Neutron time-of-flight spectroscopy measurement using a waveform digitizer

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Long-Xiang Liu, Hong-Wei Wang, Yu-Gang Ma, Xi-Guang Cao, Xiang-Zhou Cai, Jin-Gen Chen, Gui-Lin Zhang, Jian-Long Han, Guo-Qiang Zhang, Ji-Feng Hu and Xiao-He Wang. Neutron time-of-flight spectroscopy measurement using a waveform digitizer[J]. Chinese Physics C, 2016, 40(5): 056202. doi: 10.1088/1674-1137/40/5/056202
Long-Xiang Liu, Hong-Wei Wang, Yu-Gang Ma, Xi-Guang Cao, Xiang-Zhou Cai, Jin-Gen Chen, Gui-Lin Zhang, Jian-Long Han, Guo-Qiang Zhang, Ji-Feng Hu and Xiao-He Wang. Neutron time-of-flight spectroscopy measurement using a waveform digitizer[J]. Chinese Physics C, 2016, 40(5): 056202.  doi: 10.1088/1674-1137/40/5/056202 shu
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Received: 2015-09-17
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    Supported by Strategic Priority Research Program of the Chinese Academy of Science(TMSR)(XDA02010100), National Natural Science Foundation of China(NSFC)(11475245, No.11305239), Shanghai Key Laboratory of Particle Physics and Cosmology(11DZ2260700)

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Neutron time-of-flight spectroscopy measurement using a waveform digitizer

    Corresponding author: Long-Xiang Liu,
    Corresponding author: Hong-Wei Wang,
  • 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • 2. Key Laboratory of Nuclear Radiation and Nuclear Technology, Chinese Academy of Science, Shanghai 201800, China
  • 3.  Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
Fund Project:  Supported by Strategic Priority Research Program of the Chinese Academy of Science(TMSR)(XDA02010100), National Natural Science Foundation of China(NSFC)(11475245, No.11305239), Shanghai Key Laboratory of Particle Physics and Cosmology(11DZ2260700)

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 used for TOF calculation, with 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 γ-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 DAQ system developed is characterized by a very high efficiency with respect to millisecond neutron TOF spectroscopy.

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