ABSTRACT
Disk loaded waveguides (DLWs) are widely used in different linacs. At the present time, they are treated as accelerating structures for linear colliders. The purpose of a DLW design is to determine the DLW geometrical dimensions which provide for the required characteristics of the accelerated beam. Solving this problem, the designer calculates the particle dynamics in the electromagnetic field whose amplitude and phase velocity along the waveguide are functions of the DLW geometry. An important problem in the development of an accelerating structure of an electron–positron linear collider is the design of a matched coupler. It is known that an increase of a intercell coupling of a biperiodic structure decreases its shunt impedance since it changes the surface current distribution in both coupling and accelerating cells. In the accelerating mode, the strong magnetic field of the tuned structure provides inter-cell coupling. The coupling cell dimensions are small.
