Design consideration and optimization procedure for a no-insulation multi-width REBCO magnet

Y. G. Kim; S. Hahn; K. L. Kim; D. G. Yang; H. G. Lee

doi:10.1016/j.cap.2015.06.024

Design consideration and optimization procedure for a no-insulation multi-width REBCO magnet

Y. G. Kim, S. Hahn, K. L. Kim, D. G. Yang, H. G. Lee

Department of Materials Science and Engineering

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

16 Citations (Scopus)

Abstract

This paper reports the optimization procedure for a no-insulation (NI) multi-width (MW) REBCO magnet, which enables the fabrication of a highly compact and competitively priced superconducting magnet. In order to identify the design considerations for the NI-MW magnet, the electromagnetic performances of 3 different magnets were investigated using the finite element method (FEM). Based on the comparison results, it was verified that the critical current distribution-factor (CCD-factor), which is the ratio of the highest pancake critical current (I_c) to the lowest pancake I_c within the magnet, should be close to 1.00 for the MW configuration to be most effective. In the optimized MW magnet, the center B_z (7.54 T) remarkably exhibited an ∼ 51% increase compared to the 4-mm single width magnet (5.00 T). Furthermore, the CCD-factor of the optimized MW magnet was 1.04, which is quite close to 1.00, sufficiently demonstrating the validity of the optimization process and result.

Original language	English
Pages (from-to)	1134-1138
Number of pages	5
Journal	Current Applied Physics
Volume	15
Issue number	10
DOIs	https://doi.org/10.1016/j.cap.2015.06.024
Publication status	Published - 2015 Oct 4

Keywords

CCD-factor
HTS magnet
Multi-width
No-insulation
Optimization

ASJC Scopus subject areas

Materials Science(all)
Physics and Astronomy(all)

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10.1016/j.cap.2015.06.024

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title = "Design consideration and optimization procedure for a no-insulation multi-width REBCO magnet",

abstract = "This paper reports the optimization procedure for a no-insulation (NI) multi-width (MW) REBCO magnet, which enables the fabrication of a highly compact and competitively priced superconducting magnet. In order to identify the design considerations for the NI-MW magnet, the electromagnetic performances of 3 different magnets were investigated using the finite element method (FEM). Based on the comparison results, it was verified that the critical current distribution-factor (CCD-factor), which is the ratio of the highest pancake critical current (Ic) to the lowest pancake Ic within the magnet, should be close to 1.00 for the MW configuration to be most effective. In the optimized MW magnet, the center Bz (7.54 T) remarkably exhibited an ∼ 51% increase compared to the 4-mm single width magnet (5.00 T). Furthermore, the CCD-factor of the optimized MW magnet was 1.04, which is quite close to 1.00, sufficiently demonstrating the validity of the optimization process and result.",

keywords = "CCD-factor, HTS magnet, Multi-width, No-insulation, Optimization",

author = "Kim, {Y. G.} and S. Hahn and Kim, {K. L.} and Yang, {D. G.} and Lee, {H. G.}",

note = "Funding Information: This work was supported by the Materials and Components Technology Development Program of KEIT [10053590, Development of MgB2 wire and coil with high critical current and long length for superconducting medical electric power equipment]. Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.All rights reserved.",

year = "2015",

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day = "4",

doi = "10.1016/j.cap.2015.06.024",

language = "English",

volume = "15",

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AU - Kim, Y. G.

AU - Hahn, S.

AU - Kim, K. L.

AU - Yang, D. G.

AU - Lee, H. G.

N1 - Funding Information: This work was supported by the Materials and Components Technology Development Program of KEIT [10053590, Development of MgB2 wire and coil with high critical current and long length for superconducting medical electric power equipment]. Publisher Copyright: © 2015 Elsevier B.V.All rights reserved.

PY - 2015/10/4

Y1 - 2015/10/4

N2 - This paper reports the optimization procedure for a no-insulation (NI) multi-width (MW) REBCO magnet, which enables the fabrication of a highly compact and competitively priced superconducting magnet. In order to identify the design considerations for the NI-MW magnet, the electromagnetic performances of 3 different magnets were investigated using the finite element method (FEM). Based on the comparison results, it was verified that the critical current distribution-factor (CCD-factor), which is the ratio of the highest pancake critical current (Ic) to the lowest pancake Ic within the magnet, should be close to 1.00 for the MW configuration to be most effective. In the optimized MW magnet, the center Bz (7.54 T) remarkably exhibited an ∼ 51% increase compared to the 4-mm single width magnet (5.00 T). Furthermore, the CCD-factor of the optimized MW magnet was 1.04, which is quite close to 1.00, sufficiently demonstrating the validity of the optimization process and result.

AB - This paper reports the optimization procedure for a no-insulation (NI) multi-width (MW) REBCO magnet, which enables the fabrication of a highly compact and competitively priced superconducting magnet. In order to identify the design considerations for the NI-MW magnet, the electromagnetic performances of 3 different magnets were investigated using the finite element method (FEM). Based on the comparison results, it was verified that the critical current distribution-factor (CCD-factor), which is the ratio of the highest pancake critical current (Ic) to the lowest pancake Ic within the magnet, should be close to 1.00 for the MW configuration to be most effective. In the optimized MW magnet, the center Bz (7.54 T) remarkably exhibited an ∼ 51% increase compared to the 4-mm single width magnet (5.00 T). Furthermore, the CCD-factor of the optimized MW magnet was 1.04, which is quite close to 1.00, sufficiently demonstrating the validity of the optimization process and result.

KW - CCD-factor

KW - HTS magnet

KW - Multi-width

KW - No-insulation

KW - Optimization

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JF - Current Applied Physics

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Design consideration and optimization procedure for a no-insulation multi-width REBCO magnet

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Keywords

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