Traditional ways of determining the absolute full-energy peak efficiencies of high-purity germanium (HPGe) detectors are often
time consuming, cost prohibitive, or not feasible. A software package, KMESS (Kevin’s Mesh Efficiency Simulator Software),
was developed to assist in predicting these efficiencies. It uses a semi-empirical mesh-grid method and works for arbitrary
source shapes and counting geometries. The model assumes that any gamma-ray source shape can be treated as a large enough
collection of point sources. The code is readily adaptable, has a web-based graphical front-end, and could easily be coupled
to a 3D scanner. As will be shown, this software can estimate absolute full-energy peak efficiencies with good accuracy in
reasonable computation times. It has applications to the field of gamma-ray spectroscopy because it is a quick and accurate
way to assist in performing quantitative analyses using HPGe detectors.
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