High Energy Physics - Experiment
[Submitted on 7 Oct 2025
]
Title: Unified framework for precise background modeling to enhance rare event detection at the Kuo-Sheng nuclear reactor laboratory
Title: 郭生核反应堆实验室中用于精确背景建模的统一框架以增强罕见事件检测
Abstract: A background model has been designed for TEXONO experiment using Geant4 sim- ulation software. The contamination of different radioactive isotopes in the detector background has been considered from both the detector set-up and the environment. 238 U and 232 Th have been confined in the front end electronics of the HPGe detector. These two isotopes are confined by breaking the complete chains into constituent decay chains on the basis of half-life of the isotopes. 235 U isotope is also confined in the front end electronics of the pre-amplifier. 40 K gets confined in NaI(Tl) Anti-Compton Veto (ACV) detector where 137 Cs has been confined in CsI(Tl) ACV detector. The detector environment gets confined with 60 Co, 54 Mn, and 135 Xe. Five million events have been considered in each confinement. The amplitudes of the experimental and simulated peaks have been matched by adjusting the activity of the simulated decay chain.
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