Cieślak, M.J., Gamage, K.A.A. , Glover, R. and Taylor, C.J. (2019) Pulse shape discrimination performance of a pixelated plastic scintillator (EJ-299-34) for a coded-aperture based dual particle imaging system. Journal of Instrumentation, 14(7), P07017. (doi: 10.1088/1748-0221/14/07/P07017)
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191239.pdf - Published Version Available under License Creative Commons Attribution. 1MB |
Abstract
The pulse shape discrimination performance of a pixelated organic plastic scintillator has been investigated. The scintillator has been built using 169 plastic scintillator blocks (arranged into a 13 × 13 square array) of 2.8 × 2.8 × 15 mm3 each. The scintillator was coupled with a single-channel photomultiplier tube. The scintillator was exposed to a mixed-field environment provided by 252Cf and its pulse shape discrimination capabilities are presented in this paper. Initial results revealed that a 150 MS/s digitising system was insufficient to separate neutrons from gamma-ray photons. Therefore, the experiment was repeated with a 500 MS/s system, which provided improved pulse shape discrimination performance. In order to validate the performance of the pixelated plastic scintillator, it was compared to that of a cylindrical plastic sample. Tests were also carried out in moderated neutron and gamma-ray fields of 252Cf. The results indicate that acceptable levels of pulse shape discrimination are obtained for the case of a pixelated scintillator, when the higher sampling rate digitiser was used.
| Item Type: | Articles |
|---|---|
| Additional Information: | The authors would like to acknowledge the funding support from EPSRC (EP/M507891/1 and EP/R02572X/1), the Faculty of Science and Technology (Lancaster University, U.K.) and Sellafield Ltd. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Gamage, Professor Kelum |
| Authors: | Cieślak, M.J., Gamage, K.A.A., Glover, R., and Taylor, C.J. |
| College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Journal Name: | Journal of Instrumentation |
| Publisher: | IOP Publishing |
| ISSN: | 1748-0221 |
| ISSN (Online): | 1748-0221 |
| Published Online: | 25 July 2019 |
| Copyright Holders: | Copyright © 2019 The Authors |
| First Published: | First published in Journal of Instrumentation 14(7): P07017 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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