Monte carlo modelling of germanium crystals that are tilted and have rounded front edges

Gasparro, J, Hult, M, Johnston, P and Tagziria, H 2008, 'Monte carlo modelling of germanium crystals that are tilted and have rounded front edges', Nuclear Instruments and Methods in Physics Research Section A, vol. 594, no. 2, pp. 196-201.


Document type: Journal Article
Collection: Journal Articles

Title Monte carlo modelling of germanium crystals that are tilted and have rounded front edges
Author(s) Gasparro, J
Hult, M
Johnston, P
Tagziria, H
Year 2008
Journal name Nuclear Instruments and Methods in Physics Research Section A
Volume number 594
Issue number 2
Start page 196
End page 201
Total pages 6
Publisher Elsevier
Abstract Gamma-ray detection efficiencies and cascade summing effects in germanium detectors are often calculated using Monte Carlo codes based on a computer model of the detection system. Such a model can never fully replicate reality and it is important to understand how various parameters affect the results. This work concentrates on quantifying two issues, namely (i) the effect of having a Ge-crystal that is tilted inside the cryostat and (ii) the effect of having a model of a Ge-crystal with rounded edges (bulletization). The effect of the tilting is very small (in the order of per mille) when the tilting angles are within a realistic range. The effect of the rounded edges is, however, relatively large (5-10% or higher) particularly for gamma-ray energies below 100 keV.
Subject Synchrotrons; Accelerators; Instruments and Techniques
Keyword(s) cryostats
gamma-ray detection
germanium
germanium radiation detectors
high energy physics instrumentation computing
Monte Carlo methods
DOI - identifier 10.1016/j.nima.2008.06.022
Copyright notice © 2008 Elsevier B.V. All rights reserved.
ISSN 0168-9002
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