Study of ion cyclotron emission excited by tritium ions of fusion products via magnetoacoustic cyclotron instability theory in the EAST
This study investigates the ion cyclotron emission (ICE) excited by tritium ions generated through deuterium‒deuterium fusion reactions in the Experimental Advanced Superconducting Tokamak (EAST). ICE is an electromagnetic instability driven by fast ions, and its excitation mechanism is primarily ex...
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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/addd31 |
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| author | Huapeng Zhang Lunan Liu Wei Zhang Xuan Sun Xinjun Zhang Baolong Hao |
| author_facet | Huapeng Zhang Lunan Liu Wei Zhang Xuan Sun Xinjun Zhang Baolong Hao |
| author_sort | Huapeng Zhang |
| collection | DOAJ |
| description | This study investigates the ion cyclotron emission (ICE) excited by tritium ions generated through deuterium‒deuterium fusion reactions in the Experimental Advanced Superconducting Tokamak (EAST). ICE is an electromagnetic instability driven by fast ions, and its excitation mechanism is primarily explained by magnetoacoustic cyclotron instability (MCI) theory, which describes energy transfer between fast ions and Alfvénic waves. Since ICE is closely related to the distribution of fast ions, the MCI growth rate is computed using linear theory based on the fast ion distribution calculated by TRANSP. Based on experimental parameters from EAST, we apply MCI theory to analyze the ICE growth rate and investigate the effects of key factors such as the propagation angle and the ratio of fast tritium ions to bulk deuterium plasma density. Experimental findings indicate that ICE excitation is at the fundamental frequency, simulations support that the propagation angle is approximately between 80° and 85°. At the fundamental frequency, the MCI growth rate increases with the propagation angle but decreases as the fast tritium ion density decreases. These results provide insights into the physics of ICE excitation and highlight its potential as the diagnostic tool for fast ions in future fusion reactors, including CFETR, DEMO, and ITER. Understanding ICE can help optimize fusion plasma performance and improve fast-ion confinement in next-generation magnetically confined fusion devices. |
| format | Article |
| id | doaj-art-7aaba3a2037347cd9dc7eee607ab5a32 |
| institution | Kabale University |
| issn | 0029-5515 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Nuclear Fusion |
| spelling | doaj-art-7aaba3a2037347cd9dc7eee607ab5a322025-08-20T03:25:59ZengIOP PublishingNuclear Fusion0029-55152025-01-0165707601310.1088/1741-4326/addd31Study of ion cyclotron emission excited by tritium ions of fusion products via magnetoacoustic cyclotron instability theory in the EASTHuapeng Zhang0https://orcid.org/0009-0009-9172-2984Lunan Liu1https://orcid.org/0000-0001-5694-7031Wei Zhang2https://orcid.org/0000-0002-5951-6779Xuan Sun3https://orcid.org/0000-0002-8338-3654Xinjun Zhang4https://orcid.org/0000-0002-8717-354XBaolong Hao5https://orcid.org/0000-0003-3009-0660Department of Plasma Physics and Fusion Engineering, School of Nuclear Science and Technology, University of Science and Technology of China , Hefei 230026, ChinaInstitute of Plasma Physics , Chinese Academy of Sciences, Hefei 230031, ChinaInstitute of Plasma Physics , Chinese Academy of Sciences, Hefei 230031, ChinaDepartment of Plasma Physics and Fusion Engineering, School of Nuclear Science and Technology, University of Science and Technology of China , Hefei 230026, ChinaInstitute of Plasma Physics , Chinese Academy of Sciences, Hefei 230031, ChinaSouthwestern Institute of Physics , Chengdu 610041, ChinaThis study investigates the ion cyclotron emission (ICE) excited by tritium ions generated through deuterium‒deuterium fusion reactions in the Experimental Advanced Superconducting Tokamak (EAST). ICE is an electromagnetic instability driven by fast ions, and its excitation mechanism is primarily explained by magnetoacoustic cyclotron instability (MCI) theory, which describes energy transfer between fast ions and Alfvénic waves. Since ICE is closely related to the distribution of fast ions, the MCI growth rate is computed using linear theory based on the fast ion distribution calculated by TRANSP. Based on experimental parameters from EAST, we apply MCI theory to analyze the ICE growth rate and investigate the effects of key factors such as the propagation angle and the ratio of fast tritium ions to bulk deuterium plasma density. Experimental findings indicate that ICE excitation is at the fundamental frequency, simulations support that the propagation angle is approximately between 80° and 85°. At the fundamental frequency, the MCI growth rate increases with the propagation angle but decreases as the fast tritium ion density decreases. These results provide insights into the physics of ICE excitation and highlight its potential as the diagnostic tool for fast ions in future fusion reactors, including CFETR, DEMO, and ITER. Understanding ICE can help optimize fusion plasma performance and improve fast-ion confinement in next-generation magnetically confined fusion devices.https://doi.org/10.1088/1741-4326/addd31ion cyclotron emissionmagnetoacoustic cyclotron instabilityEAST tokamak |
| spellingShingle | Huapeng Zhang Lunan Liu Wei Zhang Xuan Sun Xinjun Zhang Baolong Hao Study of ion cyclotron emission excited by tritium ions of fusion products via magnetoacoustic cyclotron instability theory in the EAST Nuclear Fusion ion cyclotron emission magnetoacoustic cyclotron instability EAST tokamak |
| title | Study of ion cyclotron emission excited by tritium ions of fusion products via magnetoacoustic cyclotron instability theory in the EAST |
| title_full | Study of ion cyclotron emission excited by tritium ions of fusion products via magnetoacoustic cyclotron instability theory in the EAST |
| title_fullStr | Study of ion cyclotron emission excited by tritium ions of fusion products via magnetoacoustic cyclotron instability theory in the EAST |
| title_full_unstemmed | Study of ion cyclotron emission excited by tritium ions of fusion products via magnetoacoustic cyclotron instability theory in the EAST |
| title_short | Study of ion cyclotron emission excited by tritium ions of fusion products via magnetoacoustic cyclotron instability theory in the EAST |
| title_sort | study of ion cyclotron emission excited by tritium ions of fusion products via magnetoacoustic cyclotron instability theory in the east |
| topic | ion cyclotron emission magnetoacoustic cyclotron instability EAST tokamak |
| url | https://doi.org/10.1088/1741-4326/addd31 |
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