Oddly enough, it's for a science fair :) Anyway, I joined the Science Club at my high school earlier today and I learned that we'll be entering our a science fair, winners of which will go to regionals. I read Michio Kaku's (forgive any misspellings) book Hyperspace and it somewhat motivated me to build one...and the science fair will be my reason. Note: we're expected to bring in the results, processes, and pictures rather than the project itself. What source of particles should I use? Something radioactive would be fun...however, I have no desire to have an awkward conversation with the CIA with skeptical nods and "Mhms" between sentences. I'm not entirely sure what I should use. Granted, I haven't done much research I'm only looking to accelerate to whatever speeds I can reasonably reach. I don't want it to be very big (a football field is a little to much), but at the same time I want some reportable results. If it could fit into a workshop/garage (it's about 20ft from door to end, so a radius of 5ft should allow plenty of room for movement) I would be a very happy person, but I could do with smaller. I'm also concerned about power usage. I don't intend to do anything on the same scale that Kaku did. The size of his experiment shorted the power in his home and his was around the size of a football field. I expect to not come too close to that, but it is still a concern of mine. If anyone had any instructions on how to build a generator (a Van de Graff generator would suffice) I would be pleased...if anyone knew a price range on pre-built ones I would be elated, but I don't have a problem DIYing the whole thing. Another thing I'm concerned about are the magnets, but let's not get ahead of ourselves here. I'll need the above information first before I worry about anything else. Note: I may not be able to do this. I've already emailed the head of my region's science fair about my little project for specific rules pertaining to my experiment. I was unable to find anything on the website (most of which dealt with regulations about living experiments), and I'm waiting with bated breath for my restrictions. Thanks in advance.