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We describe a new high-purity germanium (HPGe) detector setup for low-background {\gamma}-ray spectrometry. The GeMSE facility (Germanium Material and meteorite Screening Experiment) is dedicated to material screening for rare event…

Instrumentation and Detectors · Physics 2017-01-06 M. v. Sivers , B. A. Hofmann , Å. V. Rosén , M. Schumann

The GeMSE (Germanium Material and meteorite Screening Experiment) facility operates a low-background HPGe crystal in an underground laboratory with a moderate rock overburden of 620$\,$m.w.e. in Switzerland. It has been optimized for…

The next generation of low-background physics experiments will require the use of materials with unprecedented radio-purity. A gamma-counting facility at the Kimballton Underground Research Facility (KURF) has been commissioned to perform…

Nuclear Experiment · Physics 2011-05-25 P. Finnerty , S. MacMullin , H. O. Back , R. Henning , A. Long , K. T. Macon , J. Strain , R. M. Lindstrom , R. B. Vogelaar

A new ultra low-level counting setup has been installed in the shallow-underground laboratory Felsenkeller in Dresden, Germany. It includes a high-purity germanium detector (HPGe) of 163\% relative efficiency within passive and active…

Instrumentation and Detectors · Physics 2023-02-09 S. Turkat , D. Bemmerer , A. Boeltzig , A. R. Domula , J. Koch , T. Lossin , M. Osswald , K. Schmidt , K. Zuber

The main background above 3\,MeV for in-beam nuclear astrophysics studies with $\gamma$-ray detectors is caused by cosmic-ray induced secondaries. The two commonly used suppression methods, active and passive shielding, against this kind of…

Instrumentation and Detectors · Physics 2015-03-25 T. Szücs , D. Bemmerer , T. P. Reinhardt , K. Schmidt , M. P. Takács , A. Wagner , L. Wagner , D. Weinberger , K. Zuber

A new ultra-low background high-purity germanium (HPGe) detector has been installed at the Kamioka underground experimental site. The background count rate in the energy range from 40 keV to 2700 keV is about 25% lower than that of the…

Instrumentation and Detectors · Physics 2023-12-05 K. Ichimura , H. Ikeda , Y. Kishimoto , M. Kurasawa , A. A. Suzuki , Y. Gando , M. Ikeda , K. Hosokawa , H. Sekiya , H. Ito , A. Minamino , S. Suzuki

In low activity gamma spectrometric measurements of large, dense samples, the bulk sample material shields the HPGe crystal from external background sources. If not accounted for in studies that utilise background-subtraction methods, this…

Instrumentation and Detectors · Physics 2022-09-08 M. Thiesse , P. Scovell , L. Thompson

As we move to an era where next generation low-background particle physics experiments begin to be designed and constructed, the ability to assay materials with high sensitivity and at speed with a variety of techniques will be key. This…

Instrumentation and Detectors · Physics 2025-03-28 P. R. Scovell , E. Meehan , S. M. Paling , M. Thiesse , X. Liu , C. Ghag , M. Ginsz , P. Quirin , D. Ralet

We are currently setting up a facility for low-background gamma-ray spectrometry based on a HPGe detector. It is dedicated to material screening for the XENON and DARWIN dark matter projects as well as to the characterization of meteorites.…

Instrumentation and Detectors · Physics 2015-10-21 M. von Sivers , B. A. Hofmann , Å. V. Rosén , M. Schumann

Measurements with a bare p-type high purity germanium diode (HPGe) submerged in a 19 kg liquid argon (LAr) scintillation detector at MPIK Heidelberg are reported. The liquid argon--germanium system (LArGe) is operated as a 4$\pi$…

Instrumentation and Detectors · Physics 2008-11-26 M. Di Marco , P. Peiffer , S. Schönert

High-purity germanium detectors are well suited to analysis the radioactivity of samples. In order to reduce the environmental background, low-activity lead and oxygen free copper are installed outside of the probe to shield gammas, outmost…

The Boulby Underground Germanium Suite (BUGS) comprises three low background, high-purity germanium detectors operating in the Boulby Underground Laboratory, located 1.1 km underground in the north-east of England, UK. BUGS utilises three…

Germanium detectors have very good capabilities for the investigation of rare phenomena like the neutrinoless double beta decay. Rejection of the background entangling the expected signal is one primary goal in this kind of experiments.…

Nuclear Experiment · Physics 2008-11-26 H. Gómez , S. Cebrián , J. Morales , J. A. Villar

The MAJORANA Collaboration is building the MAJORANA DEMONSTRATOR, a 60 kg array of high purity germanium detectors housed in an ultra-low background shield at the Sanford Underground Laboratory in Lead, SD. The MAJORANA DEMONSTRATOR will…

The relevant interaction energies for astrophysical radiative capture reactions are very low, much below the repulsive Coulomb barrier. This leads to low cross sections, low counting rates in $\gamma$-ray detectors, and therefore the need…

Nuclear Experiment · Physics 2019-10-15 T. Szücs , D. Bemmerer , D. Degering , A. Domula , M. Grieger , F. Ludwig , K. Schmidt , J. Steckling , S. Turkat , K. Zuber

A gamma counting station based on high-purity germanium (HPGe) detector was set up for the material screening of the PandaX dark matter experiments in the China Jinping Underground Laboratory. Low background gamma rate of 2.6 counts/min…

Instrumentation and Detectors · Physics 2016-12-21 Xuming Wang , Xun Chen , Changbo Fu , Xiangdong Ji , Xiang Liu , Yajun Mao , Hongwei Wang , Siguang Wang , Pengwei Xie , Tao Zhang

The background spectrum of a germanium detector, shielded from the radiations arriving from the lower and open for the radiations arriving from the upper hemisphere is studied, both in a ground level and in an underground laboratory. It is…

Instrumentation and Detectors · Physics 2015-06-15 R. Banjanac , D. Maletić , D. Joković , N. Veselinović , A. Dragić , V. Udovičić , I. Aničin

We describe the upgrade and performance of the high-purity germanium counting facility Gator, which is dedicated to low-background $\gamma$-ray spectrometry. Gator is operated at the Gran Sasso Underground Laboratory in Italy, at an average…

Instrumentation and Detectors · Physics 2022-08-24 G. R. Araujo , L. Baudis , Y. Biondi , A. Bismark , M. Galloway

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 (~…

Instrumentation and Detectors · Physics 2023-10-20 O. Fawwaz , H. Shams , F. Arneodo , A. Di Giovanni

An infrastructure to characterize germanium detectors has been designed and constructed at the HADES Underground Research Laboratory, located in Mol (Belgium). Thanks to the 223m overburden of clay and sand, the muon flux is lowered by four…

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