Thermomechanical Behavior of the HL-LHC 11 Tesla Nb3Sn Magnet Coil Constituents during Reaction Heat Treatment

The knowledge of the temperature induced changes of the superconductor volume, and of the thermo-mechanical behaviour of the different coil and tooling materials is required for predicting the coil geometry and the stress distribution in the coil after the Nb3Sn reaction heat treatment. In the prese...

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Veröffentlicht in:	arXiv.org 2017-11
Hauptverfasser:	Scheuerlein, C, Lackner, F, Savary, F, Rehmer, B, Finn, M, Meyer, C
Format:	Artikel
Sprache:	eng
Schlagworte:	Constituents Dipoles Heat treatment Magnet coils Mechanical properties Physics - Materials Science Shear modulus Stress concentration Stress distribution Thermal expansion Thermomechanical properties Tooling
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Zusammenfassung:	The knowledge of the temperature induced changes of the superconductor volume, and of the thermo-mechanical behaviour of the different coil and tooling materials is required for predicting the coil geometry and the stress distribution in the coil after the Nb3Sn reaction heat treatment. In the present study we have measured the Young's and shear moduli of the HL-LHC 11 T Nb3Sn dipole magnet coil and reaction tool constituents during in situ heat cycles with the dynamic resonance method. The thermal expansion behaviours of the coil components and of a free standing Nb3Sn wire were compared based on dilation experiments.
ISSN:	2331-8422
DOI:	10.48550/arxiv.1711.07022