Development of a multi-channel readout electronics verification system for MWDC detectors

Background The Multi-Wire Drift Chamber (MWDC) is among the significant detectors for CSR External Target Experiment (CEE). We require the MWDC detector’s front-end readout circuits to have a high integration, high count rate, and big dynamic range in order to measure the tracks of fore-angle products.
Purpose In this paper, MWDC readout electronics verification system is shown, which is based on the front-end amplifier chip and Switched Capacitor Array (SCA) chip independently established by the project team.
Results In the dynamic input range of 14 fC–950 fC, the readout electronics' energy measurement linearity is greater than 1%. The test results with MWDC illustrate that with a ⁵⁵Fe source an energy resolution of 22.4% was acquired, and with cosmic rays the residual error is less than 400um.