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Pulse loss front in coaxial cylinder vacuum magnetically insulated transmission lines under different voltages

Zhou Jun Zhang Peng-Fei Yang Hai-Liang Sun Jiang Sun Jian-Feng Su Zhao-Feng Liu Wan-Dong

Pulse loss front in coaxial cylinder vacuum magnetically insulated transmission lines under different voltages

Zhou Jun, Zhang Peng-Fei, Yang Hai-Liang, Sun Jiang, Sun Jian-Feng, Su Zhao-Feng, Liu Wan-Dong
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  • Received Date:  25 April 2012
  • Accepted Date:  05 July 2012
  • Published Online:  20 December 2012

Pulse loss front in coaxial cylinder vacuum magnetically insulated transmission lines under different voltages

  • 1. Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China;
  • 2. Northwest Institute of Nuclear Technology, Xi'an 710024, China

Abstract: 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.

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