What kind of subatomic particle streams are scientists able to generate and how do they do it? I know that LHC is banging together proton-protons streams and protons are large bulky particles and interested in finer grained particles. I am like asking if they can emit quark, gluon, boson, type particles and if so how what is required to create these type of subatomic particle emitters? So far, accelerators pumps hugh amounts of energy and they get all kinds of stuff out. I wanted to generate a pure coherent one type of subatomic particle and at much much lower energies. Electrons emitters have limited application.