Thermal stability of superconducting multifilamentary wire with multiply connected stabilizing regions

Abstract

The thermal stability conditions of a round strand consisting of superconducting multifilamentary wire with multiply connected stabilizing regions are treated theoretically. The critical disturbance energies that specify the upper limit of allowed heat generation have been calculated using a model based on the solution of the heat equation with non-homogenizing thermal properties. The computational results show that critical energies depend on the location of the heat source into the wire. It is also demonstrated that there is no essential effect on stability conditions for different locations of the superconductor in the strand cross section as long as the filling factor is constant. However, the conditions of stability can change if the filling factor is altered in accordance with variation of location of superconductor in the wire cross section. Detailed investigations of similar states are executed.