Triggering unit of about 30 kV
pulse lead to Marx bank generator.
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Initial voltage is about 15.5
kV, and at output it is about 30 kV. Two capacitors of 1 nF each was
charged in parallel, and when triggering pulse make spark at SG1, then
this two capacitors are connected in series producing double initial
voltage with very fast rise time.
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From Marx bank generator,
through coaxial cable, sharp pulse lead to dumper capacitor of 500 pF.
Blue dot represent place when occur corona preionization just before
main plasma discharge. When transferred voltage (or energy) from Marx
generator charge dumper capacitor, then self triggered spark gap SG2
begin charge peaker capacitor until voltage reach breakdown voltage
between laser electrodes.
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This is simplified diagram of
TEA laser setup. Initially, dumper capacitor was 500 pF, but later was
added another capacitor of same capacitance to increasing stored
energy. But I was not observe any differences. This is maybe because
Marx generator can't charge both capacitors to same voltage as only
one. This mean, that I need add more capacitance at Marx generator to
achieving more power.
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