Calculation of the effective area of Multifunctional Detector of Muons in a wide range of zenith angles

To study the muon component of extensive air showers, a project for Multifunctional Detector of Muons is currently being developed at the National Research Nuclear University MEPhI within the Scientific and Educational Centre NEVOD. The primary goal of this setup is to analyze the muon component of extensive air showers within the zenith angle range from 0$^\circ$ to 60$^\circ$ using the method of local muon density spectra. To apply this method, it is necessary to know the effective area of the detector for all studied directions of particle arrival. This paper presents calculations for determining the effective area of multifunctional detector of muons as a function of the zenith angles of particle arrival. A program has been developed to determine the effective area of the detector by simulating the passage of particles through the composite components of the setup. The model incorporates the geometry of the detector, including the arrangement of drift chambers and steel absorbers. The effective area in the program was calculated using the Monte Carlo method.