Performance test of a CuNb reinforced (Nb, Ti)3Sn coil fabricated by the react and wind method

Satoshi Awaji; Kazuo Watanabe; Gen Nishijima; Kohki Takahashi; Mitsuhiro Motokawa; Kazunori Jikihara; Hiroyuki Sugizaki; Junji Sakuraba

doi:10.1109/TASC.2002.1018734

Performance test of a CuNb reinforced (Nb, Ti)₃Sn coil fabricated by the react and wind method

Satoshi Awaji, Kazuo Watanabe, Gen Nishijima, Kohki Takahashi, Mitsuhiro Motokawa, Kazunori Jikihara, Hiroyuki Sugizaki, Junji Sakuraba

High Field Laboratory for Superconducting Materials

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

9 Citations (Scopus)

Abstract

In order to investigate the stress-strain and superconducting properties for a react and wind method under large electromagnetic stress states, a test coil with a large bore was fabricated using the highly strengthened CuNb/(Nb, Ti)₃Sn wire. We found that the analysis on the basis of the bending and tensile strains successfully explains the obtained mechanical properties. The operation currents could be applied, until the electromagnetic stress and strain became about 340 MPa and 0.34%, respectively. This is mainly due to not only the strong mechanical property of CuNb/(Nb, Ti)₃Sn wire but also the compression stress induced by the thermal contraction. As a result of the bending and tensile strain analysis for the critical current, the ratio of the quench current to the critical current was about 86% at 11 T and then decreased with decreasing magnetic fields.

Original language	English
Pages (from-to)	1697-1700
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	12
Issue number	1
DOIs	https://doi.org/10.1109/TASC.2002.1018734
Publication status	Published - 2002 Mar
Event	17th Annual Conference on Magnet Technology - Geneva, Switzerland Duration: 2001 Sep 24 → 2001 Sep 28

Keywords

Critical current
High strength NbSn wire
React and wind method
Strain effect

ASJC Scopus subject areas

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

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Performance test of a CuNb reinforced (Nb, Ti)₃Sn coil fabricated by the react and wind method. / Awaji, Satoshi; Watanabe, Kazuo; Nishijima, Gen; Takahashi, Kohki; Motokawa, Mitsuhiro; Jikihara, Kazunori; Sugizaki, Hiroyuki; Sakuraba, Junji.

In: IEEE Transactions on Applied Superconductivity, Vol. 12, No. 1, 03.2002, p. 1697-1700.

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

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abstract = "In order to investigate the stress-strain and superconducting properties for a react and wind method under large electromagnetic stress states, a test coil with a large bore was fabricated using the highly strengthened CuNb/(Nb, Ti)3Sn wire. We found that the analysis on the basis of the bending and tensile strains successfully explains the obtained mechanical properties. The operation currents could be applied, until the electromagnetic stress and strain became about 340 MPa and 0.34%, respectively. This is mainly due to not only the strong mechanical property of CuNb/(Nb, Ti)3Sn wire but also the compression stress induced by the thermal contraction. As a result of the bending and tensile strain analysis for the critical current, the ratio of the quench current to the critical current was about 86% at 11 T and then decreased with decreasing magnetic fields.",

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AU - Awaji, Satoshi

AU - Watanabe, Kazuo

AU - Nishijima, Gen

AU - Takahashi, Kohki

AU - Motokawa, Mitsuhiro

AU - Jikihara, Kazunori

AU - Sugizaki, Hiroyuki

AU - Sakuraba, Junji

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N2 - In order to investigate the stress-strain and superconducting properties for a react and wind method under large electromagnetic stress states, a test coil with a large bore was fabricated using the highly strengthened CuNb/(Nb, Ti)3Sn wire. We found that the analysis on the basis of the bending and tensile strains successfully explains the obtained mechanical properties. The operation currents could be applied, until the electromagnetic stress and strain became about 340 MPa and 0.34%, respectively. This is mainly due to not only the strong mechanical property of CuNb/(Nb, Ti)3Sn wire but also the compression stress induced by the thermal contraction. As a result of the bending and tensile strain analysis for the critical current, the ratio of the quench current to the critical current was about 86% at 11 T and then decreased with decreasing magnetic fields.

AB - In order to investigate the stress-strain and superconducting properties for a react and wind method under large electromagnetic stress states, a test coil with a large bore was fabricated using the highly strengthened CuNb/(Nb, Ti)3Sn wire. We found that the analysis on the basis of the bending and tensile strains successfully explains the obtained mechanical properties. The operation currents could be applied, until the electromagnetic stress and strain became about 340 MPa and 0.34%, respectively. This is mainly due to not only the strong mechanical property of CuNb/(Nb, Ti)3Sn wire but also the compression stress induced by the thermal contraction. As a result of the bending and tensile strain analysis for the critical current, the ratio of the quench current to the critical current was about 86% at 11 T and then decreased with decreasing magnetic fields.

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KW - High strength NbSn wire

KW - React and wind method

KW - Strain effect

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