ИСТИНА

In the laboratory of cosmic rays of the Polar Geophysical Institute, in early 2020, a muon telescope (MT) was created and put into operation. It was designed to register ionizing particles in the energy range from 10 MeV to 100 GeV. The telescope is assembled according to a standard scheme: two scintillator panels separated by a 10 cm layer of pure lead. The electronic circuit has output channels for counting the upper and lower detectors, as well as a coincidence channel between them (telescope). The device is included in the secondary cosmic ray monitoring system in Apatity. Analysis of the data obtained during the operation of the device showed variations in the muon flux. Basically, these variations are associated with processes in the atmosphere. Solar activity in 2020 was at a minimum; significant variations in cosmic rays, as shown by neutron monitor data, were absent during this period. The telescope data will be used to verify numerical models of the propagation of cosmic rays in the atmosphere by comparing the calculated flux of charged particles at ground level and the actually observed one.