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Reduction of CS flux consumption during plasma current ramp-up on DEMO reactor
https://repo.qst.go.jp/records/72178
https://repo.qst.go.jp/records/72178f834e8a9-9545-46a8-9468-2b3d9dc0c69d
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-03-10 | |||||
| タイトル | ||||||
| タイトル | Reduction of CS flux consumption during plasma current ramp-up on DEMO reactor | |||||
| 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_c94f | |||||
| 資源タイプ | conference object | |||||
| 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 |
Wakatsuki, Takuma
× Wakatsuki, Takuma× 鈴木, 隆博× 林, 伸彦× 白石, 淳也× 坂本, 宜照× 井手, 俊介× 久保, 博孝× 鎌田, 裕× 若月 琢馬× 鈴木 隆博× 林 伸彦× 白石 淳也× 坂本 宜照× 井手 俊介× 久保 博孝× 鎌田 裕 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The method for reducing a poloidal magnetic flux consumption of external coils is investigated to reduce the size of a central solenoid (CS) in DEMO reactor. The reduction of the poloidal magnetic flux consumption during a plasma current ramp-up phase by the electron cyclotron (EC) heating is investigated using an integrated modeling code suite, TOPICS. A strongly reversed shear q profile tends to be produced if intense off-axis EC heating is applied to obtain a large reduction of the flux consumption. However, we have found the scheme to minimize the poloidal flux consumption for all the specific time evolution of the q profile through the optimization of the electron temperature profile. We have also quantified the lower limit of the flux consumption which is determined by the q profile at the end of the current ramp-up when almost all the current is driven inductively. As a result, it is clarified that the poloidal magnetic flux consumption can be reduced by 20% using 20-31 MW of EC heating maintaining a weakly reversed shear q profile. This reduction of the flux consumption accounts for 10% reduction of the CS radius. |
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| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 26th IAEA Fusion Energy Conference | |||||
| 発表年月日 | ||||||
| 日付 | 2016-10-21 | |||||
| 日付タイプ | Issued | |||||
