初级试验平台磁绝缘传输线的电路模拟
Circuit modeling for magnetically insulated transmission lines on primary test stand
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摘要: 初级试验平台磁绝缘传输线的电路模拟描述了电压脉冲从水传输线、绝缘堆、内外磁绝缘传输线到丝阵负载的传播及作用过程。在模拟中将脉冲传输经过的所有电路结构，等效成具有不同电长度及阻抗的273个传输线单元，其中包括195个磁绝缘传输线单元；通过计算得到了各个传输线单元的传导电流、界面电压，磁绝缘传输线单元的损失电流、流动阻抗、接地电阻，以及丝阵负载内爆过程中的半径变化、电流及电压等，并对主要计算结果进行了分析比较。模拟结果的可靠性及精度有待于相关实验结果的检验。Abstract: Primary test stand(PTS) is an underway highcurrent accelerator for Z-pinch experiment in CAEP. In the paper a circuit model have been developed, in which all the PTS's transmission line sections from water transmission lines, to vacuum insulator stack, to both outer and inner MITL, and eventually to a wire array load, have been treated as a total of 273 transmission line elements with different transit time and impedance, among which are 195 MITL elements. With the aid of a circuit model the performance of all these sections were predicted and discussed, including conducting current, interface voltage, loss current, flow impedance and grounded resistor of each MITL element, as well as the dynamic characteristics of the wire array load. The reliability and accuracy of all thes predicted r
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