On the design of magnetically insulated transmission lines for z-pinch loads

摘要

cqvip:Many papers have been published on the theory of magnetic insulation and the use of Zflow analysis of magnetically insulated transmission lines(MITLs).We describe herein a novel design process using the circuit code SCREAMER for a real-world MITL for z-pinch loads based on the Zflow model of magnetic insulation.In particular,we design a 15-TW,10-MA,100-ns double-disk transmission line using only circuit modeling tools and Z_(flow) analysis of the MITL.Critical issues such as current loss to the anode during the setup of magnetic insulation and the transition from a non-emitting vacuum power feed to an MITL play a large role in the MITL design.This very rapid design process allows us for the first time to explore innovative MITL designs such as variableimpedance MITLs that provide a significantly lower total inductance and improved energy delivery to the load.The tedious process of modeling the final MITL design with highly resolved 2D and 3D electromagnetic particle-in-cell codes occurs as a validation step,not as part of the design process.