Evaluating the temperature dependence of an inorganic scintillator detector using the HYPERSCINT research platform

Owen Mc Laughlin; Michael Martyn; Christoph Kleefeld; Mark J. Foley

doi:10.1117/12.2620463

17 May 2022 Evaluating the temperature dependence of an inorganic scintillator detector using the HYPERSCINT research platform

Owen Mc Laughlin, Michael Martyn, Christoph Kleefeld, Mark J. Foley

Author Affiliations +

Proceedings Volume 12139, Optical Sensing and Detection VII; 121390M (2022) https://doi.org/10.1117/12.2620463
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Abstract

Optical fibre scintillation detectors have proven to be a viable alternative in clinical radiation dosimetry. By obtaining active readouts, scintillators can be used to give real time measurements for various clinical and pre-clinical applications from radiology to radiation therapy. Gd₂O₂S:Pr is of interest as a scintillator due to it offering a much higher light output than other scintillators, organic scintillators in particular. Temperature dependence is exhibited by a number of organic scintillators, such as BCF-60; this however needs to be established for the inorganic scintillator Gd₂O₂S:Pr. This study therefore aims to characterize the temperature dependence of Gd₂O₂S:Pr, using the HYPERSCINT Research Platform 200. The detector was immersed in water and the temperature varied from 22.7°C to 49.0°C using a hotplate and temperature controller. Five spectra were recorded and averaged at each of the seven temperatures, in approximately 5°C increments. A decrease in total photon count with temperature was observed of 0.22%/°C between 346 and 631 nm with a decrease of 0.38 in the full width at half maximum at the photopeak of 513 nm. A method of correcting for temperature is necessary in the use of Gd₂O₂S:Pr as a detection material in environments where the temperature differs significantly from the calibration temperature.

Conference Presentation

Citation Download Citation

Owen Mc Laughlin, Michael Martyn, Christoph Kleefeld, and Mark J. Foley "Evaluating the temperature dependence of an inorganic scintillator detector using the HYPERSCINT research platform", Proc. SPIE 12139, Optical Sensing and Detection VII, 121390M (17 May 2022); https://doi.org/10.1117/12.2620463

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