Through random chance, I decided one day that I would build a proton accelerator. I understand the concepts of the physics that are involved well enough, but the actual construction is a bit of a mystery. There is a surprising number of rescources on the construction, but they mostly involve people with massive budgets, and even massiver amounts of free time. For example, I don't have the rescources to buy a few miles of copper wire, and then wrap it around my house. This problem is also escalated by the fact that I'm in 7th grade, and it's tough to accumalate enough money. I hope to spend less than $4oo american, if possible. One of my biggest challenges is to find a way to build (or buy) a cloud chamber, and enough reactant material. They don't exactly sell that stuff at target. I plan to keep a mini-blog here about the construction of it here, and I would really appreciate any helpful hints.