A recipe for linear collider final focus system design

The design of final focus systems for linear colliders is challenging because of the large demagnifications needed to produce nanometer-sized beams at the interaction point. Simple first- and second-order matrix matching have proven insufficient for this task, and minimization of third- and higher-order aberrations is essential. An appropriate strategy is required for the latter to be successful. A recipe for final focus design, and a set of computational tools used to implement this approach, are described herein. An example of the use of this procedure is given.