The muon intensity in the Felsenkeller shallow underground laboratory
arXiv:1904.11501 · doi:10.1016/j.astropartphys.2019.04.006
Abstract
The muon intensity and angular distribution in the shallow-underground laboratory Felsenkeller in Dresden, Germany have been studied using a portable muon detector based on the close cathode chamber design. Data has been taken at four positions in Felsenkeller tunnels VIII and IX, where a new 5 MV underground ion accelerator is being installed, and in addition at four positions in Felsenkeller tunnel IV, which hosts a low-radioactivity counting facility. At each of the eight positions studied, seven different orientations of the detector were used to compile a map of the upper hemisphere with 0.85° angular resolution. The muon intensity is found to be suppressed by a factor of 40 due to the 45 m thick rock overburden, corresponding to 140 meters water equivalent. The angular data are matched by two different simulations taking into account the known geodetic features of the terrain: First, simply by determining the cutoff energy using the projected slant depth in rock and the known muon energy spectrum, and second, in a Geant4 simulation propagating the muons through a column of rock equal to the known slant depth. The present data are instrumental for studying muon-induced effects at these depths and also in the planning of an active veto for accelerator-based underground nuclear astrophysics experiments.
arXiv commentSubmitted to Astroparticle Physics
References in corpus (14)
- Dark Matter Search Results from a One TonneYear Exposure of XENON1T
- Discovery of a big void in Khufu's Pyramid by observation of cosmic-ray muons
- Solar neutrino results in Super-Kamiokande-III
- Low Energy Threshold Analysis of the Phase I and Phase II Data Sets of the Sudbury Neutrino Observatory
- The Large Enriched Germanium Experiment for Neutrinoless Double Beta Decay (LEGEND)
- Muon simulation codes MUSIC and MUSUN for underground physics
- Muon Simulations for Super-Kamiokande, KamLAND and CHOOZ
- LUNA: Status and Prospects
- Cosmic Ray Radiography of the Damaged Cores of the Fukushima Reactors
- Cosmic-muon characterization and annual modulation measurement with Double Chooz detectors
- Simulation of muon radiography for monitoring CO stored in a geological reservoir
- Cosmic-ray induced background intercomparison with actively shielded HPGe detectors at underground locations
- Direct measurement of neutrons induced in lead by cosmic muons at a shallow underground site
- Deriving the solar activity cycle modulation on cosmic ray intensity observed by Nagoya muon detector from October 1970 until December 2012
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- The Felsenkeller shallow-underground laboratory for nuclear astrophysics
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- Underground nuclear astrophysics: Status and recent results from Felsenkeller laboratory