Ugh! It's very similar to a power supply I worked on in the
mid-1970's for a tacan pulse power calibration system. The
scars had almost healed. There's not much advantage in it
over a vintage blood and thunder supply beyond improved
regulation. No reduction in the amount of steel or output
capacitance needed... lots of stored energy.
Though I did learn a lot about PUT's and SCR's in the process
so overall it was fun. It's also when I learned that power
supply engineers always run Towards the explosion.
steve H
http://www.realhamradio.com/hvreg.pdf
for a schematic.