5 T pulsed magnetic field generator of the Flash-Ⅱ accelerator
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摘要: 为了满足闪光二号加速器材料热力学效应研究的新需求，设计了一套电容器储能型脉冲强磁场装置。装置主要由储能电容器、半导体放电开关、磁场线圈及高压恒流充电源组成。磁场线圈中心处最大磁感应强度可达5 T，并且可以通过调整磁场线圈与二极管的相对位置实现磁透镜比的调节。通过理论计算和数值模拟相结合的方法对脉冲强磁场的关键参数进行了分析，然后进行了脉冲强磁场的工程设计，最后使用该强磁场装置进行了实验研究。强磁场实验中，当储能电容器充电21 kV时，在磁场线圈中心处获得了5.3 T脉冲强磁场。Abstract: For the requirements of thermodynamic effect research, a high magnetic field system was designed. The high magnetic field system is consisted of four components: capacitor bank, semiconducting output switch, magnetic coil and high voltage power supply. The designed max magnetic field is 5 T and the magnetic lens ratio could be adjusted by changing the distance between magnetic coil and diode. Key parameters of the magnetic field are investigated by theoretical analysis and numerical simulation. Based on the theoretical analysis and numerical results, a high magnetic field generator has been manufactured. The experiments with the generator show that when the capacitor bank is charged to 20 kV, the max magnetic induction intensity at the coil center is 5.3 T.
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