Universität zu Köln

Mayer, Jan ORCID: 0000-0002-8781-5338, Hoemann, Elena, Muellenmeister, Markus, Scholz, Philipp and Zilges, Andreas ORCID: 0000-0002-9328-799X (2020). Efficient determination of HPGe gamma-ray efficiencies at high energies with ready-to-use simulation software. Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip., 972. AMSTERDAM: ELSEVIER. ISSN 1872-9576

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Abstract

The full-energy-peak efficiency of HPGe detectors at gamma-ray energies around 10MeV is not easily accessible with experimental methods. Monte-Carlo simulations with GEANT4 can provide these efficiencies. G4Horus is a ready-to-use GEANT4 application for the HORUS HPGe-detector array. Users can configure the modular parts to match their experiment with minimal knowledge of the simulation software and limited time commitment. In our case, knowing and implementing the geometry with high precision is the biggest challenge. To implement the different target chambers, we transform the existing CAD models to GEANT4 geometry with CADMESH. We also found a large discrepancy between experimental and simulated efficiency for some older HPGe detectors, which could be remedied by introducing a large dead region around the inner core. This project is open source and available from https://github.com/janmayer/G4Horus (Mayer 2020). We invite everyone to adapt the project or adopt parts of the code for other projects.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Mayer, Jan UNSPECIFIED orcid.org/0000-0002-8781-5338 UNSPECIFIED Hoemann, Elena UNSPECIFIED UNSPECIFIED UNSPECIFIED Muellenmeister, Markus UNSPECIFIED UNSPECIFIED UNSPECIFIED Scholz, Philipp UNSPECIFIED UNSPECIFIED UNSPECIFIED Zilges, Andreas UNSPECIFIED orcid.org/0000-0002-9328-799X UNSPECIFIED
URN:	urn:nbn:de:hbz:38-322825
DOI:	10.1016/j.nima.2020.164102
Journal or Publication Title:	Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip.
Volume:	972
Date:	2020
Publisher:	ELSEVIER
Place of Publication:	AMSTERDAM
ISSN:	1872-9576
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute for Nuclear Physics
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language INTENSITY MEASUREMENTS; DETECTOR; CALIBRATION; STANDARD; LAYER Multiple languages Instruments & Instrumentation; Nuclear Science & Technology; Physics, Nuclear; Physics, Particles & Fields Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/32282