OPERATION OF BI-2212 SUPERCONDUCTING MAGNET WITH ROOM-TEMPERATURE BORE OF 45-MM DIAMETER AT 20 K

被引：10

作者：

HASE, T

SHIBUTANI, K

HAYASHI, S

OGAWA, R

KAWATE, Y

机构：

[1] Superconductivity Research Section, Electronics Research Laboratory, Technical Development Group, Nishi-Ku, Kobe, Hyogo, 651-22, 5-5, Takatsukadai

来源：

CRYOGENICS | 1995年 / 35卷 / 02期

关键词：

SILVER-SHEATHED BI-2212 TAPES; SUPERCONDUCTING MAGNETS; ROOM TEMPERATURE BORE;

D O I：

10.1016/0011-2275(95)92881-R

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A Bi-2212 superconducting magnet with a practical room temperature (RT) bore of 45 mm diameter has been fabricated. The magnet was cooled by a Gifford-McMahon cryocooler and generated magnetic fields up to 0.68 T at 20 K. Oxide superconducting magnets with such a large RT bore require high homogeneity of the critical current density in the silver-sheathed Bi-2212 tape over long ranges such as 1500 m. This problem has been solved by optimizing the time for calcination of the Bi-2212 powder and employing a new heat process.

引用

页码：127 / 133

页数：7

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