A ROOT-based detector test system

Most detectors for nuclear physics experiments are detector arrays composed of numerous units. Testing each detector unit is a major part of the research work on detector arrays. To save time and simplify the research process, a ROOT-based detector test system was designed for detector unit testing. The test system is a general purpose and expandable software system that can support most of the hardware devices in the market. Users can easily build a complete detector test system using the required hardware devices. The software is based on the ROOT framework and is operated on the Linux platform. The software of the test system consists of four parts: the controller, data acquisition(DAQ), high-voltage power supply, and online monitoring and analysis. In addition, a user-friendly graphical user interface (GUI) was designed for user convenience. Moreover, the online analysis function of the software can implement automatic peak searching and spectrum fitting for different radioactive sources, and the results under different conditions can be shown automatically. The completion of the test system could greatly simplify the development process of the detector.