Readout Firmware of the Readout System for the MWDC at the ETF in HIRFL-CSR

Three multiwire drift chamber (MWDC) detectors and readout electrical equipment had been installed in 2018 as part of the cooler storage ring external target facility (ETF) project to gather track data in the ETF. In addition to its high efficiency and adaptability, the electronic device requires high precision in terms of position and energy resolution, as well as good flexibility and efficiency of the electronics. In this article, we propose an electronic readout technique for MWDC detectors and show the implementation of a 32-channel signal processing in a single Xilinx Kintex-7 field-programmable gate array. Furthermore, we also present a thorough description of the readout firmware, with a focus on the deserialization mechanism and data processing algorithms. In addition, we conducted a series of initial tests. The results show that the proposed technique can meet the application requirement.