Measurement of joint properties of Bi(Pb)-Sr-Ca-Cu-O (2223) tapes by field decay technique

Jung Ho Kim; Kyu Tae Kim; Seok Hern Jang; Jinho Joo; Seyong Choi; Wansoo Nah; Hyoungku Kang; Tae Kuk Ko; Hong Soo Ha; Sang Soo Oh; Kang Sik Ryu; Philip Nash

doi:10.1109/TASC.2003.812049

Measurement of joint properties of Bi(Pb)-Sr-Ca-Cu-O (2223) tapes by field decay technique

Jung Ho Kim, Kyu Tae Kim, Seok Hern Jang, Jinho Joo, Seyong Choi, Wansoo Nah, Hyoungku Kang, Tae Kuk Ko, Hong Soo Ha, Sang Soo Oh, Kang Sik Ryu, Philip Nash

Department of Electrical and Electronic Engineering

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

10 Citations (Scopus)

Abstract

We joined 19-multifilamentary Bi-2223 superconductor tapes and fabricated double-pancake coils by using resistive- and superconducting-joint methods. The critical current ratio (CCR) of the jointed tape and the decay characteristics, joint resistance, and n-value of the pancake coils were evaluated. The joint resistance of the coils was characterized by the field decay technique. It was observed that the CCR was higher in the joined tape made by the resistive-joint method, compared to that by the superconducting-joint method. On the other hand, joint resistance was measured to be 4 orders of magnitude smaller in the superconducting-joint coil; approximately 40% of critical current was retained in the persistent current mode and the joint resistance was 0.18 nΩ. Better and longer retention of the magnetic field in the superconducting-joint coil is believed to be due to the direct connection between the superconducting cores.

Original language	English
Pages (from-to)	2992-2995
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	13
Issue number	2 III
DOIs	https://doi.org/10.1109/TASC.2003.812049
Publication status	Published - 2003 Jun
Event	2002 Applied Superconductivity Conference - Houston, TX, United States Duration: 2002 Aug 4 → 2002 Aug 9

Bibliographical note

Funding Information:
Manuscript received August 4, 2002. This work was supported by a grant from Center for Applied Superconductivity Technology of 21st Century Frontier R&D Program Funded by the Ministry of Science and Technology, Republic of Korea. J. H. Kim, K. T. Kim, S. H. Jang and J. Joo are with the School of Metallurgical and Materials Engineering, SungKyunKwan University, Suwon, Republic of Korea (e-mail: jinho@skku.ac.kr). S. Choi and W. Nah are with the School of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, Republic of Korea. H. Kang and T. K. Ko are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Republic of Korea. H.-S. Ha, S.-S. Oh and K.-S. Ryu are with the Applied Superconductivity Laboratory, Korea Electrotechnology Research Institute. Changwon, Republic of Korea. P. Nash is with the Thermal Processing Technology Center, Illinois Institute of Technology, Chicago, IL 60616 USA. Digital Object Identifier 10.1109/TASC.2003.812049

All Science Journal Classification (ASJC) codes

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

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10.1109/TASC.2003.812049

Cite this

@article{0abdb85c28624ec6ad54cb2fb46de71b,

title = "Measurement of joint properties of Bi(Pb)-Sr-Ca-Cu-O (2223) tapes by field decay technique",

abstract = "We joined 19-multifilamentary Bi-2223 superconductor tapes and fabricated double-pancake coils by using resistive- and superconducting-joint methods. The critical current ratio (CCR) of the jointed tape and the decay characteristics, joint resistance, and n-value of the pancake coils were evaluated. The joint resistance of the coils was characterized by the field decay technique. It was observed that the CCR was higher in the joined tape made by the resistive-joint method, compared to that by the superconducting-joint method. On the other hand, joint resistance was measured to be 4 orders of magnitude smaller in the superconducting-joint coil; approximately 40% of critical current was retained in the persistent current mode and the joint resistance was 0.18 nΩ. Better and longer retention of the magnetic field in the superconducting-joint coil is believed to be due to the direct connection between the superconducting cores.",

author = "Kim, {Jung Ho} and Kim, {Kyu Tae} and Jang, {Seok Hern} and Jinho Joo and Seyong Choi and Wansoo Nah and Hyoungku Kang and Ko, {Tae Kuk} and Ha, {Hong Soo} and Oh, {Sang Soo} and Ryu, {Kang Sik} and Philip Nash",

note = "Funding Information: Manuscript received August 4, 2002. This work was supported by a grant from Center for Applied Superconductivity Technology of 21st Century Frontier R&D Program Funded by the Ministry of Science and Technology, Republic of Korea. J. H. Kim, K. T. Kim, S. H. Jang and J. Joo are with the School of Metallurgical and Materials Engineering, SungKyunKwan University, Suwon, Republic of Korea (e-mail: jinho@skku.ac.kr). S. Choi and W. Nah are with the School of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, Republic of Korea. H. Kang and T. K. Ko are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Republic of Korea. H.-S. Ha, S.-S. Oh and K.-S. Ryu are with the Applied Superconductivity Laboratory, Korea Electrotechnology Research Institute. Changwon, Republic of Korea. P. Nash is with the Thermal Processing Technology Center, Illinois Institute of Technology, Chicago, IL 60616 USA. Digital Object Identifier 10.1109/TASC.2003.812049; 2002 Applied Superconductivity Conference ; Conference date: 04-08-2002 Through 09-08-2002",

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AU - Kim, Jung Ho

AU - Kim, Kyu Tae

AU - Jang, Seok Hern

AU - Joo, Jinho

AU - Choi, Seyong

AU - Nah, Wansoo

AU - Kang, Hyoungku

AU - Ko, Tae Kuk

AU - Ha, Hong Soo

AU - Oh, Sang Soo

AU - Ryu, Kang Sik

AU - Nash, Philip

N1 - Funding Information: Manuscript received August 4, 2002. This work was supported by a grant from Center for Applied Superconductivity Technology of 21st Century Frontier R&D Program Funded by the Ministry of Science and Technology, Republic of Korea. J. H. Kim, K. T. Kim, S. H. Jang and J. Joo are with the School of Metallurgical and Materials Engineering, SungKyunKwan University, Suwon, Republic of Korea (e-mail: jinho@skku.ac.kr). S. Choi and W. Nah are with the School of Electrical and Computer Engineering, Sungkyunkwan University, Suwon, Republic of Korea. H. Kang and T. K. Ko are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Republic of Korea. H.-S. Ha, S.-S. Oh and K.-S. Ryu are with the Applied Superconductivity Laboratory, Korea Electrotechnology Research Institute. Changwon, Republic of Korea. P. Nash is with the Thermal Processing Technology Center, Illinois Institute of Technology, Chicago, IL 60616 USA. Digital Object Identifier 10.1109/TASC.2003.812049

PY - 2003/6

Y1 - 2003/6

N2 - We joined 19-multifilamentary Bi-2223 superconductor tapes and fabricated double-pancake coils by using resistive- and superconducting-joint methods. The critical current ratio (CCR) of the jointed tape and the decay characteristics, joint resistance, and n-value of the pancake coils were evaluated. The joint resistance of the coils was characterized by the field decay technique. It was observed that the CCR was higher in the joined tape made by the resistive-joint method, compared to that by the superconducting-joint method. On the other hand, joint resistance was measured to be 4 orders of magnitude smaller in the superconducting-joint coil; approximately 40% of critical current was retained in the persistent current mode and the joint resistance was 0.18 nΩ. Better and longer retention of the magnetic field in the superconducting-joint coil is believed to be due to the direct connection between the superconducting cores.

AB - We joined 19-multifilamentary Bi-2223 superconductor tapes and fabricated double-pancake coils by using resistive- and superconducting-joint methods. The critical current ratio (CCR) of the jointed tape and the decay characteristics, joint resistance, and n-value of the pancake coils were evaluated. The joint resistance of the coils was characterized by the field decay technique. It was observed that the CCR was higher in the joined tape made by the resistive-joint method, compared to that by the superconducting-joint method. On the other hand, joint resistance was measured to be 4 orders of magnitude smaller in the superconducting-joint coil; approximately 40% of critical current was retained in the persistent current mode and the joint resistance was 0.18 nΩ. Better and longer retention of the magnetic field in the superconducting-joint coil is believed to be due to the direct connection between the superconducting cores.

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DO - 10.1109/TASC.2003.812049

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SN - 1051-8223

VL - 13

SP - 2992

EP - 2995

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

IS - 2 III

T2 - 2002 Applied Superconductivity Conference

Y2 - 4 August 2002 through 9 August 2002

ER -

Measurement of joint properties of Bi(Pb)-Sr-Ca-Cu-O (2223) tapes by field decay technique

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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