Effects of Increasing Injection Repetition Rate of Low-Energy Injection into a Compact Storage Ring

Abstract

The relation between the injection repetition rate and beam accumulation in an electron storage ring were studied through experiments and beam tracking calculations. The rate is an important parameter which limits beam current storage. It was believed that the stored beam current could not be increased even if the injection repetition rate was increased over the inverse of the radiation damping time of the betatron oscillations. This is an important consideration for low-energy injection. The experiment was performed at 90 MeV using an NIJI-I compact electron storage ring, and a beam current accumulation rate was obtained above the limit determined by the radiation damping time. It was found that beam current accumulation depended on the kick angle of the kicker magnet.