In this paper, we have studied the shielding properties of a high temperature superconducting (HTS) bulk tube-shaped cylinder in varying magnetic fields. Within this scope, we have simulated the hollow cylinder geometry in axis-symmetric finite element method (FEM) in which the electromagnetic properties of a HTS are described by a nonlinear electric field-current density (E − J) power law including a critical current density depending on magnetic field. In the first stage, we have analyzed temperature dependence of shielding factor (SF), which is described as the ratio of the applied magnetic field to the magnetic field in the center of the hollow cylinder. In the second stage, the effect of magnetic field’s sweep rate (dB_app/dt) on the magnetic shielding was numerically examined. In the final stage, using the certain lines over the superconducting tube, we have worked out the shielding field (B_sz) of the HTS tube by subtracting the z-component of magnetic field (B_z) from applied magnetic field (B_app). Our numerical investigations indicate that the superconducting tube can provide field and temperature-controlled magnetic shielding.

在本文中，我们研究了高温超导（HTS）大块管状圆柱体在变化磁场中的屏蔽性能。在此范围内，我们使用轴对称有限元方法（FEM）模拟了空心圆柱体的几何形状，其中，HTS的电磁特性由包含临界电流的非线性电场-电流密度（E  -  J）功率定律描述密度取决于磁场。在第一阶段，我们分析了屏蔽系数（SF）的温度依赖性，该系数被描述为施加的磁场与空心圆柱体中心的磁场之比。在第二阶段，磁场扫描速率的影响（dB _app / dt）在磁屏蔽上进行了数值检查。在最后阶段，我们使用超导管上的某些线，通过从施加的磁场（B _app）中减去磁场的z分量（B _z），得出了HTS管的屏蔽场（B _sz）。。我们的数值研究表明，超导管可以提供磁场和温度控制的磁屏蔽。