2014 Fiscal Year Final Research Report
Global structure change of toroidal plasmas including magnetic islands in pressure increasing phase
| Project/Area Number |
22560822
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nuclear fusion studies
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| Research Institution | National Institute for Fusion Science |
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Principal Investigator |
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| Research Collaborator |
CARRERAS Benjamin A.
SAITO Kinya
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| Project Period (FY) |
2010-04-01 – 2015-03-31
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| Keywords | 核融合プラズマ / ヘリオトロン / 数値シミュレーション / 電磁流体力学 / 圧力駆動型不安定性 / 磁気島 / ベータ値 |
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| Outline of Final Research Achievements |
In toroidal fusion plasmas, the structure of the plasma pressure and the magnetic field is changed by the nonlinear evolution of instabilities. The increase of the plasma pressure, the change of the background field and the application of the peturebed field affect such global structure chnage. In this study, we analyzed these effects by means of the numerical simulation based on Magnetohydrodynamic equations. We have obtained that the continuous self-organization can contribute to the stabilizaion in the increase of the plasma pressure, that a partial collapse is repeated by the change of the background field and the plasma heating, and that the magnetic island generated by the resonant magnetic perturbation causes the three-dimensional deformation of the equilibrium pressure profile which changes the mode structure of the pressure driven instability.
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| Free Research Field |
核融合学、プラズマ物理学
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