5 T-class REBCO Magnet Cooled using Single-stage Cryocooler

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  • 5 T 発生可能な単段冷凍機冷却によるRE 系高温超電導磁石
  • 5T ハッセイ カノウ ナ タンダン レイトウキ レイキャク ニ ヨル REケイ コウオン チョウデンドウジシャク

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Abstract

REBa2Cu3O7 (REBCO)-coated conductors can raise the operating temperature of magnets equipped for use in maglev applications. High operating temperature enables cryogen-free cooling and downsizing of the power source. A REBCO magnet has been fabricated to demonstrate that magnetic flux density of 5 T, which is the same level as that of the existing magnet equipped, is achievable at high temperatures above 40 K. The demonstration magnet has no radiation shield. Therefore, the gap between the superconducting coil and the cryostat is only 5 mm long. In the case of maglev applications, this corresponds to an increase in interlinkage magnetic flux.

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