Compton Edge Convolutional Model and Algorithm for Energy-channel Calibration
Yanbiao Zhang, Fanjie Zeng, Dehua Kong, Lian Lei, Zhonghai Wang
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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
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 LaBr$_3$ crystal. Using ${}^{137}$Cs radioactive sources, we calibrated NaI and LaBr$_3$ 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.
Low-Energy Calibration of SuperCDMS HVeV Cryogenic Silicon Calorimeters Using Compton Steps
University of British Columbia（不列颠哥伦比亚大学）；University of Toronto（多伦多大学）；Durham University（杜伦大学）；SLAC National Accelerator Laboratory（斯坦福直线加速器中心）；Kavli Institute for Particle Astrophysics and Cosmology（卡弗里粒子天体物理与宇宙学研究所）；Northeastern University（东北大学）；Mitchell Institute for Fundamental Physics and Astronomy（米歇尔基础物理与天文学研究所）；University of Florida（佛罗里达大学）；Pacific Northwest National Laboratory（太平洋西北国家实验室）；Stanford University（斯坦福大学）；Southern Methodist University（南方卫理公会大学）；University of California, Berkeley（加州大学伯克利分校）；National Institute of Science Education and Research（国家科学教育与研究学院）；Homi Bhabha National Institute（霍米·巴巴国家研究所）；Northwestern University（西北大学）；South Dakota School of Mines and Technology（南达科他矿业理工学院）；SNOLAB（萨诺实验室）；University of Minnesota（明尼苏达大学）；Queen's University（女王大学）；University of South Dakota（南达科他大学）；University of Colorado Denver（科罗拉多大学丹佛分校）；Zayed University（扎耶德大学）；California Institute of Technology（加州理工学院）；Laurentian University（劳伦森大学）；Fermi National Accelerator Laboratory（费米国家加速器实验室）；Karlsruhe Institute of Technology（卡尔斯鲁厄理工学院）；Institute for Astroparticle Physics（天体粒子物理研究所）；Lawrence Berkeley National Laboratory（劳伦斯伯克利国家实验室）
