Development of a new beam injection scheme for a small electron storage ring

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A small electron storage ring should be useful for many applications. One of the difficulty in designing such a small ring accelerator is the injection scheme. We have proposed a new scheme which utilizes the phase shift while propagating the accelerator cavity at a non-relativistic energy. To realize infinite turns of circulation of the newly injected beam, coincidence on the energy-timing phase space is necessary. We have realized that it never happens due to the conservation rule. A damping mec hanism is needed for such a scheme.