Effects of N/Ne impurity seeding on the divertor asymmetry in HL-2A tokamak
Divertor asymmetry is a major challenge in achieving high-power, long-pulse discharges in future fusion reactors. Impurity seeding is the most common method for achieving divertor detachment in fusion devices. In this study, the SOLPS-ITER code is used to investigate the impact mechanisms of nitroge...
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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/ada2aa |
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| _version_ | 1841556229615255552 |
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| author | Qingyi Tan Haoran Ye Xueyu Gong Yijun Zhong Qianhong Huang Zhe Wang Chengzhi Cao Zhanhui Wang Cailong Fu Min Xu Tao Yang |
| author_facet | Qingyi Tan Haoran Ye Xueyu Gong Yijun Zhong Qianhong Huang Zhe Wang Chengzhi Cao Zhanhui Wang Cailong Fu Min Xu Tao Yang |
| author_sort | Qingyi Tan |
| collection | DOAJ |
| description | Divertor asymmetry is a major challenge in achieving high-power, long-pulse discharges in future fusion reactors. Impurity seeding is the most common method for achieving divertor detachment in fusion devices. In this study, the SOLPS-ITER code is used to investigate the impact mechanisms of nitrogen (N) and neon (Ne) impurity seeding on the asymmetry between the inner and outer divertor in HL-2A under the attached and detached divertor conditions. Results indicate that N and Ne impurity seeding can increase asymmetry of energy and particle flux between the inner and outer targets. The trend in the energy flux ratio between the inner and outer targets is consistent with that of the particle flux ratio. Research indicates that under the attached divertor condition, the increase in energy flux asymmetry due to impurity seeding is primarily influenced by the electron temperatures between the inner and outer targets. However, when under the detached divertor condition, the increased asymmetry in energy and particle flux is primarily attributed to impurity seeding, which narrows the ion source generation in the inner divertor while broadening the ion sink region compared to the outer divertor. |
| format | Article |
| id | doaj-art-6b31734beb2a42ec8e736167610a4935 |
| institution | Kabale University |
| issn | 0029-5515 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Nuclear Fusion |
| spelling | doaj-art-6b31734beb2a42ec8e736167610a49352025-01-07T12:26:29ZengIOP PublishingNuclear Fusion0029-55152025-01-0165202603210.1088/1741-4326/ada2aaEffects of N/Ne impurity seeding on the divertor asymmetry in HL-2A tokamakQingyi Tan0https://orcid.org/0000-0001-8881-6490Haoran Ye1https://orcid.org/0009-0002-2629-2278Xueyu Gong2Yijun Zhong3Qianhong Huang4https://orcid.org/0000-0002-9793-7283Zhe Wang5https://orcid.org/0000-0003-3778-7452Chengzhi Cao6Zhanhui Wang7Cailong Fu8Min Xu9https://orcid.org/0009-0001-3059-7026Tao Yang10University of South China , Hengyang 421001, ChinaUniversity of South China , Hengyang 421001, ChinaUniversity of South China , Hengyang 421001, ChinaUniversity of South China , Hengyang 421001, ChinaUniversity of South China , Hengyang 421001, 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, ChinaUniversity of South China , Hengyang 421001, China; Radiotherapy Center, Huangshi Central Hospital , Hubei, Huangshi 435000, ChinaDivertor asymmetry is a major challenge in achieving high-power, long-pulse discharges in future fusion reactors. Impurity seeding is the most common method for achieving divertor detachment in fusion devices. In this study, the SOLPS-ITER code is used to investigate the impact mechanisms of nitrogen (N) and neon (Ne) impurity seeding on the asymmetry between the inner and outer divertor in HL-2A under the attached and detached divertor conditions. Results indicate that N and Ne impurity seeding can increase asymmetry of energy and particle flux between the inner and outer targets. The trend in the energy flux ratio between the inner and outer targets is consistent with that of the particle flux ratio. Research indicates that under the attached divertor condition, the increase in energy flux asymmetry due to impurity seeding is primarily influenced by the electron temperatures between the inner and outer targets. However, when under the detached divertor condition, the increased asymmetry in energy and particle flux is primarily attributed to impurity seeding, which narrows the ion source generation in the inner divertor while broadening the ion sink region compared to the outer divertor.https://doi.org/10.1088/1741-4326/ada2aadivertor asymmetryimpurity seedingSOLPS-ITER |
| spellingShingle | Qingyi Tan Haoran Ye Xueyu Gong Yijun Zhong Qianhong Huang Zhe Wang Chengzhi Cao Zhanhui Wang Cailong Fu Min Xu Tao Yang Effects of N/Ne impurity seeding on the divertor asymmetry in HL-2A tokamak Nuclear Fusion divertor asymmetry impurity seeding SOLPS-ITER |
| title | Effects of N/Ne impurity seeding on the divertor asymmetry in HL-2A tokamak |
| title_full | Effects of N/Ne impurity seeding on the divertor asymmetry in HL-2A tokamak |
| title_fullStr | Effects of N/Ne impurity seeding on the divertor asymmetry in HL-2A tokamak |
| title_full_unstemmed | Effects of N/Ne impurity seeding on the divertor asymmetry in HL-2A tokamak |
| title_short | Effects of N/Ne impurity seeding on the divertor asymmetry in HL-2A tokamak |
| title_sort | effects of n ne impurity seeding on the divertor asymmetry in hl 2a tokamak |
| topic | divertor asymmetry impurity seeding SOLPS-ITER |
| url | https://doi.org/10.1088/1741-4326/ada2aa |
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