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Large-Scale Simulation of Energetic Particle Driven Magnetohydrodynamic Instabilities in ITER Plasmas
http://hdl.handle.net/10655/11339
http://hdl.handle.net/10655/11339f5094ae8-aa52-49e5-a374-0f50ba9fcdb1
| 名前 / ファイル | ライセンス | アクション |
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pfr2014_09-3403068.pdf (2.3 MB)
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| Item type | 学術雑誌論文 / Journal Article_02(1) | |||||||||
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| 公開日 | 2015-03-27 | |||||||||
| タイトル | ||||||||||
| タイトル | Large-Scale Simulation of Energetic Particle Driven Magnetohydrodynamic Instabilities in ITER Plasmas | |||||||||
| 言語 | en | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| キーワード | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | ITER | |||||||||
| キーワード | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Alfv?n eigenmode | |||||||||
| キーワード | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | MHD instability | |||||||||
| キーワード | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | alpha particle | |||||||||
| キーワード | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | beam ion | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||
| 資源タイプ | journal article | |||||||||
| 著者 |
TODO, Yasushi
× TODO, Yasushi
× BIERWAGE, Andreas
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| 抄録 | ||||||||||
| 内容記述タイプ | Abstract | |||||||||
| 内容記述 | Magnetohydrodynamic (MHD) instabilities driven by energetic alpha particles and beam deuterium particles are investigated for ITER operation scenarios using a hybrid simulation code for energetic particles interacting with an MHD fluid. The particle simulation method with finite Larmor radius effects is applied to both alpha and beam deuterium particles. For the steady-state scenario with 9 MA plasma current, beta-induced Alfv?n eigenmodes (BAE modes) with low toroidal mode number (n = 3, 5) were found to become dominant in the nonlinear phase although many toroidal Alfv?n eigenmodes (TAE modes) with n ? 15 are most unstable in the linear phase. The redistribution of energetic particles with δβα ? δβbeam ? 0.07%, which respectively correspond to 6% and 8% of the central values, occurs in the nonlinear phase. When the toroidal mode number of the fluctuations is restricted to n ? 8, the redistribution is substantially reduced, thus, suggesting that the resonance overlap between the n ? 15 TAE and low-n BAE modes enhances the energetic particle transport in the run with full toroidal mode numbers. For the ITER scenario with 15 MA plasma current, an MHD instability with n = 3 that peaks around the q = 1 (q is the safety factor) magnetic surfaces is driven by bulk plasma current and bulk pressure, and results in significant redistribution of alpha particles with δβα ? 0.3%. For the equilibrium profile with the safety factor profile uniformly raised by 0.1 to remove the q = 1 surfaces, only a benign MHD instability occurs and the energetic particle transport is negligible. | |||||||||
| 書誌情報 |
en : Plasma and Fusion Research 巻 Vol.9, 号 S2, p. 3403068-1, 発行日 2014-06-01 |
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| 出版者 | ||||||||||
| 出版者 | プラズマ・核融合学会 | |||||||||
| DOI | ||||||||||
| 識別子タイプ | DOI | |||||||||
| 関連識別子 | 10.1585/pfr.9.3403068 | |||||||||
| 権利 | ||||||||||
| 権利情報 | ? 2014 The Japan Society of Plasma Science and Nuclear Fusion Research |
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Cite as
TODO, Yasushi, BIERWAGE, Andreas, 2014, Large-Scale Simulation of Energetic Particle Driven Magnetohydrodynamic Instabilities in ITER Plasmas: プラズマ・核融合学会, 3403068-1- p.
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