A Fast RF Structure Monitor

A number of high energy physics experiments are based on a random distribution of particles entering the experimental appa. ratus. Unfortunately, the extra. cted beam from a proton synchrotron will display a bunching due to the RF cavity. However, this bunching can be reduced or destroyed by various techniques; such as, by introducing noise into the RF cavity during extraction, or by lengthening the energy loss target. Therefore, in order to measure the effectiveness of these various techniques, a monitoring system is needed to detect the amount of RF structure present in the extracted beam. The design of the RF structure monitor used at the Zero Gradient Synchrotron (ZGS) will now be described. Further, the results obtained from using this system will be discussed.