The Drive Beam Accelerator of CLIC

The drive beam of the Compact Linear Collider (CLIC) requires a current of several amperes. The time structure of this beam is discussed. First simulation results on longitudinal single bunch effects are presented and achievable bunch lengths and sensitivity to jitter of the gradient, initial energy and charge are analysed. The transverse stability of the beam is discussed based on the present structure model. Requirements on the damping and detuning of the cavities are given in detail. A beam-based alignment technique is presented and the stability with respect to jitter and ground motion is investigated.