Quantitative analysis of impurities deposited on the Plasma-Facing Components of EAST tokamak using a portable LIBS device
In this work, the characterization of impurities deposited on the Plasma-Facing Components (PFCs) of the EAST tokamak, — including the tungsten upper and lower divertors (UD, LD), the molybdenum first wall on the high-field side (HFS), and the graphite main guard limiter (ML) — is reported using a p...
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| Format: | Article |
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Elsevier
2024-12-01
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| Series: | Nuclear Materials and Energy |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179124002084 |
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| author | Zhenhua Hu Xue Bai Huace Wu Ran Hai Fang Ding Muhammad Imran Cong Li Hongbin Ding Guang-Nan Luo |
| author_facet | Zhenhua Hu Xue Bai Huace Wu Ran Hai Fang Ding Muhammad Imran Cong Li Hongbin Ding Guang-Nan Luo |
| author_sort | Zhenhua Hu |
| collection | DOAJ |
| description | In this work, the characterization of impurities deposited on the Plasma-Facing Components (PFCs) of the EAST tokamak, — including the tungsten upper and lower divertors (UD, LD), the molybdenum first wall on the high-field side (HFS), and the graphite main guard limiter (ML) — is reported using a portable Laser-Induced Breakdown Spectroscopy (LIBS) device. The LIBS analysis revealed that the primary impurity elements deposited on the PFCs are Cu, W, Fe, Li, Mo, and Ca. Notably, significant amounts of Cu, W, Fe, Li, and Mo impurities were observed on the ML surface. On both the upper and lower divertors (UD, LD) surfaces, trace amounts of Cu and Fe impurities were detected. The results on HFS showed a low level of Cu, W, and Fe impurities on its surface. Additionally, the Calibration-Free LIBS (CF-LIBS) method was implemented to determine the relative content of impurities on the PFCs. The quantitative results of the deposited impurities on PFCs further provide a more detailed interpretation of the variations in impurity deposition. The successful in situ assessment of impurities deposited on the EAST tokamak using a portable LIBS device demonstrates the potential for integrating the LIBS system into a remote handling system. These results offer valuable insights into the dynamics of impurities in controlled fusion devices, which can contribute to enhancing impurity control methods and improving device performance. |
| format | Article |
| id | doaj-art-c50dbf00055d45e0bbf6858aa334fd4e |
| institution | DOAJ |
| issn | 2352-1791 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj-art-c50dbf00055d45e0bbf6858aa334fd4e2025-08-20T02:52:31ZengElsevierNuclear Materials and Energy2352-17912024-12-014110178510.1016/j.nme.2024.101785Quantitative analysis of impurities deposited on the Plasma-Facing Components of EAST tokamak using a portable LIBS deviceZhenhua Hu0Xue Bai1Huace Wu2Ran Hai3Fang Ding4Muhammad Imran5Cong Li6Hongbin Ding7Guang-Nan Luo8Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, ChinaDalian University of Technology, Dalian 116024, ChinaDalian University of Technology, Dalian 116024, ChinaDalian University of Technology, Dalian 116024, China; Corresponding authors.Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China; Corresponding authors.Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, ChinaDalian University of Technology, Dalian 116024, ChinaDalian University of Technology, Dalian 116024, ChinaInstitute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, ChinaIn this work, the characterization of impurities deposited on the Plasma-Facing Components (PFCs) of the EAST tokamak, — including the tungsten upper and lower divertors (UD, LD), the molybdenum first wall on the high-field side (HFS), and the graphite main guard limiter (ML) — is reported using a portable Laser-Induced Breakdown Spectroscopy (LIBS) device. The LIBS analysis revealed that the primary impurity elements deposited on the PFCs are Cu, W, Fe, Li, Mo, and Ca. Notably, significant amounts of Cu, W, Fe, Li, and Mo impurities were observed on the ML surface. On both the upper and lower divertors (UD, LD) surfaces, trace amounts of Cu and Fe impurities were detected. The results on HFS showed a low level of Cu, W, and Fe impurities on its surface. Additionally, the Calibration-Free LIBS (CF-LIBS) method was implemented to determine the relative content of impurities on the PFCs. The quantitative results of the deposited impurities on PFCs further provide a more detailed interpretation of the variations in impurity deposition. The successful in situ assessment of impurities deposited on the EAST tokamak using a portable LIBS device demonstrates the potential for integrating the LIBS system into a remote handling system. These results offer valuable insights into the dynamics of impurities in controlled fusion devices, which can contribute to enhancing impurity control methods and improving device performance.http://www.sciencedirect.com/science/article/pii/S2352179124002084 |
| spellingShingle | Zhenhua Hu Xue Bai Huace Wu Ran Hai Fang Ding Muhammad Imran Cong Li Hongbin Ding Guang-Nan Luo Quantitative analysis of impurities deposited on the Plasma-Facing Components of EAST tokamak using a portable LIBS device Nuclear Materials and Energy |
| title | Quantitative analysis of impurities deposited on the Plasma-Facing Components of EAST tokamak using a portable LIBS device |
| title_full | Quantitative analysis of impurities deposited on the Plasma-Facing Components of EAST tokamak using a portable LIBS device |
| title_fullStr | Quantitative analysis of impurities deposited on the Plasma-Facing Components of EAST tokamak using a portable LIBS device |
| title_full_unstemmed | Quantitative analysis of impurities deposited on the Plasma-Facing Components of EAST tokamak using a portable LIBS device |
| title_short | Quantitative analysis of impurities deposited on the Plasma-Facing Components of EAST tokamak using a portable LIBS device |
| title_sort | quantitative analysis of impurities deposited on the plasma facing components of east tokamak using a portable libs device |
| url | http://www.sciencedirect.com/science/article/pii/S2352179124002084 |
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