Simulation of round beams

The results of a beam-beam simulation program employing round beams, being used in the design of a high-luminosity B-factory, are reported. Features of the program include the incorporation of synchrotron oscillations and disruption and an improved treatment of radiation damping and quantum fluctuations. The authors present and discuss some of the results of the simulation, including tune-shift limits and the onset of coherent motion. The results indicate that there is good reason to consider the use of round beams for high-luminosity storage rings. At present there are plans at Cornell to run tests with round beams at a beta * of around 20 cms.<>