Eddy current losses in multiwire superconductors duel to external perpendicular magnetic field

Approximate method is presented of calculation of eddy current losses in a multiwire superconductor from an ac magnetic field perpendicular to the conductor axis, based on the solution of the equivalent magnetic circuit. The results of the solution show that the loss power output of the eddy currents from this field is neglibible inside the wire zone. A relatively greater loss power output appears in the stabilizing sheath of the conductor if it has greater thickness. The thickness of the stabilizing sheath influences the loss power outut proportionally to the third and fourth powers. (authors). 5 figs., 2 tabs., 5 refs