Size Effect of Magnetizing Solenoid Coil for Pulsed Field Magnetization on the Trapped Field on Superconducting Bulk

We have investigated experimentally and numerically the trapped field B_z and temperature rise ΔT on the superconducting bulk with homogeneous critical current density, J_c magnetized by the pulsed field using the solenoid coils with different inner and outer diameters. The B_z was experimentally enhanced and the ΔT was reduced using the coil with a smaller inner diameter. However, the size effects of the coil on the numerically estimated B_z and ΔT were pretty small and the results of the simulation cannot reproduce the experimental ones. The inhomogeneous distribution of the J_c certainly exists in the real bulk, and the in- homogeneous flux intrusion influences on the experimental results of B_z and ΔT.