Engineering Design Method and Fabrication of the Fully Featured Accelerating Structure for the CLIC Study

The very high accelerating gradient of the Compact Linear Collider (CLIC) design requires radio frequency (RF) structures, which operate in a performance range well beyond that found in any existing accelerator. Specifically, power generating structures (PETS), waveguide components and accelerating structures (AS) are being developed,and they have towork with an unprecedented combination of frequency (12 GHz), peak power (100 MW), pulse length (about 300 ns) and accelerating gradient (100 MV/m). Each accelerating structure contains about 30 copper disks, which form the accelerating cavity The requirements of different technical systems, such as vacuum, cooling and alignment, have to be considered during the engineering design of a fully featured AS. This paper describes the engineering design method and fabrication of the fully featured AS for the CLIC study at CERN.