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Numerical analysis of ELM stability with rotation and ion diamagnetic drift effects in JET
https://repo.qst.go.jp/records/48956
https://repo.qst.go.jp/records/489568cd7d500-0678-42c1-aadf-706ed0cfc8cf
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-05-11 | |||||
| タイトル | ||||||
| タイトル | Numerical analysis of ELM stability with rotation and ion diamagnetic drift effects in JET | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 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 | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
相羽, 信行
× 相羽, 信行× Giroud, C.× 本多, 充× Delabie, E.× Saarelma, S.× Frassinetti, L.× Lupelli, I.× J., Casson F.× Pamela, S.× Urano, H.× F., Maggi C.× Contributors, JET× 相羽 信行× 本多 充 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Stability to the type-I edge localized mode (ELM) in JET plasmas was investigated numerically by analyzing the stability to a peeling-ballooning mode with the effects of plasma rotation and ion diamagnetic drift. The numerical analysis was performed by solving the extended Frieman–Rotenberg equation with the MINERVA-DI code. To take into account these effects in the stability analysis self-consistently, the procedure of JET equilibrium reconstruction was updated to include the profiles of ion temperature and toroidal rotation, which are determined based on the measurement data in experiments. With the new procedure and MINERVA-DI, it was identified that the stability analysis including the rotation effect can explain the ELM trigger condition in JET with ITER like wall (JET-ILW), though the stability in JET with carbon wall (JET-C) is hardly affected by rotation. The key difference is that the rotation shear in JET-ILW plasmas analyzed in this study is larger than that in JET-C ones, the shear which enhances the dynamic pressure destabilizing a peeling-ballooning mode. In addition, the increase of the toroidal mode number of the unstable MHD mode determining the ELM trigger condition is also important when the plasma density is high in JET-ILW. Though such modes with high toroidal mode number are strongly stabilized by the ion diamagnetic drift effect, it was found that plasma rotation can sometimes overcome this stabilizing effect and destabilizes the peeling-ballooning modes in JET-ILW. | |||||
| 書誌情報 |
Nuclear Fusion 巻 57, 号 12, p. 126001-(11pp), 発行日 2017-09 |
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| 出版者 | ||||||
| 出版者 | Institute of Physics | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1088/1741-4326/aa8178 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://iopscience.iop.org/article/10.1088/1741-4326/aa8178/meta;jsessionid=32CF45000D09DE28C31E4B2B378E1D9B.c3.iopscience.cld.iop.org | |||||
| 関連名称 | http://iopscience.iop.org/article/10.1088/1741-4326/aa8178/meta;jsessionid=32CF45000D09DE28C31E4B2B378E1D9B.c3.iopscience.cld.iop.org | |||||
