Fig. 6.From: A potential space- and power-effective muon sensor module for imaging a volcano(a) ○ shows the muon intensity with MAPMT, × shows the muon intensity with CWPMT, ◊ shows the intensity flux with multiplicity cut. The measured muon intensities are adjusted so that the intensities at θ = 90° correspond to that from the DEIS result (□). (b) Detection efficiency of the muon sensor with MAPMT as a function of azimuth and zenith. The detection efficiency is a convolution of those from the zenith angular dependence of cosmic-ray muons and from the geometrical structure of the detector.Back to article page