低温工学
Online ISSN : 1880-0408
Print ISSN : 0389-2441
ISSN-L : 0389-2441
研究論文
伝導冷却マグネットを指向したビスマス系ならびにイットリウム系高温超電導テープ導体の伝熱特性
長崎 陽中村 武恒船木 一幸芦田 康将山川 宏
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2012 年 47 巻 10 号 p. 597-604

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This paper reports thermal diffusivities of Bi-system and Y-system tape conductors. First, we measure temperature traces of the bundled conductors for the heater disturbance at conduction cooling conditions. Obtained results are modeled and analyzed using one-dimensional as well as two-dimensional heat balance equations. We show that the analysis results can successfully reproduce the experimental results for a wide temperature range from 20 to 77 K. On the basis of such results, we also clarify that the thermal diffusivity, in the perpendicular direction to the tape surface, of the Y-system conductors are five orders of magnitude lower than that of the Bi-system ones. Our results indicate that the consideration of such low thermal diffusivity is important for the conduction-cooled magnet design.

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© 2012 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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