In this repository you can find optimized alternative BDS with L*=6m with shorter FFS length. The details on the optimization process can be found in: "Quadrupole-free detector optics design for the Compact Linear Collider final focus system at 3 TeV", Phys. Rev. Accel. Beams 21, 011002 (2018) or in Fabien Plassard's thesis. The FFS length factor (LSCA) is used to scale the FFS drifts, bends and quads, as first approximation.