The status of high-speed trigger multiplexer module with aurora protocol implemented on Arria II FPGA for the Belle II Cylindrical Drift Chamber detector

Based on the first prototype, a newly modified trigger multiplexer module (merger) is under development for the Central Drift Chamber (CDC) detector which will be used in the future Belle II experiment. The features of modified merger circuit board include two Arria II FPGAs, four 3.125G optical modules and one 6.25G optical module for data transmission. The modified circuit board of merger was made and the data-link testing with Aurora protocol between the merger and the main trigger system (UT3) has been performed. Simple data reduction scheme within mergers and the schedule of the production plan will also be included here.