Upgrade of Front-End Electronics for CSR External Target Track Detector

The multi wire drift chamber (MWDC) is used for track measurement of the external target experimental terminal at heavy ion research facility in Lanzhou-Cooler storage ring. The amplification chip in the front-end electronics (FEE) adopts SFE16 chip. At present, the number of single board channels in the front-end electronics is few; In addition, the slow control configuration module is obsolete and cannot be compatible with new devices, resulting in low configuration efficiency. Therefore, the FEE is upgraded in this paper, and the single board realizes 32 channels; and a configuration board based on field programmable gate array (FPGA) is designed to realize fast and efficient configuration of multiple SFE16 chips through USB interface of host computer. The electronics test results show that the upgraded FEE guarantees the original performance on the basis of increasing the number of channels, and realizes the configuration of 248 SFE16 chips at a time. It is simple to use, efficient to configure, and practical.