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Title: 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
Other Titles: Thermal Conduction Characteristics of Bi- and Y-system Tape Conductors Aiming at Conduction-cooled Magnet
Authors: 長崎, 陽  KAKEN_name
中村, 武恒  kyouindb  KAKEN_id
船木, 一幸  KAKEN_name
芦田, 康将  KAKEN_name
山川, 宏  KAKEN_name
Author's alias: Nagasaki, Yoh
Nakamura, Taketsune
Funaki, Ikkoh
Ashida, Yasumasa
Yamakawa, Hiroshi
Keywords: magnetic sail
Y-system tape
Bi-system tape
conduction cool
thermal diffusivity
Issue Date: 25-Oct-2012
Publisher: 低温工学・超電導学会
Journal title: 低温工学 = Cryogenic engineering
Volume: 47
Issue: 10
Start page: 597
End page: 604
Abstract: 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.
Rights: © 2012 公益社団法人 低温工学・超電導学会
DOI(Published Version): 10.2221/jcsj.47.597
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