Tracking Studies on the Effects of Random Multipoles in the 6.5 T Lattice of the SSC Reference Designs Study

The acceptance of lattice A (6.5 T) of the SSC Reference Designs Study is determined for ten different sets of random errors as various multipole orders are set to zero. On the basis of 400 turn studies it is concluded that all multipole orders in the dipoles are important. Further studies show that the beam crossing dipoles limit the acceptance--when their multipoles are scaled as r-(n+ l), corresponding to an increased coil radius, the acceptance of the lattice essentially doubles.