Mceq.Projects

Abstract

When the primary cosmic rays enter Earth’s atmosphere and interact whit the air nuclei, they produce several amounts of the secondary particles. Some of these particles are not absorbed in the atmosphere, such as muons and neutrinos. This way, from the spectra of each secondary particle, we can obtain information about the primary cosmic rays and their physical interactions through the atmosphere. In the present work, we solve the coupled Cascade equations numerically with MCEq code. The presented approach is very flexible and allows the use of different hadronic interaction models, realistic parametrizations of the primary cosmic-ray flux and the Earth’s atmosphere, and a detailed treatment of particle interactions and decays. Finally, we study in detail the seasonal variation of atmospheric muons at very high energy.