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

Rofors, E. et al. (2021) Response of a Li-glass/multi-anode photomultiplier detector to collimated thermal-neutron beams. Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 999, 165170. (doi: 10.1016/j.nima.2021.165170)

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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 x 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.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Boyd, Laura and Annand, Dr John and Al Jebali, Dr Ramsey and Seitz, Dr Bjoern and Montgomery, Dr Rachel and Hall-Wilton, Professor Richard
Creator Roles:
Al Jebali, R.Conceptualization, Methodology, Investigation, Resources, Supervision
Annand, J.R.M.Conceptualization, Methodology, Software, Validation, Formal analysis, Writing – original draft, Writing – review and editing, Visualization, Supervision
Boyd, L.Supervision
Hall-Wilton, R.Conceptualization, Resources, Supervision, Project administration, Funding acquisition
Montgomery, R.Supervision
Seitz, B.Supervision
Authors: Rofors, E., Mauritzson, N., Perrey, H., Al Jebali, R., Annand, J.R.M., Boyd, L., Christensen, M.J., Clemens, U., Desert, S., Engels, R., Fissum, K.G., Frielinghaus, H., Gheorghe, C., Hall-Wilton, R., Jaksch, S., Kanaki, K., Kazi, S., Kemmerling, G., Llamas Jansa, I., Maulerova, V., Montgomery, R., Richter, T., Scherzinger, J., Seitz, B., and Shetty, M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
Publisher:Elsevier
ISSN:0168-9002
ISSN (Online):1872-9576
Published Online:25 February 2021
Copyright Holders:Copyright © 2021 The Authors
First Published:First published in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment 999: 165170
Publisher Policy:Reproduced under a Creative Commons License
Data DOI:10.5281/zenodo.4095210

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
301379Nuclear Physics Consolidated GrantDavid IrelandScience and Technology Facilities Council (STFC)ST/P004458/1P&S - Physics & Astronomy
190828EPSRC Centre for Doctoral Training in Sensing and MeasurementAndrew HarveyEngineering and Physical Sciences Research Council (EPSRC)EP/L016753/1P&S - Physics & Astronomy