Dispersion properties of accelerating structure with conducting washes and diaphragms

Dispersion properties of accelerating structure with conducting washers and diaphragms are studied on the basis of the electrodynamical approach. This accelerating structure is used in the basic part of the meson factory linac. The dispersion characteristics is presented as the dependence of oscillation frequency on phase retardation per structure period. Waves propagating without attenuation and losses in structure are studied. Calculations are carried out using the MVLTI-MODE program. The bandwidth boundaries are caculated within the (3-4)f0/f0 is the frequency of operating oscillation) range. Behaviour of characteristics is considered for different structure variants of proton (0.4<=β<=0.9) and electron (β=1) accelerators. A conclusion is drawn that violations of axial structure symmetry results in dispersion curves distortion. But for lower characteristics representing the greatest practical interest one may neglect these distortions