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Energy difference between hodoscope sections in muon tomography: Application for nuclear waste barrels by means of GEANT4 simulations
  • Ahmet Ilker Topuz,
  • Madis Kiisk,
  • Andrea Giammanco
Ahmet Ilker Topuz
University of Tartu

Corresponding Author:[email protected]

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Madis Kiisk
University of Tartu
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Andrea Giammanco
Université catholique de Louvain
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The propagating muons deposit their energies in the volume-of-interest (VOI) within the tomographic configurations, and this energy loss directly indicates that there is a difference in terms of the kinetic energy between the incoming muons and the the outgoing muons. In this study, by using the GEANT4 simulations, we first elaborate this energy difference over the nuclear waste barrels that contain cobalt, strontium, caesium, uranium, and plutonium. We show that the deposited energy through these VOIs is not negligible for the initial energy bins. Then, we suggest a correction factor for the image reconstruction codes where the initial kinetic energy of the entering muons is coarsely predicted in accordance with the deflection angle through the hodoscope sections, thereby renormalizing the deflection angle in the bottom hodoscope depending on the intrinsic properties of the corresponding VOIs. This correction factor encompasses useful information about the target volume traversed by the muons since it is related to the intrinsic features of the VOI. Therefore, it might be utilized in order to complement the scattering information as an input to the image reconstruction.