| Project/Area Number |
25820438
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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 | Tokushima Bunri University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2015: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2014: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2013: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Keywords | イオン源 / 輸送 / ビーム引き出し / 負イオン源 / 引き出し / 数値計算 / ビーム / 水素負イオン / プラズマ |
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| Outline of Final Research Achievements |
In this study, simulation codes for beam extraction region of a hydrogen negative ion source have been developed and improved by validations with experimental results in an actual ion source. The codes were required to obtain high reproducibility to experimental results, especially for spatial potential structure in an ion source plasma affected by beam extraction voltage in kV range which has been considered as one of key factors for ion source performances. As a result, the simulation can provide similar results to the experimental ones, even if it uses open boundary condition in Poisson equation which is probably suitable for a purpose of performance predictions in devise designs of negative ion sources although there is disadvantage to obtain reliable results. On the other hand, unforeseen problems were found in potential oscillation and electron transport across magnetic field, which should be overcome to achieve higher reliability of the simulation.
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