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Anti-Compton shield for Compex germanium detector modules

Hrabar, Yuliia LU orcid ; Sarmiento Pico, Luis LU ; Golubev, Pavel LU ; Bobovnikov, O. ; Cox, Daniel LU and Rudolph, Dirk LU orcid (2023) In Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment 1056.
Abstract
A bismuth-germanate (BGO) anti-Compton shield (ACS) for Compex germanium detector modules was designed, built, and characterised. BGO performance was evaluated for light output and energy resolution. The response of the ACS shield and its impact on germanium detector spectra was measured for standard 60Co, 133Ba, and 137Cs sources. The results were compared to comprehensive Geant4 simulations. The ~70% improvement of the peak-to-total ratio for the 137Cs 662-keV γ-ray peak is in good agreement with expectations from the simulations. A 133Ba source exemplifies decay schemes of odd-A superheavy nuclei. Congruence between measured and simulated spectra indicates that the Compex... (More)
A bismuth-germanate (BGO) anti-Compton shield (ACS) for Compex germanium detector modules was designed, built, and characterised. BGO performance was evaluated for light output and energy resolution. The response of the ACS shield and its impact on germanium detector spectra was measured for standard 60Co, 133Ba, and 137Cs sources. The results were compared to comprehensive Geant4 simulations. The ~70% improvement of the peak-to-total ratio for the 137Cs 662-keV γ-ray peak is in good agreement with expectations from the simulations. A 133Ba source exemplifies decay schemes of odd-A superheavy nuclei. Congruence between measured and simulated spectra indicates that the Compex plus ACS multi-detector module is well understood. (Less)
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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
nuclear structure, scintillators, BGO crystals, anti-Compton shield
in
Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
volume
1056
article number
168682
pages
8 pages
publisher
Elsevier
external identifiers
  • scopus:85171889203
ISSN
0168-9002
DOI
10.1016/j.nima.2023.168682
project
Characterization of the Anti-Compton Shield for COMPEX Germanium Detectors and Proton-gamma Spectroscopy in the Upper fp Shell
Characterization of New Superheavy Elements
Nuclear Structure at the Limits: Isotope-selective Spectroscopy
language
English
LU publication?
yes
id
a45ee739-b667-4472-909e-aae0b7516626
alternative location
https://www.sciencedirect.com/science/article/pii/S0168900223006721
date added to LUP
2023-09-14 22:14:11
date last changed
2023-12-17 04:06:56
@article{a45ee739-b667-4472-909e-aae0b7516626,
  abstract     = {{A bismuth-germanate (BGO) anti-Compton shield (ACS) for Compex germanium detector modules was designed, built, and characterised. BGO performance was evaluated for light output and energy resolution. The response of the ACS shield and its impact on germanium detector spectra was measured for standard <sup>60</sup>Co, <sup>133</sup>Ba, and <sup>137</sup>Cs sources. The results were compared to comprehensive Geant4 simulations. The ~70% improvement of the peak-to-total ratio for the <sup>137</sup>Cs 662-keV γ-ray peak is in good agreement with expectations from the simulations. A <sup>133</sup>Ba source exemplifies decay schemes of odd-<i>A</i> superheavy nuclei. Congruence between measured and simulated spectra indicates that the Compex plus ACS multi-detector module is well understood.}},
  author       = {{Hrabar, Yuliia and Sarmiento Pico, Luis and Golubev, Pavel and Bobovnikov, O. and Cox, Daniel and Rudolph, Dirk}},
  issn         = {{0168-9002}},
  keywords     = {{nuclear structure; scintillators; BGO crystals; anti-Compton shield}},
  language     = {{eng}},
  month        = {{09}},
  publisher    = {{Elsevier}},
  series       = {{Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment}},
  title        = {{Anti-Compton shield for Compex germanium detector modules}},
  url          = {{http://dx.doi.org/10.1016/j.nima.2023.168682}},
  doi          = {{10.1016/j.nima.2023.168682}},
  volume       = {{1056}},
  year         = {{2023}},
}