A feasibility study of multi-electrode high-purity germanium detector for <sup>76</sup>Ge neutrinoless double beta decay searching
نویسندگان
چکیده
Abstract Experiments to search for neutrinoless double-beta (0 νββ ) decay of 76 Ge using a high-purity germanium (HPGe) detector rely heavily on background suppression technologies enhance their sensitivities. In this work, we proposed pulse-shape analysis method based neural network (NN) and light gradient boosting machine (lightGBM; LGB) discriminate single-electron (background) double-electrons signal) events in multi-electrode HPGe detector. paper, describe system, data-processing simulation procedures. We built fully connected (FC) an LGB model classify the single- double-electron events. The FC is trained with simulated double-electron-induced pulses tested independent dataset generated by simulation. discrimination efficiency test set 0 signal was 77.4%, precision 57.7%, training time 430 min. 73.1%, 64.0%, 1.5 This study demonstrated that it feasible realize detectors model. These results can be used as reference future experiments.
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ژورنال
عنوان ژورنال: Journal of Instrumentation
سال: 2023
ISSN: ['1748-0221']
DOI: https://doi.org/10.1088/1748-0221/18/05/p05025