Performance of the single-pass position monitor at SOR-RING

The R&D of single-pass beam position monitor is being carried out at SOR-RING, a 500-MeV electron storage ring. The bunch signals from four button electrodes are directly fed into a 4-channel digital oscilloscope through semi-rigid cables. The digitized data are sent to a workstation for the beam position calculation. The relative accuracy much less than 0.1 mm has been obtained with this system.