TIME-TRACK COMPLEMENTARITY IN THE STUDY OF EAS LONGITUDINAL DEVELOPMENT

Extensive air shower (EAS) muon production and propagation through the atmosphere were simulated. The incidence angles and arrival time at the observation level were determined for each muon. It is shown that for large distances from EAS cores and for GeV-muons, time and track measurements could be used complementarily to improve the accuracy of the muon production height determination. For TTC detectors of 5 GeV muons attached to EAS arrays at mountains and placed at a distance of about 200-250 m from its centre, the accuracy of the muon production depth estimate is about 35 g CM-2. The influence of the detector location, the muon energy threshold, the observation level and experimental errors is analysed.