Figure 7
From: Radiography using cosmic-ray electromagnetic showers and its application in hydrology
Setup of the two-step simulations and simulated effects of atmospheric pressure and water vapour pressure. (a) Schematic illustration of the simulation of cosmic-ray development in the atmosphere by COSMOSX simulator. (b) Schematic illustration of the simulation of the water pool and the detector response using Geant4 simulator. (c) Energy spectra of primary protons and helium nuclei taken from AMS-2 experiment. In COSMOSX simulation, protons and helium nuclei are injected following these spectra. (d) Energy spectra of secondary muons and electrons sampled at the sensitive layer at 50 m altitude in COSMOSX simulator (1005 hPa). The results are compared with literature values by Refs.57,58. (e) Simulated count rate depending on the atmospheric pressure (Colour representing different water levels in the tank). (f) Simulated count rate depending on the water vapour pressure.
