Colliding-beam-accelerator lattice

The lattice of the colliding beam accelerator, a 400 x 400 GeV pp facility proposed for construction at Brookhaven National Laboratory is described. The structure adopted is very versatile, in part in consequence of its desirable behavior as function of momentum deviation and as function of the betatron tunes. Each of the six insertions can be arranged to meet specific requirements at the crossing points as illustrated by a discussion of the tuneable low-beta insertions. The luminosity in these low-beta insertions (2 x 10 to the 33rd power/sq cm/sec would be an order of magnitude larger than the standard insertions.