Fuel recycling control in long pulse operation with full tungsten divertors in EAST tokamak
Fuel recycling control in long pulse discharges is studied in EAST tokamak with tungsten divertors by particle balance. Double null configuration, proper Resonant Magnetic Perturbation (RMP), divertor cryopumps and realtime lithium injection, are all very effective for recycling control. High heatin...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Nuclear Materials and Energy |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352179122002149 |
| _version_ | 1811154391558782976 |
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| author | Yaowei Yu Deze Zhou Mizuki Sakamoto Bin Cao Guizhong Zuo Jiansheng Hu |
| author_facet | Yaowei Yu Deze Zhou Mizuki Sakamoto Bin Cao Guizhong Zuo Jiansheng Hu |
| author_sort | Yaowei Yu |
| collection | DOAJ |
| description | Fuel recycling control in long pulse discharges is studied in EAST tokamak with tungsten divertors by particle balance. Double null configuration, proper Resonant Magnetic Perturbation (RMP), divertor cryopumps and realtime lithium injection, are all very effective for recycling control. High heating power discharge leads to low recycling due to the enhancement of particle exhausting. High external gas injection is required in a low fuel recycling discharge to keep a constant density, and Dα emission is increased by external injection, therefore a higher Dα emission may indicate low fuel recycling for the same plasma density. Reproducible long pulse discharges of over 100 s with core electron temperature >10 keV, and 1056 s discharge with ∼1.5 MW heating power were obtained in the EAST 2021 campaign, fuel recycling was well controlled by divertor cryopumps and realtime lithium injection. The results provide a valuable reference for the high power and long pulse operation in future fusion reactors, such as ITER and CFETR. |
| first_indexed | 2024-04-10T04:14:47Z |
| format | Article |
| id | doaj.art-481ffdfa69854ff6a1be452617f0c80c |
| institution | Directory Open Access Journal |
| issn | 2352-1791 |
| language | English |
| last_indexed | 2024-04-10T04:14:47Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Nuclear Materials and Energy |
| spelling | doaj.art-481ffdfa69854ff6a1be452617f0c80c2023-03-12T04:21:20ZengElsevierNuclear Materials and Energy2352-17912023-03-0134101333Fuel recycling control in long pulse operation with full tungsten divertors in EAST tokamakYaowei Yu0Deze Zhou1Mizuki Sakamoto2Bin Cao3Guizhong Zuo4Jiansheng Hu5Institute of Plasma Physics, Hefei Institute of Physical Science, Chinese Academy of Sciences, China; Corresponding author.Institute of Plasma Physics, Hefei Institute of Physical Science, Chinese Academy of Sciences, ChinaPlasma Research Center, University of Tsukuba, JapanInstitute of Plasma Physics, Hefei Institute of Physical Science, Chinese Academy of Sciences, ChinaInstitute of Plasma Physics, Hefei Institute of Physical Science, Chinese Academy of Sciences, ChinaInstitute of Plasma Physics, Hefei Institute of Physical Science, Chinese Academy of Sciences, ChinaFuel recycling control in long pulse discharges is studied in EAST tokamak with tungsten divertors by particle balance. Double null configuration, proper Resonant Magnetic Perturbation (RMP), divertor cryopumps and realtime lithium injection, are all very effective for recycling control. High heating power discharge leads to low recycling due to the enhancement of particle exhausting. High external gas injection is required in a low fuel recycling discharge to keep a constant density, and Dα emission is increased by external injection, therefore a higher Dα emission may indicate low fuel recycling for the same plasma density. Reproducible long pulse discharges of over 100 s with core electron temperature >10 keV, and 1056 s discharge with ∼1.5 MW heating power were obtained in the EAST 2021 campaign, fuel recycling was well controlled by divertor cryopumps and realtime lithium injection. The results provide a valuable reference for the high power and long pulse operation in future fusion reactors, such as ITER and CFETR.http://www.sciencedirect.com/science/article/pii/S2352179122002149Fuel recyclingLong pulse operationEASTTokamak |
| spellingShingle | Yaowei Yu Deze Zhou Mizuki Sakamoto Bin Cao Guizhong Zuo Jiansheng Hu Fuel recycling control in long pulse operation with full tungsten divertors in EAST tokamak Nuclear Materials and Energy Fuel recycling Long pulse operation EAST Tokamak |
| title | Fuel recycling control in long pulse operation with full tungsten divertors in EAST tokamak |
| title_full | Fuel recycling control in long pulse operation with full tungsten divertors in EAST tokamak |
| title_fullStr | Fuel recycling control in long pulse operation with full tungsten divertors in EAST tokamak |
| title_full_unstemmed | Fuel recycling control in long pulse operation with full tungsten divertors in EAST tokamak |
| title_short | Fuel recycling control in long pulse operation with full tungsten divertors in EAST tokamak |
| title_sort | fuel recycling control in long pulse operation with full tungsten divertors in east tokamak |
| topic | Fuel recycling Long pulse operation EAST Tokamak |
| url | http://www.sciencedirect.com/science/article/pii/S2352179122002149 |
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