Speaker
Description
The development of a compact slow positron source at SLAC relies upon the optimization of every component of the linac based source. Current plans involve testing novel systems by using an electron beam incident upon a tungsten target which can then be followed by a tungsten moderator to convert the fast positrons into a low emittance, high brightness positron beam. Moderators are known to have efficiencies highly dependent on the energy of the incident fast positrons, so the overall increase in fast positron count provided by higher electron energies is mitigated by the increase in mean fast positron energy. Here, we discuss optimizing both optimizing target geometry and a decelerating linac to tailor the fast positron spectrum and increase slow positron capture.
