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Geoscientific Instrumentation, Methods and Data Systems An interactive open-access journal of the European Geosciences Union
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Volume 1, issue 2
Geosci. Instrum. Method. Data Syst., 1, 235–238, 2012
https://doi.org/10.5194/gi-1-235-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: High energy geophysics: muon and neutrino radiography

Geosci. Instrum. Method. Data Syst., 1, 235–238, 2012
https://doi.org/10.5194/gi-1-235-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.

  19 Dec 2012

19 Dec 2012

A novel technique to detect special nuclear material using cosmic rays

C. Thomay1, P. Baesso1, D. Cussans1, J. Davies1, P. Glaysher1, S. Quillin2, S. Robertson2, C. Steer2, C. Vassallo1, and J. Velthuis1 C. Thomay et al.
  • 1University of Bristol, Department of Particle Physics H H Wills Physics Laboratory, Tyndall Avenue, BS8 B1TL Bristol, UK
  • 2AWE, Aldermaston, RG7 4PR Reading, UK

Abstract. Resistive plate chambers (RPCs) are widely used in high energy physics for both tracking and triggering purposes, due to their excellent time resolution, rate capability, and good spatial resolution. RPCs can be produced cost-effectively on large scales, are of rugged build, and have excellent detection efficiency for charged particles. Our group has successfully built a muon scattering tomography (MST) prototype, using 12 RPCs to obtain tracking information of muons going through a target volume of ∼ 50 cm × 50 cm × 70 cm, reconstructing both the incoming and outgoing muon tracks. The required spatial granularity is achieved by using 330 readout strips per RPC with 1.5 mm pitch. The RPCs have shown an efficiency above 99% and an estimated intrinsic resolution below 1.1 mm. Due to these qualities, RPCs serve as excellent candidates for usage in volcano radiography.

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