https://doi.org/10.1140/epjti/s40485-025-00118-2
Research Article
A novel HPGe-BGO pair spectrometer
1
Institute of Nuclear Physics, Technical University of Darmstadt, Schlossgartenstraße 9, 64289, Darmstadt, Hessen, Germany
2
Institute of Nuclear Physics, University of Cologne, Zülpicher Straße 77, 50937, Cologne, Nordrhein-Westfalen, Germany
3
Institut Laue-Langevin, 71 avenue des Martyrs, 38042, Grenoble, Auvergne-Rhône-Alpes, France
4
Extreme Light Infrastructure - Nuclear Physics, Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering, Strada Reactorului 30, 077125, Bucharest-Magurele, Ilfov, Romania
5
Argonne National Laboratory, 9700 S. Cass Ave, 60439, Lemont, Illinois, USA
6
IJCLab, IN2P3/CNRS, and Université Paris-Saclay, 15 rue Georges Clémenceau, 91405, Orsay, Île-de-France, France
7
University of Guelph, 50 Stone Road East, N1G 2W1, Guelph, Ontario, Canada
a
iljahomm@gmail.com
b
tkroell@ikp.tu-darmstadt.de
Received:
16
May
2025
Accepted:
8
September
2025
Published online:
26
September
2025
We report on a novel design for a HPGe-BGO pair spectrometer with the aim to enhance the performance of existing HPGe detectors for high-energy γ-rays. In addition, the BGO shield as a standalone detector allows for a use with the selective detection of positron annihilation. The compact geometry was optimized to use it with ELIADE, the HPGe array at VEGA (ELI-NP). We present the design, results from two commissioning runs with high-energy γ-rays and an outlook to future applications.
Key words: Pair production / Anti-Compton shield / Pair spectrometer
© The Author(s) 2025
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