Data acquisition system of superconducting cavity test based on Labview

The data acquisition system based on Labview is designed. The system is applied to the vertical and horizontal test experiment. It is in charge of communications of the measuring instruments, the local machine and the remote machine. It realizes the real-time display of Q₀∼E_acc and radiation dose curve for the first time in China. The data connection between Labview and EPICS is also implemented. The DAQ system chooses different transmission interfaces according to the different bandwidths and precisions of the measured data. It collects data of instruments such as power meter, frequency counter, thermometer and radiation dosimeter. All of these data should be acquired, transmitted, processed and stored synchronously and in real time. The result for Spoke012 cavity vertical test has shown that the DAQ system in operation performs stably and reliably as expected. It also has a friendly interface and can be transplanted to other superconducting cavity tests easily and conveniently. (authors)