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GEANT4-based calibration of an organic liquid scintillator

Mauritzson, Nicholai LU ; Fissum, KG LU orcid ; Perrey, Hanno LU ; Annand, John LU ; Frost, Robert LU ; Hall-Wilton, Richard LU ; Jebali, R ; Kanaki, Kalliopi LU ; Maulerova-Subert, Vendula and Messi, Francesco LU orcid , et al. (2022) In Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment 1023.
Abstract
A light-yield calibration of an NE 213A organic liquid scintillator detector has been performed using bothmonoenergetic and polyenergetic gamma-ray sources. Scintillation light was detected in a photomultipliertube, and the corresponding pulses were subjected to waveform digitization on an event-by-event basis. Theresulting Compton edges have been analyzed using a GEANT4 simulation of the detector which models boththe interactions of the ionizing radiation as well as the transport of scintillation photons. The simulation is calibrated and also compared to well-established prescriptions used to determine the Compton edges,resulting ultimately in light-yield calibration functions. In the process, the simulation-based method produced... (More)
A light-yield calibration of an NE 213A organic liquid scintillator detector has been performed using bothmonoenergetic and polyenergetic gamma-ray sources. Scintillation light was detected in a photomultipliertube, and the corresponding pulses were subjected to waveform digitization on an event-by-event basis. Theresulting Compton edges have been analyzed using a GEANT4 simulation of the detector which models boththe interactions of the ionizing radiation as well as the transport of scintillation photons. The simulation is calibrated and also compared to well-established prescriptions used to determine the Compton edges,resulting ultimately in light-yield calibration functions. In the process, the simulation-based method produced information on the gain and intrinsic pulse-height resolution of the detector. It also facilitated a previously inaccessible understanding of the systematic uncertainties associated with the calibration of the scintillation-light yield. The simulation-based method was also compared to well-established numerical prescriptions for locating the Compton edges. Ultimately, the simulation predicted as much as 17% lower light-yield calibrations than the prescriptions. These calibrations indicate that approximately 35% of the scintillation light associated with a given gamma-ray reaches the photocathode. It is remarkable how well two 50 year old prescriptions for calibrating scintillation-light yield in organic scintillators have stood the test of time. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
cintillation light-yield calibration, Organic liquid scintillator, NE 213A, Gamma-rays, Compton edge, GEANT4
in
Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
volume
1023
article number
165962
pages
8 pages
publisher
Elsevier
external identifiers
  • scopus:85120174906
ISSN
0168-9002
DOI
10.1016/j.nima.2021.165962
language
English
LU publication?
yes
id
ce77afc5-0a47-4354-a7c2-942162c8c8d9
date added to LUP
2021-12-15 10:37:09
date last changed
2023-02-19 06:57:44
@article{ce77afc5-0a47-4354-a7c2-942162c8c8d9,
  abstract     = {{A light-yield calibration of an NE 213A organic liquid scintillator detector has been performed using bothmonoenergetic and polyenergetic gamma-ray sources. Scintillation light was detected in a photomultipliertube, and the corresponding pulses were subjected to waveform digitization on an event-by-event basis. Theresulting Compton edges have been analyzed using a GEANT4 simulation of the detector which models boththe interactions of the ionizing radiation as well as the transport of scintillation photons. The simulation is calibrated and also compared to well-established prescriptions used to determine the Compton edges,resulting ultimately in light-yield calibration functions. In the process, the simulation-based method produced information on the gain and intrinsic pulse-height resolution of the detector. It also facilitated a previously inaccessible understanding of the systematic uncertainties associated with the calibration of the scintillation-light yield. The simulation-based method was also compared to well-established numerical prescriptions for locating the Compton edges. Ultimately, the simulation predicted as much as 17% lower light-yield calibrations than the prescriptions. These calibrations indicate that approximately 35% of the scintillation light associated with a given gamma-ray reaches the photocathode. It is remarkable how well two 50 year old prescriptions for calibrating scintillation-light yield in organic scintillators have stood the test of time.}},
  author       = {{Mauritzson, Nicholai and Fissum, KG and Perrey, Hanno and Annand, John and Frost, Robert and Hall-Wilton, Richard and Jebali, R and Kanaki, Kalliopi and Maulerova-Subert, Vendula and Messi, Francesco and Rofors, Emil}},
  issn         = {{0168-9002}},
  keywords     = {{cintillation light-yield calibration; Organic liquid scintillator; NE 213A; Gamma-rays; Compton edge; GEANT4}},
  language     = {{eng}},
  month        = {{01}},
  publisher    = {{Elsevier}},
  series       = {{Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment}},
  title        = {{GEANT4-based calibration of an organic liquid scintillator}},
  url          = {{http://dx.doi.org/10.1016/j.nima.2021.165962}},
  doi          = {{10.1016/j.nima.2021.165962}},
  volume       = {{1023}},
  year         = {{2022}},
}