Current Transfer Length of Quasi-Isotropic Strand at Low Temperature

In practical applications, the stacking pattern of superconducting tapes has vital influence on the loss and the current quality of superconducting conductors during the current transmission. Based on the structure of quasi-isotropic superconducting strand (Q-IS), the distribution of magnetic field at the ends of the strand is simulated and measured. In order to investigate the distinction for different structures, a kind of quasi-isotropic superconducting strand made by REBCO coated conductors (CC) only (Q-IS1), and the other kind of quasi-isotropic superconducting strand stacked by copper tapes and REBCO CCs alternately (Q-IS2) are studied. Results show that Q-IS1 has better current transfer performance.