Vibration measurement of the SPring-8 storage ring

The importance of vibration problems increases with the smaller emittance of a storage ring for synchrotron radiation source. The vertical emittance of the SPring-8 storage ring is so small that the effect of vibration on an electron beam cannot be neglected. We thus studied the vibration of the SPring-8 storage ring. Measurements of beam oscillation and magnet vibration were done and the relation between them was investigated. The vibration source and propagation paths were also studied and the suppression method is discussed