Transport of bunches in a dielectric wakefield accelerator using an array of plasma cells

An array of short sections of plasma dielectric wakefield accelerator modules spaced by vacuum zones (without plasma) is proposed to avoid the 'underdense' operating regime. A calculation of the dynamics of the accelerated particles in such an array of accelerating-drift sections is given. The parameters of bunches which are available in SLAC are used for this calculation. A dielectric structure using fused silica provides an operating frequency approx 350 GHz. Lengths of plasma and vacuum sections providing stable transportation of the accelerated bunch are found. The bunch size in the focal plane is determined