  This article assesses the use of a new type of electron accelerator, the
Multirhodotron, for four new purposes that cannot be implemented using
Rhodotrons and linacs. This study awards some arguments about possible
replacement of nuclear reactors by electron accelerators in process of
producing of medical isotopes on a global scale, about new possible electron
accelerator for high energy, also describes new possibilities of actuation of
free-electron lasers (FEL) at the megawatt level in the continuous wave (CW)
mode, and suggests some decision of the use of Multirhodotron for technology of
electron cooling in proton accelerators and colliders. Key words:
Multirhodotron; Rhodotron; electron accelerator; powerful FEL; medical
isotopes, electron cooling.

Accelerator Physics