Parasitic Modes Removal out of Operating Mode Neighbourhood in the DAW I Accelerating Structure
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The disk and washer (DAW) accelerating structure /1/ finds its use in a number of new projects (PIGMI, SNQ etc). It composes the main part of the accelerating structure of the meson factory now under construction in the Institute for Nuclear Research (INR), Moscow. It is known /2,3,4/ that the parasitic modes with azimutnal (¿) field variations exist at the operating mode region. In this report different methods of the parasitic modes frequency shift are considered. The main attention is given to the resonant methods, Which are the most efficient.