GEANT4-based calibration of an organic liquid scintillator
(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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- author
- organization
- publishing date
- 2022-01-21
- 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}}, }