TOF spectroscopy measurement using waveform digitizer
Longxiang Liu, Hongwei Wang, Yugang Ma, Xiguang Cao, Xiangzhou Cai,, Jingen Chen, Guilin Zhang, Jianlong Han, Guogiang Zhang, Jifeng Hu, Xiaohe, Wang
TL;DR
This paper presents a new waveform digitizer-based data acquisition system for neutron time-of-flight spectroscopy, demonstrating high efficiency in neutron detection and discrimination in a pulsed neutron facility for nuclear data measurement.
Contribution
The paper introduces a novel WFD-based DAQ system for TOF spectroscopy, enhancing neutron detection efficiency and pulse discrimination capabilities.
Findings
Successful implementation of WFD-based DAQ system
Effective neutron and gamma-ray discrimination using PSD
High efficiency in neutron TOF measurements
Abstract
The photoneutron source (PNS, phase 1), an electron linear accelerator (linac)-based pulsed neutron facility that uses the time-of-flight (TOF) technique, was constructed for the acquisition of nuclear data from the thorium molten salt reactor(TMSR) at the Shanghai Institute of Applied Physics (SINAP). The neutron detector signal, with the information on the pulse arrival time, pulse shape, and pulse height, was recorded by using a waveform digitizer (WFD). By using the pulse height and pulse-shape discrimination (PSD) analysis to identify neutrons and -rays, the neutron TOF spectrum was obtained by employing a simple electronic design, and a new WFD-based DAQ system was developed and tested in this commissioning experiment. The developed DAQ system is characterized by a very high efficiency with respect to millisecond neutron TOF spectroscopy
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