First Trials with a 45 GW Cable Based Pulsed-Power Generator
A. Lindblom a, M. Elfsbergb, T. Hurtigb, A. Larssonb,c and S.E. Nyholmb

a ZpinchTech Engineering, SE-167 71 Solna, Sweden
b Swedish Defence Research Agency (FOI), SE-147 25 Tumba, Sweden
c Division of Electricity, Uppsala University, SE-751 21 Uppsala, Sweden
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The output from narrow band high power microwave (HPM) sources, such as the virtual cathode oscillator (vircator) and the magnetically insulated line oscillator (MILO), is strongly dependent on the voltage pulse feed. A rectangular, flat top voltage pulse can be achieved by the use of a transmission line as a pulse forming unit. The development in high voltage cable technology has made them useful as parts of high voltage and high power generator systems. The generator is designed to deliver a 200 ns voltage pulse of 500 kV into a 10 Ω unmatched load with an electric power of 25 GW. The generator has an impedance of 2 Ω. The primary energy storage of the generator consists of a 50 kV, 20 kJ capacitor bank. The 50 kV is discharged into a transformer that charges a pulse forming line to 550 kV. When charged, the pulse forming line is discharged into the load via a spark gap. This paper presents results from initial testing of the generator.
DOI: 10.12693/APhysPolA.115.976
PACS numbers: 84.30.Jc, 84.70.+p