You’re absolutely right about the industrial add-ons gobbling up the budget, Rematog. Still, I’d halfway like to put one in my garage and power about a 1 mile radius. (Low population density around here).

I know that roughly 1 meter of water will shield against nuetrons- can it turn x-rays into useful heat and bring that part of the energy output conversion back where DIYers just might be able to build one ?[chuckle].

I finished the theory notes about an hour ago, btw. Got some more chores before I can check the claims and math in any detail, but now I do understand at least the current and magnetic aspects.

The whole theory section of the patent kept bringing Pentode (Ok-Octode or Dectode) vacuum tubes to mind.