Lawrence Berkeley National Laboratory

The Next Generation Light Source will deliver high (MHz) repetition rate electron beams to an array of free electron lasers. Because of the significant average current in such a facility, effective beam collimation is extremely important to minimize radiation damage to undulators, prevent quenches of superconducting cavities, limit dose rates outside of the accelerator tunnel and prevent equipmentdamage. This paper describes the early conceptual design of a collimation system, as well as initial results of simulations to test its effectiveness.