PARALLEL-COUPLED ACCELERATING STRUCTURES

The well-known parallel-coupled cavity structures working on SW regime have some advantages in comparison with conventional TW-mode accelerating structures that usually used for high gradient linacs. In this article brief review of TW-mode accelerators defects is presented. Some accelerators based on a parallel- coupled cavity structure in which accelerating cavities fed parallel from a few rectangular waveguides are discussed. In addition the low energy accelerator for intensive electron beam based on parallel-coupled cavity structure and permanent magnets is presented.