| Project/Area Number |
26820400
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Nuclear fusion studies
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| Research Institution | Gifu National College of Technology (2015-2016)
Japan Atomic Energy Agency (2014) |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
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| Keywords | ディスラプション / トカマク型核融合装置 / ハロー電流 / ディスラプションシミュレーション / 核融合 / 垂直位置移動現象 / プラズマ電流減衰 / トカマク装置 / 電流クエンチ / MHD不安定性 / MHD安定性計算 / トカマク / 電子温度分布 |
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| Outline of Final Research Achievements |
Development of accurate predictive model of disruption, especially halo current, is important since disruption leads to a huge damage for nuclear fusion reactor. In this study, we investigated the halo current prediction model by using a combination between experimental data and disruption simulation code, and obtained the following findings: (1) The decay of plasma current with a low electron temperature during the disruption is determined by the area-averaged value of electron temperature. (2) time change of electron temperature profile which is caused to the decay of plasma current is related to MHD instability just before disruption occurs. (3) Conductive structures are very important for a strong returning force to oncoming plasma when a vertical displacement event is occurred.
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