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Response of a Li-glass/multi-anode photomultiplier detector to collimated thermal-neutron beams

Rofors, E. LU ; Mauritzson, N. LU ; Perrey, H. LU ; Al Jebali, R. ; Annand, J. R.M. LU ; Boyd, L. ; Christensen, M. J. ; Clemens, U. ; Desert, S. and Engels, R. , et al. (2021) In Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 999.
Abstract

The response of a position-sensitive Li-glass scintillator detector being developed for thermal-neutron detection with 6 mm position resolution has been investigated using collimated beams of thermal neutrons. The detector was moved perpendicularly through the neutron beams in 0.5 to 1.0 mm horizontal and vertical steps. Scintillation was detected in an 8 × 8 pixel multi-anode photomultiplier tube on an event-by-event basis. In general, several pixels registered large signals at each neutron-beam location. The number of pixels registering signal above a set threshold was investigated, with the maximization of the single-hit efficiency over the largest possible area of the detector as the primary goal. At a threshold of ∼50% of the mean... (More)

The response of a position-sensitive Li-glass scintillator detector being developed for thermal-neutron detection with 6 mm position resolution has been investigated using collimated beams of thermal neutrons. The detector was moved perpendicularly through the neutron beams in 0.5 to 1.0 mm horizontal and vertical steps. Scintillation was detected in an 8 × 8 pixel multi-anode photomultiplier tube on an event-by-event basis. In general, several pixels registered large signals at each neutron-beam location. The number of pixels registering signal above a set threshold was investigated, with the maximization of the single-hit efficiency over the largest possible area of the detector as the primary goal. At a threshold of ∼50% of the mean of the full-deposition peak, ∼80% of the events were registered in a single pixel, resulting in an effective position resolution of ∼5 mm in X and Y. Lower thresholds generally resulted in events demonstrating higher pixel multiplicities, but these events could also be localized with ∼5 mm position resolution.

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type
Contribution to journal
publication status
published
subject
keywords
European spallation source, GS20 scintillator, H12700A multi-anode photomultiplier, Li-glass, Neutrons, Position-dependent response, SoNDe thermal-neutron detector
in
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
volume
999
article number
165170
publisher
Elsevier
external identifiers
  • scopus:85102269854
ISSN
0168-9002
DOI
10.1016/j.nima.2021.165170
language
English
LU publication?
yes
id
d59b3850-74f2-46aa-a473-b30b8587ec51
date added to LUP
2021-03-23 12:37:35
date last changed
2021-03-23 12:37:35
@article{d59b3850-74f2-46aa-a473-b30b8587ec51,
  abstract     = {<p>The response of a position-sensitive Li-glass scintillator detector being developed for thermal-neutron detection with 6 mm position resolution has been investigated using collimated beams of thermal neutrons. The detector was moved perpendicularly through the neutron beams in 0.5 to 1.0 mm horizontal and vertical steps. Scintillation was detected in an 8 × 8 pixel multi-anode photomultiplier tube on an event-by-event basis. In general, several pixels registered large signals at each neutron-beam location. The number of pixels registering signal above a set threshold was investigated, with the maximization of the single-hit efficiency over the largest possible area of the detector as the primary goal. At a threshold of ∼50% of the mean of the full-deposition peak, ∼80% of the events were registered in a single pixel, resulting in an effective position resolution of ∼5 mm in X and Y. Lower thresholds generally resulted in events demonstrating higher pixel multiplicities, but these events could also be localized with ∼5 mm position resolution.</p>},
  author       = {Rofors, E. and Mauritzson, N. and Perrey, H. and Al Jebali, R. and Annand, J. R.M. and Boyd, L. and Christensen, M. J. and Clemens, U. and Desert, S. and Engels, R. and Fissum, K. G. and Frielinghaus, H. and Gheorghe, C. and Hall-Wilton, R. and Jaksch, S. and Kanaki, K. and Kazi, S. and Kemmerling, G. and Llamas Jansa, I. and Maulerova, V. and Montgomery, R. and Richter, T. and Scherzinger, J. and Seitz, B. and Shetty, M.},
  issn         = {0168-9002},
  language     = {eng},
  publisher    = {Elsevier},
  series       = {Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment},
  title        = {Response of a Li-glass/multi-anode photomultiplier detector to collimated thermal-neutron beams},
  url          = {http://dx.doi.org/10.1016/j.nima.2021.165170},
  doi          = {10.1016/j.nima.2021.165170},
  volume       = {999},
  year         = {2021},
}