Optimizing a Broad Energy High Purity Germanium (BEGe) Detector Operated at Shallow Depth in Abu Dhabi

O. Fawwaz; H. Shams; F. Arneodo; A. Di Giovanni

Optimizing a Broad Energy High Purity Germanium (BEGe) Detector Operated at Shallow Depth in Abu Dhabi

Instrumentation and Detectors 2023-10-20 v1

Authors: O. Fawwaz , H. Shams , F. Arneodo , A. Di Giovanni

Abstract

In this work we present the characterization of a Broad Energy Germanium (BEGe) type High Purity Germanium (HPGe) detector, with a carbon fiber entrance window thickness of 0.6 mm and an active area of 6305 mm2, operated at shallow depth (~ 8m) in Abu Dhabi, UAE. A 1.6 keV Full Width Half Maximum (FWHM) was obtained for the 662 keV peak of 137Cs. A muon veto was applied, reducing the background by 8 % (for energies greater than 100 keV). Flushing the volume around the detector endcap with nitrogen gas, to remove radon and thus its progeny, further reduced the background by ~3 %. A thorough analysis for the shaping filter parameters showed that the detector has better resolution at low rise-time values (2 - 5 us) especially for low energy gamma (<600keV), keeping the flattop value fixed at 1.1 us.

Keywords

broad energy germanium detector high purity germanium shallow depth muon veto radon suppression shaping filter gamma spectroscopy

Cite

@article{arxiv.2310.12654,
  title  = {Optimizing a Broad Energy High Purity Germanium (BEGe) Detector Operated at Shallow Depth in Abu Dhabi},
  author = {O. Fawwaz and H. Shams and F. Arneodo and A. Di Giovanni},
  journal= {arXiv preprint arXiv:2310.12654},
  year   = {2023}
}

Optimizing a Broad Energy High Purity Germanium (BEGe) Detector Operated at Shallow Depth in Abu Dhabi

Abstract

Keywords

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