Circuit modeling for PTS´s magnetically insulated transmission lines

PTS (Primary Test Stand) is an high-current accelerator for Z-pinch experiment in CAEP. In the paper a circuit model for its magnetically insulated transmission lines (MITLs) have been developed, in which all the PTS´s transmission line (TL) sections from water TLs, to vacuum insulator stack, to both outer and inner MITLs, and eventually to a wire array load, have been treated as a total of 273 TL elements with different transit time and impedance, among which comprise of 195 MITL elements. With aid of the model the performance of all these sections has been 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 for all these predicted results will await for the examination of future experiments.