Linac integrated scheme using rf energy storage and compression

Proposed earlier the conception of a compact rf-linac without an external rf-energy source is analysed here numerically. Under certain conditions an unbunched low voltage electron beam can be accelerated during a short ns pulse by using of rf-energy stored in an external cavity for a relatively long time of self-excited oscillation induced by the same beam in the same special accelerating/oscillating linac structure. Non-steady acceleration is considered in terms of optimal time delays, energy gain and spectra