| Project/Area Number |
24760702
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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 | National Institute for Fusion Science |
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Principal Investigator |
KAWAMURA Gakushi 核融合科学研究所, ヘリカル研究部, 助教 (70509520)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Keywords | 核融合プラズマ / 周辺プラズマ / 輸送 / リサイクリング / 不純物 / LHD / 磁場閉じ込め核融合 / 輸送モデリング / シミュレーション / 周辺プラズマ輸送 / ＬＨＤ |
|---|
| Outline of Final Research Achievements |
A transport model with EMC3-EIRENE code was developed to realize impurity transport analysis on the peripheral regions of Large Helical Device of NIFS. Simulation analysis was carried out and showed the following results. Modification of the divertor configurations, from the open to the closed ones, increases hydrogen recycling between neutral molecules and ions and hence, increases plasma density and impurity density in the divertor regions. Impurity screening due to plasma flow, however, is dominant in the case of high density plasma, and the difference of the amount of impurity ions in the plasma between the open and the closed divertor configurations is relatively small.
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