I need a DC 4.2Kv 300ma power supply, and am looking for advice.
I'm currently using a the guts of a microwave oven (transformer/diode/capacitor) to power a magnetron for a physics experiment. The transformer outputs 2.1kv into a diode/capacitor voltage doubler to produces a 50% duty cycle 4.2KV potential at 60hz. The resulting signal from the magnetron is noisier than an LA freeway at rush hour.
According to this paper changing the unit to a regulated HV power supply, controlling the filament heater separately, and reducing the filament current after it reaches operating conditions should allow it to phase lock onto an external signal and operate as a low noise amplifier.
For the HV side, my first instinct was to buy a commercial supply. I priced them, and after regaining consciousness thought I should ask here.
Question: Is there a way to smooth out the power from my existing supply or another inexpensive alternative I should consider?
Thanks in advance.
(Amateur: yes. Kid/teenager: no. Experience in electronics: Kit-building. Follows safety procedures/common sense: yes...Safety advice is always appreciated.)
Added additional details on safety and end use to comments.