Author:
Chen Jiahui,Li Huiling,Li Yiyue,Liu Pingcheng
Abstract
Abstract
Muon scattering tomography (MST) is a non-destructive
technique to image various materials by utilizing cosmic ray muons
as probes. A typical MST system with a two-fold track detectors is
particularly effective in detecting high-Z materials (e.g. nuclear materials), but difficult to recognize low-Z materials
(e.g. explosive materials). In this work, we present a concept of
MST system to discriminate both low-Z and high-Z materials by
extra measuring momentum of low-energy muons with a Cherenkov
detector. A toy Monte Carlo simulation to describe detector
responses and multiple scatterings of a muon tracking through
materials is developed for statistical tests. Based on
momentum-dependent track reconstruction and image reconstruction
algorithm, we evaluate separation powers of different materials in
the system. The results show that momentum measurement of low-energy
muons and accurate track reconstruction can improve separation power
of low-Z materials significantly. This may enable the MST system
to detect both low-Z and high-Z materials with cosmic ray muons
in the whole energy range.
Subject
Mathematical Physics,Instrumentation
Cited by
1 articles.
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