More specifically what the transformer will be used
for is charging a 36uF 950V capacitor.  This capacitor
is part of the capacitor inductor pulse forming
network that drives the flashlamp.

It turns out the pulse rate for this laser (SSY-1 from
Meredith Instruments, http://www.mi-lasers.com) can
only handle about a 1pps repetition rate, for some
reason I thought it could handle a higher one, but at
1pps I won't need as large of a transformer as I
originally thought.

Also, it seems like the only transformers I can find
that come close to what I want are around 625 volts,
or 700 some volts.  I want something that will be able
to charge the capacitor up to 900 volts, but not go
over the capacitor's voltage rating of I don't
continuously fire the laser.

If I can't find a transformer at this voltage, I may
decide to use a multiplier to double one with half the
voltage, but I don't want any x3/x4 or cascade type
multipliers.

And thanks to everyone for your replies up to this
point!

--Nick

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