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Magnetically-guided liquid metal plasma-facing components
https://repo.qst.go.jp/records/66450
https://repo.qst.go.jp/records/66450e258bcf8-3961-4cb9-8d76-df7986d0ca75
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2017-09-25 | |||||
| タイトル | ||||||
| タイトル | Magnetically-guided liquid metal plasma-facing components | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 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 |
嶋田, 道也
× 嶋田, 道也× 嶋田 道也 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In a strong magnetic field, liquid metal is frozen in the magnetic field. This property enables liquid metal to flow along the field line. In a divertor configuration with a lower single-null, a second separatrix exists above the plasma. Toroidally-continuous liquid metal sheets, poured through toroidal slots located above the plasma and radially outside the 2nd separatrix flux surface, move along the field line, absorbing heat and particles, reach the divertor at a glancing angle, and give toroidal momentum to the divertor liquid metal. This makes the divertor liquid metal rotate in the toroidal direction, making the temperature and particle content toroidally uniform. At the current quench in a disruption, toroidal current is induced automatically in the liquid metal surrounding the core plasma. The resultant jxB force pushes the liquid metal toward the core plasma, significantly mitigating the heat load and force on the first wall and the divertor. Use of magnetically-guided liquid metal PFC would also eliminate the need of fine toroidal alignment of the first wall and the divertor. The wall conditioning is done automatically during the discharge. Use of lithium-containing liquid metal (e.g. LiSn) would facilitate tritium breeding. To avoid the complication due to the current induced in the liquid metal, the liquid metal sheets must be poured after the plasma current reaches a flat top and non-inductive current drive makes the one-turn voltage to a very low value. Current drive can be provided by ECW launched from above. Some diagnostics can be also installed on the upper port. Occasional interruption of the liquid metal flow would enable diagnosis from the midplane ports. |
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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 | 「ダイバータの学理と応用」研究会 | |||||
| 発表年月日 | ||||||
| 日付 | 2017-09-20 | |||||
| 日付タイプ | Issued | |||||
