Monte Carlo simulations are nowadays an essential tool in emission tomography (Single-Photon Emission Computed Tomography— SPECT and Positron Emission Tomography—PET), for assisting system design and optimizing imaging and processing protocols. Several Monte Carlo simulation software are currently available for modeling SPECT and PET configurations. This paper presents an overview of current tr...

Current Monte Carlo simulations do not provide a good description of the muon component extensive air showers. Many shower experiments report discrepancies between their data and predictions, ranging from TeV scale up to highest energies. In these proceedings, we address seasonal variation multi-muon events observed by NOvA Near Detector (ND). For our studies, use general-purpose code FLUKA tre...