Characterization of the Plastic Scintillator Detector System Exradin W2 in a High Dose Rate Flattening-Filter-Free Photon Beam

Authors

Sara Thrower
Surendra Prajapati
Shannon Holmes
Emil Schüler
Sam Beddar

Publication Date

9-8-2022

Journal

Sensors

DOI

10.3390/s22186785

PMID

36146135

PMCID

PMC9505273

PubMedCentral® Posted Date

September 2022

PubMedCentral® Full Text Version

Post-print

Abstract

(1) Background: The Exradin W2 is a commercially available scintillator detector designed for reference and relative dosimetry in small fields. In this work, we investigated the performance of the W2 scintillator in a 10 MV flattening-filter-free photon beam and compared it to the performance of ion chambers designed for small field measurements. (2) Methods: We measured beam profiles and percent depth dose curves with each detector and investigated the linearity of each system based on dose per pulse (DPP) and pulse repetition frequency. (3) Results: We found excellent agreement between the W2 scintillator and the ion chambers for beam profiles and percent depth dose curves. Our results also showed that the two-voltage method of calculating the ion recombination correction factor was sufficient to correct for the ion recombination effect of ion chambers, even at the highest DPP. (4) Conclusions: These findings show that the W2 scintillator shows excellent agreement with ion chambers in high DPP conditions.

Keywords

Photons, Plastics, Radiometry, Exradin W2, plastic scintillator, flattening-filter-free, high dose rate, output constancy, high dose per pulse, dosimetry

Published Open-Access

yes

Recommended Citation

Thrower, Sara; Prajapati, Surendra; Holmes, Shannon; et al., "Characterization of the Plastic Scintillator Detector System Exradin W2 in a High Dose Rate Flattening-Filter-Free Photon Beam" (2022). Faculty, Staff and Student Publications. 234.
https://digitalcommons.library.tmc.edu/uthgsbs_docs/234