Beam-based alignment and tuning procedures for e+e- collider final focus systems

For future linear colliders, with very small emittances and beam sizes and demanding tolerances on final focus system alignment and magnet errors, it becomes increasingly important to use the beam as a diagnostic tool. A report is presented on procedures that will be implemented in the Final Focus Test Beam at SLAC (Stanford Linear Accelerator Center) incorporating (i) quadrupole strength changes, (ii) central orbit modifications, (iii) spot size measurements, and (iv) beam stability monitoring.<>