Nominal trajectory of injected $e^-$ and extracted $e^+$ in the extraction channel of LSS6

In an earlier paper 1) it has been shown that injecting electrons and extracting positrons through the proton extraction channel is not only feasible, but it is also the most attractive of 3 alternative schemes. However, that paper concentrated on proving the feasibility of such a scheme -even for energies above the design energy -rather than on defining optimum trajectories for these letpon beams.