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Development of poloidal horseshoe limiter concept for JA DEMO
https://repo.qst.go.jp/records/86536
https://repo.qst.go.jp/records/86536afdb7e22-2205-4775-93cf-66cfbfd37cda
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-05-20 | |||||
| タイトル | ||||||
| タイトル | Development of poloidal horseshoe limiter concept for JA DEMO | |||||
| 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 |
Chen, Weixi
× Chen, Weixi× Yoji, Someya× Arikawa, Mitsuhiro× Hiroyasu, Uto× Ryoji, Hiwatari× Naotaka, Umeda× Satoshi, Kakudate× Yoshiteru, Sakamoto× Chen, Weixi× Yoji, Someya× Arikawa, Mitsuhiro× Hiroyasu, Uto× Ryoji, Hiwatari× Naotaka, Umeda× Satoshi, Kakudate× Yoshiteru, Sakamoto |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In the development of a DEMO fusion reactor, mitigating the heat load deposited on the breeding blanket at steady-state operation is one of the challenging issues because of the localized high heat flux brought by charged particles and low thermal conductivity of the Reduced Activation Ferritic/Martensite (RAFM) steel structural material. This study proposes a concept of limiter for JA DEMO; a horseshoe-shaped limiter which is continuous poloidally in the first wall except for the divertor area, and discretized toroidally. The limiter is protruded from the first wall to shade the blankets from the charged particles, which move along the magnetic field lines. To enhance the heat removal capability and neutron irradiation tolerance, a tungsten mono-block using RAFM heat sink was applied as the plasma-facing unit (PFU) on the limiters. The heat removal capability of the limiter’s PFU was evaluated as 4.6 MW/m2. The limiter shape satisfying this value was determined basing on the utilization of heat load evaluation with three-dimensional magnetic field line tracing. Three limiter shape parameters; protrusion height, protrusion width and the first wall set-back, were investigated to understand the variation of charged particle load distribution. Both cylindrical and box-shaped blanket concepts were considered, and design windows for the limiter shape were acquired to discuss the optimum parameter. The optimum limiter shape fulfilling the requirement of steady-state operation has been defined, and the limiter’s occupied area amounts to 1.2 % of the FW area for both blanket options. | |||||
| 書誌情報 |
IEEE Transactions on Plasma Science 発行日 2022-06 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1939-9375 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1109/TPS.2022.3176443 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://ieeexplore.ieee.org/document/9807642 | |||||
