High temperature superconducting (HTS) magnets have widespread applications in a strong and steady magnetic field at low temperature. However, they can not be operated in persistent current mode (PCM) due to their immature joint technique without resistance. In order to realize the PCM, an HTS magnet stacked by double-hole rectangular HTS plates was proposed and fabricated. The trapped field of the HTS magnet was measured and simulated under four kinds of magnetization methods, field cooling (FC), zero field cooling (ZFC) and inner magnetization (a solenoid is placed at right/left hole of double-hole rectangular HTS magnet to magnetize HTS magnet) as well as combination of both methods. Meanwhile, the H-formulation is applied to the 3D model to analyze the electromagnetic behaviour. It was found that the trapped field of double-hole rectangular HTS magnet magnetized by FC with inner magnetization or ZFC with inner magnetization is higher than pure FC or ZFC magnetization. In inner magnetization, the trapped field of one hole in HTS magnet has no effect on the other one. In addition, the experiment results are in good agreement with numerical analysis, which can provide significant references for the magnetization method.

中文翻译：

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使用四种磁化方法的具有两个孔的HTS磁体的俘获场特性

高温超导（HTS）磁体在低温下的强而稳定的磁场中具有广泛的应用。但是，由于其未成熟的连接技术且没有电阻，因此无法在持久电流模式（PCM）下运行。为了实现PCM，提出并制造了由双孔矩形HTS板堆叠的HTS磁体。用场致冷（FC），零场致冷（ZFC）和内部磁化（在双孔矩形HTS磁体的右/左孔中放置螺线管）四种磁化方法测量和模拟HTS磁体的俘获场磁化高温超导磁体）以及两种方法的组合。同时，将H公式应用于3D模型以分析电磁行为。研究发现，内部充磁的FC或内部充磁的ZFC充磁的双孔矩形高温超导磁体的俘获场大于纯FC或ZFC的充磁。在内部磁化中，高温超导磁体中一个孔的俘获场对另一孔没有影响。另外，实验结果与数值分析吻合良好，可为磁化方法提供重要参考。