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Estimation of RF power absorption and stray distribution at plasma breakdown based on the design of ITER ECH&CD equatorial launcher
https://repo.qst.go.jp/records/83846
https://repo.qst.go.jp/records/83846ef4161f6-d133-4393-a379-919860ad178b
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-03-29 | |||||
| タイトル | ||||||
| タイトル | Estimation of RF power absorption and stray distribution at plasma breakdown based on the design of ITER ECH&CD equatorial launcher | |||||
| 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 |
Satoru, Yajima
× Satoru, Yajima× Ken, Kajiwara× Masami, Isozaki× Kobayashi, Noriyuki× Ryosuke, Ikeda× Takayuki, Kobayashi× Takahiro, Shinya× Hibiki, Yamazaki× Koji, Takahashi× Satoru, Yajima× Ken, Kajiwara× Masami, Isozaki× Kobayashi, Noriyuki× Ryosuke, Ikeda× Takayuki, Kobayashi× Takahiro, Shinya× Hibiki, Yamazaki× Koji, Takahashi |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Based on the latest optical design of ITER ECH&CD equatorial launcher, the power absorption at the plasma breakdown is evaluated with considering reflections by the 3-dimensional first wall structure. The beam diffusion is simulated by a bunch of spreading rays and the reflections on the first wall is analyzed for each ray. The power absorption is evaluated by the optical thickness when the rays pass across the resonant surface. The frequency of EC wave is 170 GHz and the density of concern is from 2.5x10^15 m^-3. As a result, at least 2 MW is absorbed out of 6.7 MW injection from the Top row in the case of fundamental O-mode injection even at the breakdown. In the case of 2nd harmonic X-mode injection, the total absorbing power is 200 kW at the electron density of 10^18 m^-3 and the electron temperature of 5 eV, which is proportional to the electron density and the electron temperature. It is found that a certain injection angle should be excluded in order to prevent intense stray RF injection up to 4 MW propagating toward specific ports within a few reflections. | |||||
| 書誌情報 |
Fusion Engineering and Design 巻 170, p. 112470, 発行日 2021-09 |
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| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0920-3796 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.fusengdes.2021.112470 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://www.sciencedirect.com/science/article/pii/S0920379621002465?via%3Dihub | |||||
