  The circuit arrangement of the proposed coaxial ring cyclotron (CRC) is
described, and its main advantages, such as simple injection technique, several
injected beams summation option, high efficiency, are considered. The proposed
proton accelerator is a perspective machine for the solution of the main
problems of the present day nuclear power engineering as well as for the
next-generation nuclear power plants, representing a combination of subcritical
reactors and particle accelerators. The possibility of installation of CRCs
into ring accelerators with an average diameter from 60 to $100m$, e.g., the
Yerevan electron synchrotron, is considered.
