Damping Rings for Achieving Ultra-Small Electron Beam Emittance

摘要

Production of low emittance beams at injection is examined via a computer simulation program. Two machines were studied using the simulation program, both of which were assumed circular with no straight sections, with radii of 100 and 1000 meters. The program accounts for first order beam transport, damping from energy loss due to synchrotron radiation, excitation from the quantum nature of the radiation, beam excitation due to the presence of gas molecules in the beam pipe, magnet errors, beam growth due to intrabeam scattering, and the effect of wakefields induced in the rf cavity. The machines considered are found to be feasible and to have small emittances. Intrabeam scattering is found to be the dominant process affecting the beam emittance. (ERA citation 11:056870)