What places, or where Can i get a AC transformer that will Increase voltage too 150KV + from household power
I'd recommend three things:


Buy the book, "Exploring Quantum Physics through Hands-on Projects," by David Prutchi and his daughter Shanni Prutchi.
You contact the authors of said book immediately and ask for their thoughts about your ideas, thoughts, and wishes -- which to start I assume is a cyclotron with two dees.
Go to their web site, perhaps starting here: DIY 250 kV Power Supply. Read carefully through their book and their web site.


A cyclotron is pretty easy by today's standards and there's no reason you can't do it. But I don't think this is the place for a discussion about making one. Not unless you've shown an aptitude for it and are asking specific questions along the way.



Just be careful. You casually mentioned Pb (lead), saying you'd sometimes be using 45 cm thickness of it. While at 220 keV, lead is 12 times better stopping power than steel, at 2 MeV it's only 2.5 times better than steel. So don't get too cavalier and imagine that lead is some kind of panacea. It's still mostly vacuum space and you can easily generate gamma radiation that is very much smaller than an atomic diameter. The cross-section  (measured in barns) of atoms varies depending the atom and energy of the gamma. You need to be fully aware of these details, and more.

A quick check can be made by looking up "radiographic equivalence factors," often shown in tables that include keV/MeV and materials.

You asked about what a cyclotron is used for. That made me pause a moment. But you can look up a cyclotron on Wiki. But they are used to make short-lived radioisotopes, some cancer treatments, and used to be used for particle physics experiments. Dirt easy to make, these days. Must be plans on the web. (There are also betatrons, linear accelerators, and well.. whatever you can think up, actually.)

Bottom line is that you need to understand ideas of atomic cross section, fully understand different kinds of radiation and how they are generated, and I'd recommend that you have appropriate instrumentation available to monitor what is going on. Not just a Geiger counter. (Which you should have several varieties of.) But also a scintillator capable of differentiating energies -- commonly using NaI(Tl) crystal and a photomultiplier. I designed and built a Geiger counter when I was 16 (and it worked, first time, on a sample of Autunite I had then [still do have that crystal].) So they are very, very easy to understand and design and use. A scintillator is a little more complex. But not that much more so. You should be relatively competent with at least those tools. (There are many more, but probably too expensive unless you are borrowing tools from a lab.)



You might also consider joining the Yahoo group called "Geiger Enthusiasts" which is a very active group and a very knowledgeable one. I'd definitely recommend conversing with some of those folks, as well.

Get advice, read, study, learn, test, validate, and enjoy. But don't do this alone. I contacted the designer (a physicist) of a Geiger tube I used (originally just to find out where I could buy his tube) and gained some advice, even as a mere teenager. I also spent days, and weeks, in the science library of the largest university in my State.

So mitigate your risks by getting good information and advice. And if possible, contact your local university and see if someone there may be willing to help (unless you are already involved in one right now -- in which case, why in the heck are you asking these questions here?)