Compatibility of pronounced detachment with improved confinement on HL-2A tokamak
This paper investigates the compatibility of pronounced detachment with improved confinement based on the NBI-heated HL-2A L-mode plasma with low-density. Through impurity seeding, radiation becomes higher at plasma edge and causes edge cooling after pronounced detachment. Turbulent transport is exa...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Nuclear Fusion |
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| Online Access: | https://doi.org/10.1088/1741-4326/ad9e04 |
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| author | Ting Wu Min Xu Zhuo Wang Lin Nie Zhanhui Wang Jinming Gao Yihang Chen Yiren Zhu Yi Zhang Liang Liu Dong Li Kai Zhang Rui Ke Xiaoxue He Zengceng Yang Xin Yu Na Wu Zhihui Huang Kaiyang Yi Weice Wang Longwen Yan Yonggao Li Ting Long Renxu Wang Wenjing Tian Zhe Wang Laizhong Cai Yi Yu |
| author_facet | Ting Wu Min Xu Zhuo Wang Lin Nie Zhanhui Wang Jinming Gao Yihang Chen Yiren Zhu Yi Zhang Liang Liu Dong Li Kai Zhang Rui Ke Xiaoxue He Zengceng Yang Xin Yu Na Wu Zhihui Huang Kaiyang Yi Weice Wang Longwen Yan Yonggao Li Ting Long Renxu Wang Wenjing Tian Zhe Wang Laizhong Cai Yi Yu |
| author_sort | Ting Wu |
| collection | DOAJ |
| description | This paper investigates the compatibility of pronounced detachment with improved confinement based on the NBI-heated HL-2A L-mode plasma with low-density. Through impurity seeding, radiation becomes higher at plasma edge and causes edge cooling after pronounced detachment. Turbulent transport is examined in detail by experiments and global integrated simulations. Ion dominant turbulent transport decreases at normalized minor radius $\rho \in \left[ {0.1,{ }0.4} \right],$ and ion temperature increases at $\rho \in \left[ {0,{ }0.8} \right]$ . Edge turbulence and turbulent transport through ion channels decrease significantly, which could result from reduced free energy source due to edge cooling. The reduced edge turbulent transport benefits to decrease the power entering the SOL/divertor. The decreased edge outward transport and increased core electron density and ion temperature make major contributions to the improved plasma confinement after pronounced detachment. |
| format | Article |
| id | doaj-art-03b36aab16a041868136405c4a257a63 |
| institution | Kabale University |
| issn | 0029-5515 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Nuclear Fusion |
| spelling | doaj-art-03b36aab16a041868136405c4a257a632025-01-06T08:49:59ZengIOP PublishingNuclear Fusion0029-55152025-01-0165202602210.1088/1741-4326/ad9e04Compatibility of pronounced detachment with improved confinement on HL-2A tokamakTing Wu0https://orcid.org/0000-0003-2269-1968Min Xu1https://orcid.org/0009-0001-3059-7026Zhuo Wang2Lin Nie3Zhanhui Wang4Jinming Gao5https://orcid.org/0000-0002-9546-5139Yihang Chen6Yiren Zhu7Yi Zhang8https://orcid.org/0000-0003-1411-1257Liang Liu9Dong Li10https://orcid.org/0000-0003-3746-0839Kai Zhang11Rui Ke12https://orcid.org/0000-0003-0117-0098Xiaoxue He13https://orcid.org/0000-0002-1088-4845Zengceng Yang14Xin Yu15Na Wu16https://orcid.org/0000-0001-7949-5330Zhihui Huang17Kaiyang Yi18Weice Wang19Longwen Yan20Yonggao Li21Ting Long22https://orcid.org/0000-0002-0136-8953Renxu Wang23Wenjing Tian24https://orcid.org/0009-0009-3172-3512Zhe Wang25https://orcid.org/0000-0003-3778-7452Laizhong Cai26Yi Yu27Southwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaHigh School Affiliated to Renmin University of China , Beijing 100086, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaSino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University , Zhuhai 519082, ChinaThis paper investigates the compatibility of pronounced detachment with improved confinement based on the NBI-heated HL-2A L-mode plasma with low-density. Through impurity seeding, radiation becomes higher at plasma edge and causes edge cooling after pronounced detachment. Turbulent transport is examined in detail by experiments and global integrated simulations. Ion dominant turbulent transport decreases at normalized minor radius $\rho \in \left[ {0.1,{ }0.4} \right],$ and ion temperature increases at $\rho \in \left[ {0,{ }0.8} \right]$ . Edge turbulence and turbulent transport through ion channels decrease significantly, which could result from reduced free energy source due to edge cooling. The reduced edge turbulent transport benefits to decrease the power entering the SOL/divertor. The decreased edge outward transport and increased core electron density and ion temperature make major contributions to the improved plasma confinement after pronounced detachment.https://doi.org/10.1088/1741-4326/ad9e04pronounced detachmentimproved confinementedge turbulent transport |
| spellingShingle | Ting Wu Min Xu Zhuo Wang Lin Nie Zhanhui Wang Jinming Gao Yihang Chen Yiren Zhu Yi Zhang Liang Liu Dong Li Kai Zhang Rui Ke Xiaoxue He Zengceng Yang Xin Yu Na Wu Zhihui Huang Kaiyang Yi Weice Wang Longwen Yan Yonggao Li Ting Long Renxu Wang Wenjing Tian Zhe Wang Laizhong Cai Yi Yu Compatibility of pronounced detachment with improved confinement on HL-2A tokamak Nuclear Fusion pronounced detachment improved confinement edge turbulent transport |
| title | Compatibility of pronounced detachment with improved confinement on HL-2A tokamak |
| title_full | Compatibility of pronounced detachment with improved confinement on HL-2A tokamak |
| title_fullStr | Compatibility of pronounced detachment with improved confinement on HL-2A tokamak |
| title_full_unstemmed | Compatibility of pronounced detachment with improved confinement on HL-2A tokamak |
| title_short | Compatibility of pronounced detachment with improved confinement on HL-2A tokamak |
| title_sort | compatibility of pronounced detachment with improved confinement on hl 2a tokamak |
| topic | pronounced detachment improved confinement edge turbulent transport |
| url | https://doi.org/10.1088/1741-4326/ad9e04 |
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