Hi PF, I've been looking to do a physics project for a while, and I thought about trying to build a particle accelerator at home. I know there's a lot of potential risks involved, and I imagine some legal issues, but is it plausible for a 15 year old to build a crude particle accelerator at home, with minimal risks? I know all the math and physics (calculus, differential equations, electromagnetism, special relativity, etc .) and how to actually build the accelerator. I'm wondering: 1. What are the potential risks and how can I avoid them? 2. Is it realistic for a 15 year old to even try? 3. How long would it take and how much would it cost? Thanks for all of your help PF.