Study of muon tomographic imaging for high-Z material detection with a Micromegas-based tracking system

To study the cosmic ray muon tomographic imaging of high-Z material with Micromegas-based tracking system. A high-spatial-resolution tracking system was set up with the micro-mesh gaseous structure (Micromegas) detectors in order to study the muon tomographic imaging technique. Six layers of 90 mm × 90 mm one-dimensional readout Micromegas were used to construct a tracking system. The imaging test using some metallic bars was performed with cosmic ray muons. A two-dimensional imaging of the test object was presented with a newly proposed ratio algorithm. The result of this work shows that the ratio algorithm is well performed.