Beam Optics Studies on the Antiproton Accumulator

The CERN Antiproton Accumulator (AA) was designed to accumulate 6 x 1011 antiprotons per day, using the stochastic cooling technique. Its construction was completed within two years and the first beam circulated in early July 1980. This paper describes the conceptual design of the lattice and how multipole shim corrections were applied to develop the large betatron and momentum design acceptances. We also report how a sequence of such corrections, based on optics studies with proton beams, have been applied to the point that the machine is now approaching design performance.