China International Youth Conference on Electrical Engineeing (CIYCEE 2025)

The dose distribution advantages of proton therapy require precise beam control, which is critical for facilities such as the Huazhong University of Science and Technology Proton Therapy Facility (HUST-PTF) with its numerous magnetic elements. High-accuracy synchronous current monitoring of these power supplies is essential for beam stability and treatment precision. This study describes a multi-power-supply current acquisition system developed for the HUST-PTF beamline. The system employs NI PXIe hardware, specifically an NI PXIe-8861 controller and NI PXIe-4309 analog input modules, which were chosen for their high channel density and galvanic isolation. DC Current Transducers (DCCTs) convert currents into voltage signals. Developed in LabVIEW, the software facilitates configurable parameters, real-time synchronous data acquisition, voltage-to-current processing, multichannel waveform display, spectral analysis for noise evaluation, and robust TDMS-to-Excel data recording. This solution provides high-accuracy, real-time current monitoring, which is crucial for the stable and precise operation of the HUST-PTF, ultimately enhancing the efficacy and safety of proton therapy.

Proton therapy,NI myDAQ,LabVIEW,Current acquisition