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Potentialities of electron and ion beam accelerators for long-lived nuclear waste transmutation

Transmutation of nuclear materials can be carried out by thermal neutron capture reactions, by spallation type reactions or via photonuclear reactions caused by high-energy /spl gamma/-rays generated in the electron linacs. These reactions can complete each other. At the present work two different schemes of proton-electron accelerators utilizing successive or simultaneous acceleration of protons and electrons are proposed. In a case of simultaneous acceleration both the efficiency of acceleration increases and the power loss for the beam focusing decreases. The experimental results on the acceleration and focusing of the mixed electron-proton beams are also presented.