Optimization of Kicker Pulse Bump by Using a SR Monitor at the Photon Factory

We plan to operate the Photon Factory storage ring by top-up injection mode from 2006. To realize top-up operation mode, remaining coherent oscillation of the stored beam due to error in the injection pulse bump is one of most serious problem. And also a non-linear kick of sextupole magnet in injection pulse bump excites coherent oscillation of the stored beam. To reducing the error in the injection pulse bump, we regulate the kick angles of the four kicker magnets by using the SR monitor which has a high speed gated camera. The coherent oscillation which induced by a non-linear kick of sextupole magnet is observed by same monitor. Without the sextupole magnet in the injection bump, we reduced remaining coherent oscillation less than σ/4 of the beam size by optimizing the kicker magnets.