Abstract
A slab model is used to investigate the effects of saturation of the superconducing filaments on the losses of multifilamentary superconductors exposed to a uniformly changing field. It is necessary to consider not only the saturated region (where J = J c ), and the superconducting region, but also the region in which current is transferred to the copper. The volume of this region can be about double that of the saturated region. The losses are in qualitative agreement with previous models for round wires, but it is shown that these models do not use the correct current distributions. Some analytic features of the correct solution are derived but a complete solution requires numerical computation.
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