Radiation Physics and Engineering
A peer-reviewed journal published by K. N. Toosi University of Technology

Experimental and Monte Carlo investigation of neutron detection by THGEM detector in SQS mode

Document Type : Research Article

Authors

Mohammad Hadi Najarzadeh 1
Mohammad Reza Rezaie 2
Ali Negarestani 2
Ahmad Akhound 1

1 Department of Physics, Payame Noor University (PNU), P.O. Box 19395-4697, Tehran, Iran

2 Department of Nuclear Engineering, Faculty of Science and Modern Technologies, Graduate University of Advanced Technology, Kerman, Iran

https://doi.org/10.22034/rpe.2023.361464.1103
Abstract
Neutron detection techniques are widely studied in many articles. Most of this research requires a lot of electronic equipment. In this study, using the Thick Gas electron multiplier (THGEM) detector, a new method for neutron detection is proposed to reduce electronic equipment. In the neutron detection system, the converter material is used for converting neutrons to protons that are directed to the THGEM detector. By filling the detector space with noble gas and applying special voltage, THGEM enters to Self-Quenched Streamer (SQS) mode for protons detection. All these steps are examined by simulation, then the detection system is made and is examined in the laboratory. Finally, the simulation results and laboratory results are compared.    The results show that the 1 mm Plexiglas layer is suitable for converting neutrons to protons. The suitable distance between the converter layer and the THGEM detector is 3 cm. Also, the SQS mode happens in the most number of THGEM holes when the THGEM voltage is 980 volt. Investigating an approach to neutron detection by placing THGEM in SQS mode can be useful because, firstly, placing the THGEM detector in SQS mode simplifies electrical circuits and secondly, with this proposed detection system; it is possible to design detectors with different dimensions for neutrons.

Highlights

  • Introducing a new method for neutron detection by Thgem detector in SQS mode.
  • The condition of Thgem for neutron detection was done by Monte Carlo and practical methods.
  • The 1 mm Plexiglas converter layer on Thgem detector can be converted neutrons to protons.
  • The suitable distance between the converter layer and the THGEM detector is 3 cm.
  • The SQS mode by protons in THGEM holes happens when voltage is 980 volt.

Keywords

Neutron
Detection
THGEM, SQS mode, MCNPX, Voltage, Convert Layer
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Radiation Physics and Engineering
Volume 4, Issue 3
Spring 2023
Pages 15-22

  • Receive Date 10 September 2022
  • Revise Date 22 January 2023
  • Accept Date 25 January 2023

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