Experiment and numerical analysis on temporal stability of a bitter-like HTS magnet excited by MPFM

Prime Archives in Physical Sciences Pub Date : 2019-09-01 DOI:10.1063/1.5112148

Xi Yuan, Yinshun Wang, Yueyin Wang, Yukai Qiao, Changtao Kan, Wei Pi

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引用次数: 1

Abstract

A full high temperature superconducting (HTS) magnet can operate in persistent current mode (PCM), which has promising application in high magnetic field. A laboratory scale Bitter-like HTS magnet stacked by REBaCuO (RE: rare earth element) annular plates was proposed and it can operate in PCM without current lead and joint resistance. This study focuses on the temporal stability of the magnetic field generated by the magnet, which was energized by the multi-pulsed field magnetization (MPFM) method composed of a solenoid coil and pulsed triangular waveform current source and tested at 77 K (LN2 bath). The characteristics of the magnetic field in the magnet with various pulsed current amplitudes, durations and reversal excitation experiments were systematically researched. Moreover, the numerical simulation of the magnet energized with the pulsed current amplitude 3A was performed and the attenuation of the magnetic field in the magnet was discussed and analyzed.A full high temperature superconducting (HTS) magnet can operate in persistent current mode (PCM), which has promising application in high magnetic field. A laboratory scale Bitter-like HTS magnet stacked by REBaCuO (RE: rare earth element) annular plates was proposed and it can operate in PCM without current lead and joint resistance. This study focuses on the temporal stability of the magnetic field generated by the magnet, which was energized by the multi-pulsed field magnetization (MPFM) method composed of a solenoid coil and pulsed triangular waveform current source and tested at 77 K (LN2 bath). The characteristics of the magnetic field in the magnet with various pulsed current amplitudes, durations and reversal excitation experiments were systematically researched. Moreover, the numerical simulation of the magnet energized with the pulsed current amplitude 3A was performed and the attenuation of the magnetic field in the magnet was discussed and analyzed.

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MPFM激励下苦味型高温超导磁体时间稳定性的实验与数值分析

全高温超导磁体可以在恒流模式下工作，在高磁场中具有广阔的应用前景。提出了一种实验室规模的REBaCuO (RE:稀土元素)环形板堆叠的苦味型高温超导磁体，该磁体可在PCM中工作，无电流引线和连接电阻。本研究重点研究了磁体产生磁场的时间稳定性，该磁体采用由电磁线圈和脉冲三角形波形电流源组成的多脉冲场磁化(MPFM)方法通电，并在77 K (LN2)下进行了测试。系统地研究了不同脉冲电流幅值、持续时间和反向励磁实验下磁体内磁场的特性。此外，对脉冲电流幅值为3A的磁体进行了数值模拟，并对磁体中磁场的衰减进行了讨论和分析。全高温超导磁体可以在恒流模式下工作，在高磁场中具有广阔的应用前景。提出了一种实验室规模的REBaCuO (RE:稀土元素)环形板堆叠的苦味型高温超导磁体，该磁体可在PCM中工作，无电流引线和连接电阻。本研究重点研究了磁体产生磁场的时间稳定性，该磁体采用由电磁线圈和脉冲三角形波形电流源组成的多脉冲场磁化(MPFM)方法通电，并在77 K (LN2)下进行了测试。系统地研究了不同脉冲电流幅值、持续时间和反向励磁实验下磁体内磁场的特性。此外，对脉冲电流幅值为3A的磁体进行了数值模拟，并对磁体中磁场的衰减进行了讨论和分析。

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Prime Archives in Physical Sciences

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