A study on recovery characteristics of joined tapes from the view of thermal and electrical variation for superconducting magnets

Hyung Jun Kim; Young Jin Hwang; Sukjin Choi; Haigun Lee; Tae Kuk Ko

doi:10.1109/TASC.2012.2184831

A study on recovery characteristics of joined tapes from the view of thermal and electrical variation for superconducting magnets

Hyung Jun Kim, Young Jin Hwang, Sukjin Choi, Haigun Lee, Tae Kuk Ko

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

In order to assemble a magnet using second generation (2G) high temperature superconducting (HTS) tapes, one usually stacks the pancakes using the joint method. When joining the tape, it is important to keep the initial characteristics of the original tape. When two tapes are joined, appropriate pressure should be applied to each tape. The reason is that insufficient or excessive forces on the joined surface affect the inherent characteristics of each tape, such as the critical current and the n-value. The generated heat flux on the joined tapes is related to the quench occurrence when the magnet is affected by unexpected disturbance. In this study, the effect of the external disturbance on the joined tapes was examined. The experiments were carried out with a single tape and two kinds of joined tapes. The joints were exposed to various pressures. The stability and recovery characteristics of the experimental samples were analyzed and compared with each other.

Original language	English
Article number	4703505
Journal	IEEE Transactions on Applied Superconductivity
Volume	22
Issue number	3
DOIs	https://doi.org/10.1109/TASC.2012.2184831
Publication status	Published - 2012

Bibliographical note

Funding Information:
Manuscript received September 13, 2011; accepted January 14, 2012. Date of publication March 05, 2012; date of current version May 24, 2012. This work was supported by the Mid-career Researcher Program through an NRF grant funded by the MEST (2009-0085369). H. J. Kim, Y. J. Hwang, S. Choi, and T. K. Ko are with the School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea (e-mail: [email protected]). H. Lee is with Department of Materials Science and Engineering, Korea University, Seoul 136-713, Korea. Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TASC.2012.2184831

Keywords

High T superconductors
YBCO
joint
recovery
stability

ASJC Scopus subject areas

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

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10.1109/TASC.2012.2184831

Cite this

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title = "A study on recovery characteristics of joined tapes from the view of thermal and electrical variation for superconducting magnets",

abstract = "In order to assemble a magnet using second generation (2G) high temperature superconducting (HTS) tapes, one usually stacks the pancakes using the joint method. When joining the tape, it is important to keep the initial characteristics of the original tape. When two tapes are joined, appropriate pressure should be applied to each tape. The reason is that insufficient or excessive forces on the joined surface affect the inherent characteristics of each tape, such as the critical current and the n-value. The generated heat flux on the joined tapes is related to the quench occurrence when the magnet is affected by unexpected disturbance. In this study, the effect of the external disturbance on the joined tapes was examined. The experiments were carried out with a single tape and two kinds of joined tapes. The joints were exposed to various pressures. The stability and recovery characteristics of the experimental samples were analyzed and compared with each other.",

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N2 - In order to assemble a magnet using second generation (2G) high temperature superconducting (HTS) tapes, one usually stacks the pancakes using the joint method. When joining the tape, it is important to keep the initial characteristics of the original tape. When two tapes are joined, appropriate pressure should be applied to each tape. The reason is that insufficient or excessive forces on the joined surface affect the inherent characteristics of each tape, such as the critical current and the n-value. The generated heat flux on the joined tapes is related to the quench occurrence when the magnet is affected by unexpected disturbance. In this study, the effect of the external disturbance on the joined tapes was examined. The experiments were carried out with a single tape and two kinds of joined tapes. The joints were exposed to various pressures. The stability and recovery characteristics of the experimental samples were analyzed and compared with each other.

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A study on recovery characteristics of joined tapes from the view of thermal and electrical variation for superconducting magnets

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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