Development of a desktop type superconducting bulk magnet
Development of a desktop type superconducting bulk magnet
复制标题
台式超导块体磁体的研制
DOI：
10.1109/tasc.2016.2519278
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发表时间：
2016
影响因子：
1.8
通讯作者：
T. Oka
中科院分区：
文献类型：
--
作者：
K. Yokoyama;Eranda Kulawansha;Zhao Yuanding;T. Oka
我们使用斯特林制冷机开发了一种桌面型超导块状磁体，旨在使系统小型化。该冰箱结构紧凑，能源效率高，因为外部不需要压缩机；功耗约为160 W。此外，通过将激活方法限制为脉冲场磁化来减少磁极的长度。将直径为 45 毫米、厚度为 20 毫米的 GdBCO 散装材料固定在冰箱的冷台上，并用真空室覆盖。样品在大约 4.5 小时内从室温冷却至 52.3 K。当施加幅度从 0.8 到 7.0 T 的单脉冲场时，在 7.0 T 的施加场中，最大俘获场约为 2.8 T，位于块体表面的中心。此外，腔室表面的最大磁场约为 1.3 T，总磁通量为 0.94 mWb。充磁后工作状态良好，工作声音小。
We developed a desktop-type superconducting bulk magnet using a Stirling cryocooler with the aim of miniaturizing the system. This refrigerator was compact and highly energy efficient because a compressor was not needed outside; power consumption was approximately 160 W. Moreover, the length of the magnetic pole was decreased by restricting the activation method to pulsed field magnetization. A GdBCO bulk material 45 mm in diameter and 20 mm thick was attached to the cold stage of a refrigerator and was covered with a vacuum chamber. The sample was cooled from room temperature to 52.3 K in approximately 4.5 h. When a single pulsed field was applied in amplitudes varying from 0.8 to 7.0 T, the maximum trapped field was approximately 2.8 T at the center of the bulk surface in the applied field of 7.0 T. Moreover, the maximum magnetic field on the chamber's surface was approximately 1.3 T, and the total magnetic flux was 0.94 mWb. The operational status after magnetization was good, and the operating sound was small.