“神龙二号”直线感应加速器加速腔电路模拟

针对神龙二号直线感应加速器所采用的非晶磁芯感应加速腔，建立了能够兼顾结构参数和磁芯性能的加速腔电路模型。对与加速腔结构相关的各集总电容参数进行了计算，并通过模拟波形与实验电压电流波形的对比，确定了加速腔磁芯模块的参数设定，实现了对非晶磁芯感应加速腔脉冲励磁过程较为准确的模拟。通过电路模拟，可以得到脉冲励磁时加速腔各部分的电压电流分布，为加速腔的结构优化和故障原因分析提供了有效的手段。

Circuit simulation of the Dragon-Ⅱ’s induction cavity

A circuit model is built to simulate the performance of the Dragon-Ⅱs induction cavity filled with the amorphous magnetic cores. The equivalent capacitances which correlate with the cavity structure are figured out, and the parameters of each magnetic cores circuit module are fixed on by modulating these parameters to make the simulation waveforms match the experiment voltage and current waveforms. With these initialized parameters, the circuit model can simulate the process of the cavitys excitation exactly. The detail of the voltage and current in different positions of the induction cavity, which cannot be probed in experiment, can be worked out by circuit simulation, and it is much useful for structure optimization and fault analysis of the cavity.