A 3-stage cyclotron complex for driving the Energy Amplifier

The goal of this accelerator complex is to provide a 10 MW proton beam for driving the Energy Amplifier recently proposed by C. Rubbia. It is lower (by one order of magnitude) than the requirements of most of the accelerator-driven projects based on c-w linacs. Therefore, the requirements for the Energy Amplifier open an alternative solution based on ring cyclotrons producing a continuous beam. Thus taking into account the present development of high-intensity cyclotrons, a three-stage cyclotron accelerator is a possible solution. It comprises of: (1) the injector(s) which should be able to deliver a 10 mA beam in a given phase width-a solution based on two 5mA compact isochronous cyclotrons working in parallel is proposed; (2) the intermediate stage which is a four-separated-sector cyclotron accelerating the injected beam up to 120 MeV; and (3) the final booster which has ten separated sectors and six cavities raising the kinetic energy up to about 1000 MeV.