Open AccessPulse loss front in coaxial cylinder vacuum magnetically insulated transmission lines under different voltages
Author(s) -
Zhou Jun,
Peng-Fei Zhang,
Hu Yang,
Jie Sun,
Jianfeng Sun,
Su Zhaofeng,
Wandong Liu
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.245203
Subject(s) - coaxial , anode , physics , current (fluid) , voltage , cathode , transmission line , mechanics , power (physics) , cylinder , optics , materials science , computational physics , electrical engineering , electrode , mathematics , quantum mechanics , engineering , geometry , thermodynamics
Based on the relativistic Brillouin flow theory, electron current and power loss in loss-front stage of coaxial cylinder vacuum magnetically insulated transmission line (MITL) are deduced under limiting current approximation. Through the particle-in-cell (PIC) model, loss currents and loss powers under different anode voltages are simulated. Simulation and theory results show that the proportions of loss current and loss power to the total current and power decrease when cathode-anode voltage increases. Beyond 4MV, limiting current approximation fits simulation results better than minimum current approximation. At voltages higher than 10 MV, relative error from limiting approximation is under 10%, while it exceeds 50% under minimum current approximation. This work is meaningful for establishing full circuit simulation of MITL system.