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Related Experiment Video

Updated: May 7, 2025

Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2
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Enhanced high-sensitivity multi-layer neutron detector based on LiF:ZnS(Ag) scintillator.

Ilan Cohen Zada1,2, Alon Osovizky2,3, Itzhak Orion4

  • 1Nuclear Engineering Unit, Ben-Gurion University of the Negev, Beer-Sheva, Israel.

Scientific Reports
|December 29, 2024
PubMed
Summary

This study introduces a novel multi-layer neutron detector using LiF:ZnS(Ag) scintillators and Silicon Photomultiplier (SiPM) sensors. The design significantly enhances neutron detection efficiency and gamma rejection compared to traditional methods.

Keywords:
LiF:ZnS(Ag)Neutron detectionSilicon photomultiplier

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Area of Science:

  • Nuclear instrumentation and detector physics.
  • Materials science for radiation detection.

Background:

  • Traditional neutron detectors face limitations in sensitivity and cost-effectiveness.
  • Opacity of LiF:ZnS(Ag) scintillators restricts detection efficiency in single-layer designs.

Purpose of the Study:

  • To develop a novel, highly sensitive, and cost-effective neutron detector.
  • To overcome the limitations of scintillator opacity in neutron detection.

Main Methods:

  • Utilizing a multi-layered configuration with thin LiF:ZnS(Ag) scintillators and Silicon Photomultiplier (SiPM) sensors.
  • Optimizing individual layers for sensitivity and gamma rejection.
  • Employing a transparent neutron moderator as a light guide.

Main Results:

  • Achieved a 329% improvement in neutron detection sensitivity compared to a single layer.
  • Demonstrated significant enhancement in differentiating neutron and gamma signals.
  • Enabled operational insights, including neutron source direction prediction.

Conclusions:

  • The multi-layer design offers a scalable and customizable alternative to existing neutron detectors.
  • This novel detector design outperforms traditional 3He tube-based configurations.
  • The proposed detector is a cost-effective and advantageous replacement option for various applications.