CERNs Chain of Accelerators LEP/LHC SPS ISOLDE Linacs Proton ion_.t PS <A= LIL evelina BOOSTER (antiproton AD (In preparation) p(proton) lon e(posit e(electron) Nr proton/antiproton conversion LIL: Linear Injector for LEP SPS: Super Proton Synchrotron EPA: Electron-Positron Accumulator LEP Large Electron-Positron Collider PS Proton Synchrotron LHC: Large Hadron Collider