Calculation of true coincidence summing correction factor for a Broad Energy Germanium (BEGe) detector using standard and fabricated sources
Ashish Gupta, M. Shareef, Munmun Twisha, Saikat Bhattacharjee, Gopal Mukherjee, Satya Samiran Nayak, Sansaptak Basu, S. Dasgupta, J. Datta, S. Bhattacharyya, A. Mukherjee
The true coincidence summing (TCS) correction factor for a Broad Energy Germanium (BEGe) detector has been calculated at far and close geometry measurement using multi-energetic radioactive $γ$-ray sources $^{60}$Co, $^{133}$Ba and $^{152}$Eu. The correction factors were calculated using experimental method and analytical method. Photopeak efficiency and total efficiency required to calculate the correction factor were obtained using Geant4 Monte Carlo simulation code. A few standard as well as fabricated mono-energetic sources were also included in the $γ$-ray efficiency measurements. The simulated efficiencies of mono-energetic $γ$-ray sources were matched to experimental $γ$-ray efficiencies by optimizing the detector parameters. The same parameters were used to obtain the photopeak and total efficiency for $γ$-ray of our interest and coincident $γ$-ray. Analytical correction factors and experimental correction factors were found in good agreement with each other.
Isotopically modified Ge detectors for {\sc Gerda}: from production to operation
\textsc{Gerda}实验通过新颖的脉冲形状鉴别（PSD）技术来搜索无中微子双β（$0νβ$ β $) decay of $ ^{76} $Ge using high-purity germanium detectors made of material enriched in $ ^{76} $Ge. For Phase II of the experiment a sensitivity for the half life $ T_{1/2} ^{0ν}\，\，\sim 2 \cdot 10^{26} $ yr is envisioned. Modified Broad Energy Germanium detectors (BEGe) with thick n$ ^+ $ electrodes provide the capability to efficiently identify and reject background events, while keeping a large acceptance for the $ 0νβ $beta$ -衰变信号。生产厚窗口BEGe型探测器的\textsc{Gerda}实验的可行性证明了通过测试所有的生产步骤，从采购的同位素改性锗工作BEGe探测器。对\textsc{Gerda} Phase II原型BEGe探测器的光谱…
Pulse shape discrimination studies with a Broad-Energy Germanium detector for signal identification and background suppression in the GERDA double beta decay experiment
Pulse shape discrimination for $α$ event rejection in BEGe-type high-purity germanium detectors
M. Smoluchowski Institute of Physics, Jagiellonian University（马泰乌什·斯莫卢霍夫斯基物理研究所，雅盖隆大学）；Jagiellonian University, Doctoral School of Exact and Natural Sciences（雅盖隆大学，精确与自然科学学院博士学校）
Machine Learning Optimization of BEGe Detector Event Selection in the VIP Experiment
Laboratori Nazionali di Frascati INFN（弗拉斯卡蒂国家实验室意大利核物理研究所）；University of California, Berkeley（加州大学伯克利分校）；Czech Technical University in Prague（布拉格捷克理工大学）；Laboratori Nazionali del Gran Sasso, Istituto Nazionale di Fisica Nucleare（格兰萨索国家实验室意大利核物理研究所）；Stefan Meyer Institute for Subatomic Physics（斯特凡·迈尔亚原子物理学研究所）；Jagiellonian University（雅盖隆大学）
