Linnik A. The wake-field excitation in dielectric structures by sequence of relativistic electrons bunches

The experimental research of wakefield excitation in dielectric structures of circular and rectangular cross-section by a sequence of relativistic electron bunches is presented in the thesis. It is experimentally shown that the regular sequence of relativistic electron bunches with a moderate charge coherently excites wakefield of the same amplitude, as for a single bunch with a big equivalent net charge. It is established that in the structure of rectangular cross-section due to higher equidistance of transverse modes, than for the round cross-section, the amplitude of excited wakefield is considerably higher compared with princi-pal mode amplitude. It is demonstrated that wakefield amplitude essentially increases at using of dielec-tric resonator. The method of injection of separate bunches of the same sequence into accelerating phase of wake field.