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感应加速腔有径向馈入和轴向馈入两种常用的脉冲功率馈入方式。在理论上分析了不同功率馈入方式对感应加速腔输出电压平顶的影响,并对分析结果进行实验论证。实验采用1B2C结构,用相同的脉冲功率源馈入径向腔和轴向腔,测量此两种加速腔的电压波形。测得轴向腔±1%电压平顶时间为61 ns,径向腔±1%电压平顶时间为62 ns,两种腔都可满足±1%电压平顶大于60 ns的要求。此外对不同功率馈入方式导致的横向阻抗的变化进行了数值模拟,分别计算了采用这两种馈入方式的加速腔模型的横向阻抗,发现轴向加速腔的横向阻抗较小。
Induction accelerating chamber with radial and axial feed-in two commonly used pulse power feed. In theory, the influence of different power feeding modes on the output voltage flat roof of induction accelerating chamber is analyzed, and the experimental results are demonstrated. The experiment adopts 1B2C structure, feeds the radial cavity and the axial cavity with the same pulse power source, measures the voltage waveform of these two kinds of accelerating cavities. Measured ± 1% axial voltage flat top time of 61 ns, ± 1% of the radial cavity voltage flat top time of 62 ns, both types of cavities can meet ± 1% voltage flat top greater than 60 ns requirements. In addition, the lateral impedance changes caused by different power feeding modes are numerically simulated. The transverse impedance of the accelerometer model using these two feeding modes is calculated respectively. The transverse impedance of the axial accelerating chamber is found to be small.