Intrabeam scattering analysis of ATF beam measurements

In future e/sup +/e/sup -/ linear colliders, such as the JLC/NLC, damping rings are needed to generate beams of intense bunches with very low emittances. The Accelerator Test Facility (ATF) at KEK is a prototype for such damping rings. In April 2000 the single bunch energy spread, bunch length, and horizontal and vertical emittances of the beam in the ATF were all measured as functions of current, and all exhibited significant growth. We want to know if the results agree with intrabeam scattering (IBS) theory.