Hello everyone, I'm very interested in building a cyclotron as a learning experience over the next year or so and have been doing some reading on what's required. I figure it would be helpful to ask everyone's opinion on materials such as electromagnets, beam detectors, vacuum cambers, etc. I'm not looking to have a super heavy duty cyclotron but I figure 1-2 MeV is manageable. I'm looking to run some basic particle collisions and some other fun stuff. Any feedback/advise is greatly appreciated! Also, what is a good science surplus site for purchasing some equipment?