Scintillation detectors are essential tools for radiation measurement, but calibrating them accurately can be challenging, especially when full-energy peaks are not prominent. This is common in detectors like plastic scintillators. Current methods for calibrating these detectors often require manual adjustments. To address this, we propose a new method called the convolution model. This model accurately calibrates the energy-channel relationship of the Compton edge in various detectors. We tested it with plastic scintillator BC408, NaI crystal, and LaBr3 crystal. Using 137Cs radioactive sources, we calibrated NaI and LaBr3 detectors using full-energy peaks, then applied the convolution model to fit the Compton edge. Our results show errors within 1\% when compared to full-energy peak calibration.
@article{arxiv.2404.06950,
title = {Compton Edge Convolutional Model and Algorithm for Energy-channel Calibration},
author = {Yanbiao Zhang and Fanjie Zeng and Dehua Kong and Lian Lei and Zhonghai Wang},
journal= {arXiv preprint arXiv:2404.06950},
year = {2025}
}
Comments
17 pages, 8 figures. This article proposes a convolution model for accurately fitting the energy-channel relationship of the Compton edge in scintillation detectors, validated through experiments with plastic scintillator BC408, NaI crystal, and LaBr$_3$ crystal, showcasing errors within 1% when compared to full-energy peak calibration methods