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Plasma equilibrium based on RF-driven current profile without assuming nested magnetic surfaces on QUEST
https://repo.qst.go.jp/records/48893
https://repo.qst.go.jp/records/48893e1859921-a2cd-41db-9b2b-3a4869dff112
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-05-08 | |||||
| タイトル | ||||||
| タイトル | Plasma equilibrium based on RF-driven current profile without assuming nested magnetic surfaces on QUEST | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 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 |
Nakamura, K.
× Nakamura, K.× Alam, M.M.× Jiang, Y.Z.× Mitarai, O.× 栗原, 研一× 川俣, 陽一× 末岡, 通治× 武智, 学× Hasegawa, M.× Tokunaga, K.× Araki, K.× Zushi, H.× Hanada, K.× Fujisawa, A.× Idei, H.× Nagashima, Y.× Kawasaki, S.× Nakashima, H.× Higashijima, A.× Nagata, T.× 栗原 研一× 川俣 陽一× 末岡 通治× 武智 学 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In the present RF-driven (ECCD) steady-state plasma on QUEST, the plasma current seems to flow in the open magnetic surface outside of the closed magnetic surface in the low-field region according to the plasma current fitting (PCF) method. The current in the open magnetic surface is due to the orbit- driven current by high-energy particles in the RF-driven plasma. High-energy particles guiding center orbits are calculated as contour plots of conserved variables in the Hamiltonian formulation considering particles in the initial position with different energies and pitch angles satisfying the resonance condition. A negative current appears near the magnetic axis, and a hollow current profile is expected even if the pressure driven current is considered. The equilibrium is fitted within nested magnetic surfaces by J- EFIT coded by MATLAB using the hollow current profile shift toward the low-field region. Although the plasma boundary shape reflects the plasma current density profile, the equilibrium shape fitted by J-EFIT does not coincide with the orbit-driven current profile. However, introducing an extension of the current profile without assuming nested contours into the J-EFIT code appropriately fits the plasma shape with the hollow current profile to the measured magnetic data. | |||||
| 書誌情報 |
Fusion Engineering and Design 巻 123, p. 532-534, 発行日 2017-06 |
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| 出版者 | ||||||
| 出版者 | ELSEVIER | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.fusengdes.2017.05.070 | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1016/j.fusengdes.2017.05.070 | |||||
| 関連名称 | https://doi.org/10.1016/j.fusengdes.2017.05.070 | |||||
