Numerical Evaluation of AC Loss in NbTi/YBCO Composite Slab under Parallel Field

This paper describes the numerical results of AC loss of LTS/HTS composite superconducting slab, made of NbTi and YBCO conductors by welding together, under external AC magnetic field. The hysteresis loss characteristics of the LTS/HTS composite slab including the losses of its LTS and HTS parts are also discussed under parallel oscillating field.