Study on index loss of HTS magnet

An analysis of the characteristic on index loss of high-temperature superconducting (HTS) magnet was carried out. The index loss of a HTS magnet including 20 double-pancake coils at 20 K was analyzed using numerical simulation. The index loss of every double-pancake coil and every single turn was calculated. The trend of the index loss of the magnet with increasing current was studied. The magnetic field on the magnet was varied by adding iron yokes at the two ends of the magnet. The result from this change shows that the index loss of magnet decreases efficiently with iron yokes.