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Modeling of the ECCD injection effect on the Heliotron J and LHD plasma stability
http://hdl.handle.net/10655/00012865
http://hdl.handle.net/10655/0001286514362e53-3a02-4199-b7db-87eb0aacdeed
名前 / ファイル | ライセンス | アクション |
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Nucl.Fusion60_pp112015 (2.3 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-12-28 | |||||
タイトル | ||||||
タイトル | Modeling of the ECCD injection effect on the Heliotron J and LHD plasma stability | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | stellarator | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | LHD | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | MHD | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | AE | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | energetic particles | |||||
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 |
VARELA, Jacobo
× VARELA, Jacobo× NAGASAKI, Kazunobu× NAGAOKA, Kenichi× YAMAMOTO, Satoshi× WATANABE, Kiyomasa× SPONG, Donald A.× GARCIA, Luis× CAPPA, Alvaro× AZEGAMI, A. |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0002-6114-0539 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The aim of the study is to analyze the stability of the energetic particle modes (EPM) and Alfven Eigenmodes (AE) in Helitron J and LHD plasma if the electron cyclotron current drive (ECCD) is applied. The analysis is performed using the code FAR3d that solves the reduced MHD equations describing the linear evolution of the poloidal flux and the toroidal component of the vorticity in a full 3D system, coupled with equations of density and parallel velocity moments for the energetic particle (EP) species, including the effect of the acoustic modes. The Landau damping and resonant destabilization effects are added via the closure relation. The simulation results show that the n=1 EPM and n=2 global AE (GAE) in Heliotron J plasma can be stabilized if the magnetic shear is enhanced at the plasma periphery by an increase (co-ECCD injection) or decrease (ctr-ECCD injection) of the rotational transform at the magnetic axis (-ι0). In the ctr-ECCD simulations, the EPM/AE growth rate decreases only below a given-ι0, similar to the ECCD intensity threshold observed in the experiments. In addition, ctr-ECCD simulations show an enhancement of the continuum damping. The simulations of the LHD discharges with ctr-ECCD injection indicate the stabilization of the n=1 EPM, n=2 toroidal AE (TAE) and n=3 TAE, caused by an enhancement of the continuum damping in the inner plasma leading to a higher EP β threshold with respect to the co- and no-ECCD simulations. | |||||
書誌情報 |
Nuclear Fusion 巻 60, 号 11, p. 112015, 発行日 2020-09-14 |
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出版者 | ||||||
出版者 | IOP Publishing | |||||
出版者 | ||||||
出版者 | International Atomic Energy Agency | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0029-5515 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00759871 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1741-4326/abad84 | |||||
権利 | ||||||
権利情報 | ‘This is the Accepted Manuscript version of an article accepted for publication in Nuclear Fusion. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/1741-4326/abad84.’ | |||||
情報源 | ||||||
関連名称 | Citation J. Varela et al 2020 Nucl. Fusion 60 112015 | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/1741-4326/abad84 | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
NAIS | ||||||
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