2023 Fiscal Year Final Research Report
Studies on temporal variation analysis of modulation effect and self-excitation in a traveling wave direct energy converter
| Project/Area Number |
20H02131
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 21010:Power engineering-related
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| Research Institution | Kobe University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
古川 武留 神戸大学, 工学研究科, 助教 (70845122)
中本 聡 神戸大学, 工学研究科, 助手 (10198260)
市村 和也 神戸大学, 工学研究科, 教室系技術職員 (20756001)
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| Project Period (FY) |
2020-04-01 – 2024-03-31
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| Keywords | 核融合 / 新エネルギー / 直接発電 / 進行波型直接エネルギー変換器 |
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| Outline of Final Research Achievements |
In a traveling wave direct energy converter, which will be used in D-3He fusion power generation, the incident ion flux is scattered radially by modulation. The present study is aiming at the clarification of the physical mechanism. We performed simulation experiments by using electrodes for field formation with a single hole excluding mesh in order to prevent from disturbing the phenomenon by secondary electrons. The radial distribution of the incident ion flux after modulation shows an increase due to the field application at a position where no reaction was found on dc field application. This increase does not correspond to the deflection in numerical orbit calculations of a single particle, and is expected to be a result of scattering due to bunching by the modulation.
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| Free Research Field |
プラズマ工学
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| Academic Significance and Societal Importance of the Research Achievements |
この研究は，究極の脱炭素・脱放射能エネルギー源たるヘリウム3燃料核融合発電における，進行波型直接エネルギー変換器の開発に関わる一課題である．イオン束の径方向散乱は，変換元エネルギーの損失であり，変換器の効率に直結する．研究自体はまだ現象解明の段階ながら，この問題を扱うことは高効率器の開発へ向けての一歩と評価できる．また，計画途中から組み込まれた変換器構造からの格子電極の廃止は重要で，これが実験研究において導入されたことも変換器開発へ向けての前進と評価できる．
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