source Sputtering Divertor Spectroscopy EAST |
| title | Divertor tungsten source monitoring by A visible spectroscopy diagnostic on EAST |
| title_full | Divertor tungsten source monitoring by A visible spectroscopy diagnostic on EAST |
| title_fullStr | Divertor tungsten source monitoring by A visible spectroscopy diagnostic on EAST |
| title_full_unstemmed | Divertor tungsten source monitoring by A visible spectroscopy diagnostic on EAST |
| title_short | Divertor tungsten source monitoring by A visible spectroscopy diagnostic on EAST |
| title_sort | divertor tungsten source monitoring by a visible spectroscopy diagnostic on east |
| topic | Tungsten source Sputtering Divertor Spectroscopy EAST |
| url | http://www.sciencedirect.com/science/article/pii/S2352179124001935 |
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