書誌事項
- タイトル別名
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- Development of a Nb3Al Conductor to be Applied to a Fusion Reactor and Its Application to a Large Superconducting Coil
- カク ユウゴウロ オウヨウ オ メザシタ Nb3Al ドウタイ ノ カイハツ ト オオガタ チョウデンドウコイル エ ノ テキヨウ
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説明
The Japan Atomic Energy Research Institute has been involved in developing Nb3Al conductors since the middle of 1980s based on the consideration that Nb3Al conductors are capable of producing a higher magnetic field than Nb3Sn conductors owing to the extremely high critical current density in high magnetic fields. At the beginning of the development work, a fabrication technique for Nb3Al strands using a Jelly-roll process was established. This process requires heat treatment at 750°C for 50 h instead of a temperature of more than 1,800°C as required by the conventional method. Using this technique, about 1 ton of strands was produced and a 150-m Nb3Al cable-in-conduit conductor was fabricated. For the next step, to demonstrate the applicability of the Nb3Al conductor to a large coil, a coil 1.5-m in diameter, called the Nb3Al Insert, was manufactured. A react-and-wind method was tried for the production process as it simplifies the fabrication of large coils such as an ITER-TF coil. Performance tests of the Nb3Al Insert were conducted in 2002. The Nb3Al Insert could be charged to the designed point of 13 T and 46 kA without showing any instability. Thus, the world's first large superconducting coil using a Nb3Al conductor was successfully developed, thus indicating the possibility of producing fusion magnets that can operate in higher magnetic fields than those used with Nb3Sn conductors.
収録刊行物
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- 低温工学
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低温工学 38 (8), 391-398, 2003
公益社団法人 低温工学・超電導学会 (旧 社団法人 低温工学協会)
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詳細情報 詳細情報について
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- CRID
- 1390001204614355328
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- NII論文ID
- 10011157979
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- NII書誌ID
- AN00333419
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- COI
- 1:CAS:528:DC%2BD3sXnsleisbs%3D
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- ISSN
- 18800408
- 03892441
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- NDL書誌ID
- 6692795
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- 使用不可