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Investigation of fast ion behavior using orbit following Monte-Carlo code in magnetic perturbed field in KSTAR
https://repo.qst.go.jp/records/47791
https://repo.qst.go.jp/records/4779164492347-d8be-4e0f-b47c-6c729500c8bf
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-04-26 | |||||
| タイトル | ||||||
| タイトル | Investigation of fast ion behavior using orbit following Monte-Carlo code in magnetic perturbed field in KSTAR | |||||
| 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 |
Shinohara, Kouji
× Shinohara, Kouji× Suzuki, Yasuhiro× Kim, Junghee× Young, Kim Jun× Mu, Jeon Young× Bierwage, Andreas× Rhee, Tongnyeol× 篠原 孝司× ビアワーゲ アンドレアス |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The fast ion dynamics and the associated heat load on the plasma facing components in the KSTAR tokamak were investigated with the OFMC code in several magnetic field configurations and realistic wall geometry. In particular, attention was paid to the effect of resonant magnetic perturbation (RMP) fields. Both the vacuum field approximation as well as self-consistent field that includes the response of a stationary plasma were considered. In both cases, the magnetic perturbation is dominated by the toroidal mode number n=1, but otherwise its structure is strongly affected by the plasma response. The loss of fast ions increased significantly when the MP field was applied. Most loss particles hit the poloidal limiter structure around the outer mid-plane on the low field side, but the distribution of heat loads across the three limiters varied with the form of the magnetic perturbation. Short-timescale loss of supposedly well-confined co-passing fast ions was also observed. These losses started within a few poloidal transits after the fast ion was born deep inside the plasma on the high-field side of the magnetic axis. In the configuration studied, these losses are facilitated by the combination of two factors: (i) the large magnetic drift of fast ions across a wide range of magnetic surfaces due to a low plasma current, and (ii) resonant interactions between the fast ions and magnetic islands that were induced inside the plasma by the external RMP field. These effects are expected to play an important role in present-day tokamaks. | |||||
| 書誌情報 |
Nuclear Fusion 巻 56, 号 11, p. 112018-1-112018-15, 発行日 2016-08 |
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| 出版者 | ||||||
| 出版者 | IOP Science | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1088/0029-5515/56/11/112018 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | http://iopscience.iop.org/article/10.1088/0029-5515/56/11/112018 | |||||
| 関連名称 | http://iopscience.iop.org/article/10.1088/0029-5515/56/11/112018 | |||||
