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Quenches and resulting thermal and mechanical effects on epoxy impregnated Nb/sub 3/Sn high field magnets
By: Yamada, R.; Wake, M.; Rey, J.-M.; Wands, R.; Lee, A.; Kim, S.W.;
2001 / IEEE / 0-7803-7191-7
This item was taken from the IEEE Conference ' Quenches and resulting thermal and mechanical effects on epoxy impregnated Nb/sub 3/Sn high field magnets ' Thermal deformation and resulting mechanical stress due to quenches inside epoxy-impregnated Nb/sub 3/Sn high field magnets are studied with a combination of a quench simulation program, and the ANSYS program. We use the geometry of the high field cosine theta type dipole magnets with one meter and 10 meter length. The turns where quenches start are heated excessively, up to 100 K to 300 K, depending on the coil length and time delay. The non-quenching turns and surrounding material are not heated substantially. This large temperature gradient causes high local stress in the quenching conductors and their insulation material. The ANSYS program is used to calculate this response.
Epoxy-impregnated Nb/sub 3/sn High Field Magnets
Quench Simulation Program
High Local Stress
100 To 300 K
High Field Cosine Theta Type Dipole Magnets