WEKO3
アイテム
Reconnecting instabilities in JT-60SA during current ramp-up with off-axis N-NB injection
https://repo.qst.go.jp/records/49303
https://repo.qst.go.jp/records/49303fc8e6bb6-e127-459d-af28-f24282d9fd89
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-12-06 | |||||
| タイトル | ||||||
| タイトル | Reconnecting instabilities in JT-60SA during current ramp-up with off-axis N-NB injection | |||||
| 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 |
ビアワーゲ, アンドレアス
× ビアワーゲ, アンドレアス× 相羽, 信行× 松山, 顕之× 篠原, 孝司× 矢木, 雅敏× ビアワーゲ アンドレアス× 相羽 信行× 松山 顕之× 篠原 孝司× 矢木 雅敏 |
|||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We report results of global resistive magnetohydrodynamic (MHD) simulations, which predict that wide-spread reconnecting instabilities may cause an internal disruption when 5 MW off-axis negative-ion-based neutral beam (N-NB) injection is used during the current ramp-up phase of a JT-60SA plasma. The simulations include fast ions as passive test particles and were initialized with plasma profiles obtained from an integrated transport simulation. The beam-driven current produces a nonmonotonic safety factor profile with three q=2 rational surfaces. The resulting double or multiple kink-tearing instabilities redistribute both the bulk and fast particles in the inner half of the plasma. While the radial profiles appear to be flattened, the actual field topology and particle distributions are found to saturate in helical states. Moreover, because magnetic drifts are still large during the current ramp-up phase, there is a large difference between the topology of the magnetic field and 500 keV deuteron orbits. Fast ion phase space islands may thus appear and overlap at different times and in different regions than their magnetic counterparts. | |||||
| 書誌情報 |
Plasma Physics and Controlled Fusion 巻 61, p. 014025-1-014025-17, 発行日 2018-12 |
|||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1088/1361-6587/aad97b | |||||
