Materials (Jul 2022)

A Novel NDT Scanning System Based on Line Array Fast Neutron Detector and D-T Neutron Source

  • Sheng Wang,
  • Chao Cao,
  • Wei Yin,
  • Yang Wu,
  • Heyong Huo,
  • Yong Sun,
  • Bin Liu,
  • Xin Yang,
  • Rundong Li,
  • Shilei Zhu,
  • Chunlei Wu,
  • Hang Li,
  • Bin Tang

DOI
https://doi.org/10.3390/ma15144946
Journal volume & issue
Vol. 15, no. 14
p. 4946

Abstract

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A novel non-destructive testing scanning system based on a large-size line array fast neutron detector and compact D-T neutron source has been constructed. The scanning range is up to 1000 mm, and the resolution is better than 1 mm. The fast neutron detection subsystem consists of a polypropylene zinc sulfide scintillator embedded with wavelength-shifting fibers, coupled with a light lens and a scientific CCD camera. With a new rotating tritium target, the lifetime of the compact D-T neutron source could achieve ten hours. The experimental results indicate that the scanning method based on line array fast neutron detector and D-T neutron source is feasible and enables the detection of slits on the order of 0.5 mm in width. Fast neutron tomography has been realized by this detection system too.

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