Influence of depth of interaction upon the performance of scintillator detectors

Mark S Brown; Stefan Gundacker; Alaric Taylor; Clemens Tummeltshammer; Etiennette Auffray; Paul Lecoq; Ioannis Papakonstantinou

doi:10.1371/journal.pone.0098177

Influence of depth of interaction upon the performance of scintillator detectors

PLoS One. 2014 May 29;9(5):e98177. doi: 10.1371/journal.pone.0098177. eCollection 2014.

Authors

Mark S Brown¹, Stefan Gundacker², Alaric Taylor¹, Clemens Tummeltshammer¹, Etiennette Auffray², Paul Lecoq², Ioannis Papakonstantinou¹

Affiliations

¹ Electrical and Electronic Engineering, UCL, London, United Kingdom.
² PH-CMX Group, CERN, Geneva, Switzerland.

Abstract

The uncertainty in time of particle detection within a scintillator detector, characterised by the coincidence time resolution (CTR), is explored with respect to the interaction position within the scintillator crystal itself. Electronic collimation between two scintillator detectors is utilised to determine the CTR with depth of interaction (DOI) for different materials, geometries and wrappings. Significantly, no relationship between the CTR and DOI is observed within experimental error. Confinement of the interaction position is seen to degrade the CTR in long scintillator crystals by 10%.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Radiation, Ionizing*
Scintillation Counting / instrumentation*
Scintillation Counting / methods*

Grants and funding

The work was carried out in collaboration between the Photonic Systems Development CDT (https://www.ipes-cdt.org/) and the Crystal Clear Collaboration (http://crystalclear.web.cern.ch/crystalclear/). The primary author's funding was provided by the EPSRC (http://www.epsrc.ac.uk). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.