Mountain muon tomography using a liquid scintillator detector
Bin Zhang, Zhe Wang, Shaomin Chen

TL;DR
This paper demonstrates the feasibility of using a spherical liquid scintillator detector for muon tomography to image internal mountain structures with high resolution and density contrast, applicable to geological prospecting.
Contribution
It introduces the application of a 1.3-meter spherical liquid scintillator detector, previously used in neutrino experiments, for mountain muon tomography and geological imaging.
Findings
Can image internal mountain regions with densities ≤2.1 g/cm³ or ≥3.5 g/cm³
Achieves an angular resolution of 4.9 degrees
Effective for mountains below 1 km in height and 2.8 g/cm³ in density.
Abstract
Muon tomography (MT), based on atmospheric cosmic rays, is a promising technique suitable for nondestructive imaging of the internal structures of mountains. This method uses the measured flux distribution after attenuation, combined with the known muon angular and energy distributions and a 3D satellite map, to perform tomographic imaging of the density distribution inside a probed volume. A muon tomography station (MTS) requires direction-sensitive detectors with a high resolution for optimal tracking of incident cosmic-ray muons. The spherical liquid scintillator detector is one of the best candidates for this application due to its uniform detection efficiency for the whole solid angle and its excellent ability to distinguish muon signals from the radioactive background via the difference in the energy deposit. This type of detector, with a 1.3~m diameter, was used in the…
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Particle physics theoretical and experimental studies · Particle Detector Development and Performance
