Large linac-based electron cooling device

The electron beam for electron cooling is traditionally obtained by direct electrostatic acceleration. But for the higher electron energies (above 5 MV), the difficulties in implementing sharply increase and set natural limits for such method in use. That is why it is interesting to consider alternative ways for obtaining a high energy electron beam applicable for the electron cooling. The usual source of bunched electron beam of such energy and intensity is a linear accelerator. The main problem for using the linear accelerator for our purposes is a way to meet high precision requirements to the energy and momentum spreads of beam.