Design, manufacturing, and testing of a Nb3Sn coil employing Ti alloy as structural material
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Data
2002-03-01
Autores
Baldan, C. A.
Shigue, C. Y.
Pinatti, D. G.
Ruppert, E.
Título da Revista
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Título de Volume
Editor
Institute of Electrical and Electronics Engineers (IEEE)
Resumo
We describe the design, manufacturing, and testing results of a Nb3Sn superconducting coil in which TiAIV alloys were used instead of stainless steel to reduce the magnetization contribution caused by the heat treatment for the A-15 Nb-3 Sn phase formation that affects the magnetic field homogeneity. Prior to the coil manufacturing several structural materials were studied and evaluated in terms of their mechanical and magnetic properties in as-worked, welded, and heat-treated conditions. The manufacturing process employed the wind-and-react technique followed by vacuum-pressure impregnation(VPI) at 1 MPa atm. The critical steps of the manufacturing process, besides the heat treatment and impregnation, are the wire splicing and joint manufacturing in which copper posts supported by Si3N4 ceramic were used. The coil was tested with and without a background NbTi coil and the results have shown performance exceeding the design quench current confirming the successful coil construction.
Descrição
Palavras-chave
high magnetic field, magnetic materials, Nb3Sn, NbTi, superconducting magnet
Como citar
IEEE Transactions on Applied Superconductivity. New York: IEEE-Inst Electrical Electronics Engineers Inc., v. 12, n. 1, p. 443-446, 2002.