APPLICATIONS OF RECONFIGURABLE LOGIC DEVICES FOR ACCELERATOR CONTROLS

Recently, algorithm reconfigurable devices such as field programmable gate arrays (FPGA) and digital signal processors (DSP) have been widely used in the commercial product as the system-on-chip (SoC) applications. Those devices make it possible to develop a high performance system for a short period of time, and moreover it is possible to make small quantity with reasonable cost. The structure of SoC devices with FPGA is fully flexible and can respond to change of the logic of a control system easily. The capability of modifying the logic enables us to easily implement future additions to the system. At present, we have developed new remote I/O system consisting of VME boards and remote I/O cards with FPGA chips. The VME boards and remote I/O cards are communicating via optical fiber links. The circuits with DSP chips for electron-beam position monitoring are under development for high precision beam orbit measurements of the SPring-8 storage ring. Those applications show a flexible and expandable nature of the reconfigurable logic devices. The SoC system will fit many types of digital signal processing, such as a very high-speed feedback or a timing system in the accelerator control system in the future. We will present some of examples as potential applications in this paper