SYSTEM LEVEL IMPLEMENTATION OF BEAM POSITION MONITORS WITH LOCAL DATA PROCESSING CAPABILITY FOR THE CORNELL ELECTRON STORAGE RING∗

We describe the architecture and system-level imple-mentation of a bunch-by-bunch beam position monitoring system for the Cornell Electron Storage Ring (CESR). With this system an individual readout module is supplied for each detector. Each readout module is equipped with its own digital signal processor (DSP) which provides auto-matic gain and timing control for the acquisition of signals corresponding to particular bunches in the ring. The DSPs also provide local data processing for applications such as multi-turn averaged position information, betatron phase measurements, and bunch-by-bunch tune measurements