The Zero Gradient Synchrotron Closed Orbit Position Monitoring System

Four segment induction electrodes are being installed in each of the eight Zero Gradient Synchrotron (ZGS) straight sections. Due to the presence of other equipment, these electrodes can only be 10-in long in the direction of beam travel. The small length-to-width ratio of these electrodes creates special problems. Five pieces of information are transmitted from each electrode to give detailed data on the beam orbits. Four of these consist of varying dc signals representing the beam envelope on the segments. These signals are remotely processed to simultaneously give radial and vertical position of the beam. The fifth signal is an unfiltered bunch signal which is locally processed to give a fast radial, vertical, or sum signal at the bunch frequency.