Monte Carlo simulation of background components in low level Germanium spectrometry

Nicola Ackermann, Hannes Bonet,Christian Buck,Oleg Chkvorets,Janina Hakenmueller,Gerd Heusser,Matthias Laubenstein,Manfred Lindner,Werner Maneschg,Jochen Schreiner, Herbert Strecker

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine（2023）

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Abstract

This proceeding presents the decomposition of the background spectra of the four screening detectors GeMPI 1 - 4 at the Gran Sasso Underground Laboratory (LNGS) using Monte Carlo simulations in the Geant4-based framework MaGe. A detailed understanding of the composition of the background spectra was achieved, allowing for the proposal of two new shield designs for future GeMPI-like detectors and enabling a reduction of the integrated background count rate to 15 counts/d/kg in the interval [40, 2700] keV.

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Key words

Material screening,Germanium spectroscopy,Monte Carlo simulation,Background,Low radiation

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