Microprocessor control for the CEBAF RF control module

The CEBAF (Continuous Electron Accelerator Facility) RF system is controlled by an array of local control computers set in a network and supervised by a central RF system supervisory computer. Each local computer, geographically located near a cluster of 32 klystrons in one service building above the accelerator tunnel, controls the parameters of these klystrons. The RF control module constitutes the control link between the local computer and the individual klystron and RF chain. The microprocessor section of the RF control module is reviewed, and the way it reduces the load on the local RF computer by providing tight closed-loop control over the RF chain that it is assigned to is explained. The hardware and the software aspects of the subject are covered.<>