| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2024-02-16 |
| タイトル |
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タイトル |
Parameter study of L-H transition for plasma operation scenario development in JA DEMO |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Sugiyama Shota
Aiba Nobuyuki
Asakura Nobuyuki
Hayashi Nobuhiko
Sakamoto Yoshiteru
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
We have investigated the L?H transition in JA DEMO, a design concept of the steady-state tokamak fusion demonstration reactor. We develop an L?H transition model, which determines the minimum pedestal growth time such that a power ratio, the net plasma loss power across the separatrix over the L?H threshold power, is maintained at a constant value during pedestal growth for a given external heating power. We conduct parameter studies using an integrated modeling code, considering impurity transport. The dependence of the heating power and time required for the L?H transition on the plasma density, temperature, threshold power, impurity density fraction, and impurity transport coefficients is clarified. We evaluate the appropriate impurity density fraction for the L?H transition and the divertor heat load reduction. The fraction depends on the impurity transport coefficients and external heating power. The obtained results are necessary to confirm the L?H transition feasibility and to develop the plasma operation scenario consistent with the various engineering constraints in a design-stage reactor. The heating power required for the L?H transition turns out to be lower than the power supposed to be installable in the current design activities of JA DEMO. |
| 書誌情報 |
Fusion Engineering and Design
巻 187,
p. 113369,
発行日 2023-02
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| 出版者 |
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出版者 |
Elsevier |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0920-3796 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
/10.1016/j.fusengdes.2022.113369 |
