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In this paper, we design a PXI-based, multi-channel data-acquisition system(DAS) mainly applicable to recording one-shot fast transient pulses in nuclearphysics experiments. The system consists of one NI PXIe-1085 chassis,containing a controller card and at most 16 data-acquisition (DAQ) cards. Everysingle DAQ card has a sampling rate of 1GS/s and a 12bit vertical resolutionwith the PXI interface and SFP+ transceiver for data transmission. When thesystem is put into operation near the pulsed radiation source, the SFP+ opticalfiber channel enables a timely data transmission to a remote server. All ofthese cards in the chassis can be synchronized using PXI timing and triggeringresources. Additionally, a simple DAS software is developed to display thepulsed signals captured and communicate with the host PC for remote control anddata upload. After careful calibration, preliminary tests show that every DAQchannel achieves an analog bandwidth higher than 200MHz and an ENOB of morethan 9 bits at a 1GS/s sampling rate. Owing to such high speed and resolution,the system may facilitate improvements in extracting maximum information fromtransient signals. Furthermore, with great scalability and high-speed datatransmission, the system can be used for other nuclear physics experiments.

A PXI-based Multi-channel Data Acquisition System for Fast Transient Pulses