P. RAIMONDI (SLAC)
The length, complexity and cost of the present Final Focus schemes for linear colliders grows very fast with the beam energy. The tigther tolerances and more delicate tuning required bring serious doubt on the possibility that they could ever reach their design performances. A new scheme for a final focus system, specifically designed and optimized for flat and high energy beams, is presented and compared with the one proposed for NLC. This new design is much simpler, shorter and cheaper, with better tolerances and tunability. It scales less about lineraly with energy allowing a much more flexible scheme apt to be used in a much larger energy range. Finally its better dynamic aperture could allow a much more modest and safer collimation scheme then the ones currently designed.
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linac2000@slac.stanford.edu