Storage Ring Filling via Direct Production of Electron and Positrons by High Energy Protons
In the context of the proposals to build an electron proton colliding facility at Fermilab, the authors present a new scheme for the electron ring injector, based on the production of high energy electrons or positrons by a suitably prepared 100 GeV high intensity proton beam. With this scheme one can achieve electron ring filling times of a few minutes, while avoiding the instabilities associated with low energy injection.