Design of CCT6: A Large Aperture, Nb 3Sn Dipole Magnet for HTS Insert Testing

We present the design of a four-layer, Canted Cosine Theta (CCT) Nb<inline-formula><tex-math notation="LaTeX">_3</tex-math></inline-formula>Sn dipole magnet as part of the general R&D program for high field superconducting magnets supported by the US Magnet Deve...

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Bibliographic Details
Published inIEEE transactions on applied superconductivity Vol. 32; no. 6; pp. 1 - 5
Main Authors Brouwer, L., Juchno, M., Arbelaez, D., Ferracin, P., Vallone, G.
Format Journal Article
LanguageEnglish
Published IEEE 01.09.2022
Subjects
Accelerator magnets
canted-cosine-theta
Conductors
High-temperature superconductors
Iron
Magnetomechanical effects
Stress
Superconducting magnets
Windings
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Summary:We present the design of a four-layer, Canted Cosine Theta (CCT) Nb<inline-formula><tex-math notation="LaTeX">_3</tex-math></inline-formula>Sn dipole magnet as part of the general R&D program for high field superconducting magnets supported by the US Magnet Development Program (US-MDP). Future testing with High-Temperature Superconducting (HTS) inserts in a hybrid configuration motivates the design's large clear aperture of 120 mm and target operating dipole field of 12 T at 4.2 K. First, we present a graded magnetic design utilizing existing Nb<inline-formula><tex-math notation="LaTeX">_3</tex-math></inline-formula>Sn cables which results in 30% operating current margin at the target field. We then share results from a 2D mechanical analysis which makes use of an idealized external structure to provide initial guidance for design studies. This mechanical analysis is extended to demonstrate compatibility of the CCT6 design with a mechanical support structure, based on key and bladder technology, currently considered for use within multiple US-MDP high-field magnet programs.
ISSN:1051-8223
DOI:10.1109/TASC.2022.3151723