Choice of the RF cavity for the SSC collider

Four types of RF cavities-multiple cell and single cell, superconducting (SC) and normal conducting (NC)-have been compared with respect to the specific needs of the SSC collider. The single cell cavity is preferable to the multi-cell one because its higher order modes (HOM) are easier to damp. The SC cavity has a number of advantages over the NC one. But its mechanical complexity and operational reliability may present a concern. The impact of different RF frequencies on the beam parameters have also been studied. In the range from 180 MHz to 480 MHz, the parameter variations are generally small