Fabrication of Bi-2223 HTS magnet with a superconducting switch

Sang Soo Oh; Hong Soo Ha; Hyun Man Jang; Dong Woo Ha; Rock Kil Ko; Young Kil Kwon; Kang Sik Ryu; Haigun Lee; Benjamin Haid; Yukikazu Iwasa

doi:10.1109/77.920203

Fabrication of Bi-2223 HTS magnet with a superconducting switch

Sang Soo Oh, Hong Soo Ha, Hyun Man Jang, Dong Woo Ha, Rock Kil Ko, Young Kil Kwon, Kang Sik Ryu, Haigun Lee, Benjamin Haid, Yukikazu Iwasa

Research output: Contribution to journal › Conference article › peer-review

12 Citations (Scopus)

Abstract

A test pancake magnet, equipped with a persistent superconducting switch, was fabricated with Bi-2223/Ag-Mg tape. The magnet was operated in persistent mode at 20 and 77 K. For large operating currents that forces the magnet to operate in the flux flow range, the field decays is exponentially with time. A simple circuit model is used to compute field decay time constants. It was also found that Pb-Sn solder joints are unsuitable for persistent mode operation.

Original language	English
Pages (from-to)	1828-1831
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	11
Issue number	1 II
DOIs	https://doi.org/10.1109/77.920203
Publication status	Published - 2001 Mar
Externally published	Yes
Event	2000 Applied Superconductivity Conference - Virginia Beach, VA, United States Duration: 2000 Sep 17 → 2000 Sep 22

Keywords

Bi-2223
HTS
Magnet
Persistent mode

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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Fabrication of Bi-2223 HTS magnet with a superconducting switch. / Oh, Sang Soo; Ha, Hong Soo; Jang, Hyun Man; Ha, Dong Woo; Ko, Rock Kil; Kwon, Young Kil; Ryu, Kang Sik; Lee, Haigun; Haid, Benjamin; Iwasa, Yukikazu.

In: IEEE Transactions on Applied Superconductivity, Vol. 11, No. 1 II, 03.2001, p. 1828-1831.

Research output: Contribution to journal › Conference article › peer-review

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abstract = "A test pancake magnet, equipped with a persistent superconducting switch, was fabricated with Bi-2223/Ag-Mg tape. The magnet was operated in persistent mode at 20 and 77 K. For large operating currents that forces the magnet to operate in the flux flow range, the field decays is exponentially with time. A simple circuit model is used to compute field decay time constants. It was also found that Pb-Sn solder joints are unsuitable for persistent mode operation.",

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AU - Ko, Rock Kil

AU - Kwon, Young Kil

AU - Ryu, Kang Sik

AU - Lee, Haigun

AU - Haid, Benjamin

AU - Iwasa, Yukikazu

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N2 - A test pancake magnet, equipped with a persistent superconducting switch, was fabricated with Bi-2223/Ag-Mg tape. The magnet was operated in persistent mode at 20 and 77 K. For large operating currents that forces the magnet to operate in the flux flow range, the field decays is exponentially with time. A simple circuit model is used to compute field decay time constants. It was also found that Pb-Sn solder joints are unsuitable for persistent mode operation.

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KW - Persistent mode

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