DOI QR코드

DOI QR Code

Neutron/gamma scintillation detector for status monitoring of accelerator-driven neutron source IREN

  • S. Nuruyev (Joint Institute for Nuclear Researches) ;
  • D. Berikov (Joint Institute for Nuclear Researches) ;
  • R. Akbarov (Joint Institute for Nuclear Researches) ;
  • G. Ahmadov (Joint Institute for Nuclear Researches) ;
  • F. Ahmadov (Institute of Radiation Problems Under Ministry of Science and Education) ;
  • A. Sadigov (Institute of Radiation Problems Under Ministry of Science and Education) ;
  • M. Holik (Faculty of Electrical Engineering, UWB in Pilsen) ;
  • J. Naghiyev (Innovation and Digital Development Agency Nuclear Research Department) ;
  • A. Madadzada (Joint Institute for Nuclear Researches) ;
  • K. Udovichenko (Joint Institute for Nuclear Researches)
  • 투고 : 2023.05.04
  • 심사 : 2023.12.08
  • 발행 : 2024.05.25

초록

This paper presents a neutron/gamma detector based on a micropixel avalanche photodiode and a plastic scintillator that monitors the status of the accelerator-driven intense resonance neutron source (IREN) facility by measuring the neutron/gamma intensity in the target hall. The electronics of the neutron/gamma detector has been designed and developed. The size of the plastic scintillator was selected to be 3.7 × 3.7 × 30 mm3 due to the sensitive area of the MAPD. The experimental results demonstrated a dependence between the count rate of the detector and the frequency of the accelerator. The detector is sensitive to intermediate and fast neutrons. The minimum detectable energy was determined to be 200 keV using Cs-137 point gamma source. The maximum counting rate of the detector from TTL out is about 2.2⋅106 counts/sec, but for analogue output it is about 2⋅107 counts/sec. The detector can not allow discriminating neutrons and gamma rays by charge integration method.

키워드

과제정보

This work has partly received funding from the European Union's Horizon 2021 Research and Innovation Programme under the Marie Sklodowska-Curie's INNMEDSCAN project (grant agreement ID 101086178). We would like to thank Zecotek Photonics Inc. for providing MAPD samples.

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