X-Ray Source
Hello, weeyndha
You are not giving enough info about what you need, you get x rays with accelerating voltages from some 20 kV to 300 kV getting increasingly harder (more penetrating) radiation. You get more intense radiation sending more current trough the x ray tube, form some miliamps to several amps. Refrigeration of the anode is of course a big problem at high currents, But high voltage and irradiation risk management should not be taken lightly.
I think this link could be usefull
hxxp://www.noah.org/science/x-ray/stong/
hope it helps you.
Best regards