Long length calorimetric measurement of AC losses of Bi-2223 external field oriented perpendicular to the tape width

AC applications are projected to be a significant market for HTS conductor. The AC magnetic fields perpendicular to the wide face of Bi-2223 conductor (or parallel to the crystallographic c-axis of the oxide superconductor) are responsible for a significant portion of the total loss in AC coils. ASC has developed a calorimetric apparatus which can measure long lengths of conductor in a uniform continuous perpendicular field. This apparatus provides Accurate measurement of interfilament or interstrand coupling losses. Calorimetric measurements from long lengths of twisted multifilamentary conductor are presented.