A new low-level γ-ray spectrometry system for environmental radioactivity at the underground laboratory Felsenkeller

Köhler, Matthias; Degering, D.; Laubenstein, M.; Quirin, P.; Lampert, M.-O.; Hult, M.; Arnold, D.; Neumaier, S.; Reyss, Jean-Louis

doi:10.1016/j.apradiso.2009.01.027

Cited by 63 publications

(40 citation statements)

References 13 publications

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“…Two other spectra are shown, rescaled for equal running time: no beam in the same setup (blue curve, [17]), and no beam underground (Felsenkeller, [13]). …”

Section: Discussionmentioning

confidence: 99%

“…Since 1982, one of the tunnels hosts an underground laboratory for low-radioactivity measurements [13]. Two additional tunnels will be readied in 2015 for the installation of a 5 MV ion accelerator for nuclear astrophysics ( fig.…”

Section: Site Status and Background Studiesmentioning

confidence: 99%

“…As an example for an astrophysical application, an in-beam spectrum from an experiment on the 12 C(p,γ) 13 N reaction is shown. The data have been taken at the HZDR 3 MV Tandetron on the Earth's surface ( fig.…”

Section: Example For An Astrophysical Applicationmentioning

confidence: 99%

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Felsenkeller shallow-underground accelerator laboratory for nuclear astrophysics

Bemmerer¹

2015

Proceedings of XIII Nuclei in the Cosmos — PoS(NIC XIII)

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Underground, low-background accelerator-based experiments are an important tool to study nuclear reactions directly at energies relevant for astrophysical processes. This technique has been developed and proven at the 0.4 MV LUNA accelerator in the Gran Sasso laboratory in Italy, shielded from cosmic rays by 1400 m of rock. However, the nuclear reactions of helium and carbon burning and the neutron source reactions for the astrophysical s-process require higher beam energies. The same is true for the study of solar fusion reactions. Therefore, the NuPECC long range plan for nuclear physics in Europe strongly recommends the installation of one or more higher-energy underground accelerators. Detailed background studies have shown that the Felsenkeller shallow-underground laboratory in Dresden, with a rock overburden of 45 m, has very low background in γ-ray detectors typical for nuclear astrophysics experiments when an additional active shield is used to veto the remaining muon flux. A used 5 MV pelletron tandem with 250 µA upcharge current and external sputter ion source is currently being refurbished for installation in Felsenkeller. Work on an additional radio-frequency ion source on the high voltage terminal is underway. The project is fully funded, and the installation of the accelerator in the Felsenkeller laboratory is expected for the near future.

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“…Two other spectra are shown, rescaled for equal running time: no beam in the same setup (blue curve, [17]), and no beam underground (Felsenkeller, [13]). …”

Section: Discussionmentioning

confidence: 99%

Section: Site Status and Background Studiesmentioning

confidence: 99%

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Felsenkeller shallow-underground accelerator laboratory for nuclear astrophysics

Bemmerer¹

2015

Proceedings of XIII Nuclei in the Cosmos — PoS(NIC XIII)

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“…The distance between end cap and detector crystal is 4 mm, the end cap is 1.6 mm aluminium. [3][4][5] Very good collaboration with the manufacturer gave the authors precise information about the entire geometry, which enabled a 3D modelling to enter into the Monte Carlo code.…”

Section: Detector Descriptionmentioning

confidence: 99%

Monte Carlo Simulation of a HP-Ge Pulse Height Spectrum over the Entire Energy Range

Sommer

Reichelt

Helbig

et al. 2011

Progress in Nuclear Science and Technology

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The TU Dresden Monte Carlo code AMOS is used to simulate a low level HP-Ge detector stationed at the Felsenkeller laboratory from the VKTA Rossendorf e.V.. The detector is a p-type 92% HP-Ge detector manufactured by Canberra Industries, Inc. and its geometry is highly determined. Therefore it allows precise digital remodelling, and Monte Carlo calculations are applicable. The simulation program AMOS carries out coupled photon electron transport especially in the low energy region. ENSDF data and beta spectra calculations were implemented to follow quasi-timedependent nuclide decays. In all, this enables a differentiated calculation of pulse height spectra and comparison over the entire energy range.

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“…rock overburden reducing the muon flux by about a factor of 20 to 0.6 · 10 −3 cm −2 s −1 [25,26]. The palladium sample was measured for 16.2 days (13.0 kg·d exposure) with a 90 % efficiency HPGe detector routinely used for gamma-spectrometry [27]. The detector is surrounded by a 5 cm copper shielding embedded in another shielding of 15 cm of low activity lead.…”

Section: Felsenkeller Datasetmentioning

confidence: 99%

Double beta decays into excited states in ¹¹⁰Pd and ¹⁰²Pd

Lehnert

Andreotti

Degering³

et al. 2016

J. Phys. G: Nucl. Part. Phys.

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Abstract. A search for double beta decays of110 Pd and 102 Pd into excited states of the daughter nuclides has been performed using three ultra-low background gammaspectrometry measurements in the Felsenkeller laboratory, Germany, the HADES laboratory, Belgium and at the LNGS, Italy. The combined Bayesian analysis of the three measurements sets improved half-life limits for the 2νββ and 0νββ decay modes of the 2 + 1 , 0

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A new low-level γ-ray spectrometry system for environmental radioactivity at the underground laboratory Felsenkeller

Cited by 63 publications

References 13 publications

Felsenkeller shallow-underground accelerator laboratory for nuclear astrophysics

Felsenkeller shallow-underground accelerator laboratory for nuclear astrophysics

Monte Carlo Simulation of a HP-Ge Pulse Height Spectrum over the Entire Energy Range

Double beta decays into excited states in ¹¹⁰Pd and ¹⁰²Pd

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A new low-level γ-ray spectrometry system for environmental radioactivity at the underground laboratory Felsenkeller

Cited by 63 publications

References 13 publications

Felsenkeller shallow-underground accelerator laboratory for nuclear astrophysics

Felsenkeller shallow-underground accelerator laboratory for nuclear astrophysics

Monte Carlo Simulation of a HP-Ge Pulse Height Spectrum over the Entire Energy Range

Double beta decays into excited states in 110Pd and 102Pd

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Double beta decays into excited states in ¹¹⁰Pd and ¹⁰²Pd