MTCA.4 RF signal processing system

An RF signal processing system has been developed for LLRF and BPM (beam position monitor) systems. This system is based on MTCA.4 (Micro Telecommunications Computing Architecture - Enhancements for Rear I/O and Precision Timing), consists of a new shelf and three types of cards. The shelf has a DESY's RF backplane. The front-mounting card is the digital process function AMC (Advanced Mezzanine Card). The developed rear-mounting cards are the μRTM (micro Rear Transition Module) and eRTM (extended RTM). The μRTM is for RF front-end function (down converters and up converters, in future). The eRTM generates clock signals (local oscillator signal, in future) and deliver them to μRTM through the RF backplane. This system reduces cable connections and achieves the LLRF and BPM in a small size. Status-monitor and hot-swap are also supported in all MTCA cards. This time, the BPM signal processing system has been developed. BPM signal process and software are on signal processing card equipped with Xilinx FPGA 'Zynq' and fast-sampling ADC. At SPring-8, KEK-PF and J-PARC LINAC site, the developed BPM signal process and software were checked of operation using actual BPM's signals and discussed in this paper. (author)