Abstract:
The Qt framework is a graphic user interface programming framework. The APV25 front card, APVDS readout board and Qt framework based data acquisition software were used to design a high-channel-count, high-performance, high-integration, cross-platform data acquisition system that can display real-time sampling waveforms. The system uses a maximum of 4 APVDSs, 16 APV25 front cards, and is connected to the computer via a switch via Gigabit Ethernet. Working under the condition of 1 024 channels and real-time displaying the sampling waveform, the transmission rate can reach 715 Mb/s. In this test, the system is able to work stably under the 31-point continuous sampling mode with a trigger rate of 1.70 kHz. Compared with the original system, the system can simplify the operation, significantly increase channel number and improve both efficiency and robustness of the measurement. The system can be expended into 2 048 channels in the future, which is suitable for the experiment of large area microstructure gas detectors.
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