2021 Fiscal Year Annual Research Report
Investigation of ion heating/acceleration during merging startup in spherical tokamak
| Project/Area Number |
19J21339
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Ahmadi Tara 東京大学, 工学系研究科, 特別研究員(DC1)
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| Project Period (FY) |
2019-04-25 – 2022-03-31
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| Keywords | Plasma reconstruction / Magnetic probes / MHD simulation / Magnetic configuration / Tokamak / Merging-compression |
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| Outline of Annual Research Achievements |
In 2021, we published results received from the 2D resistive MHD simulation conducted to study the role of the driving coils basic properties in maximizing the ion heating during the merging-compression and double-null merging startup methods. Right after, a question regarding the pressure balance during the flux rope formation and merging raised. The results of the 2D Hall MHD simulation showed that the internal toroidal magnetic field balances out the decreasing poloidal field which can be useful at the flux rope formation stage. After conducting multiple numerical studies, it became necessary to improve the quality of the experimental measurements by coupling the externally measured magnetic field values to the MHD simulation to calculate the internal plasma parameters which usually are unknown due to the high temperature of the core plasma. The results of these studies have been published in the various journals.
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| Research Progress Status |
令和3年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
令和3年度が最終年度であるため、記入しない。
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