Kovtun V. The CDF II (FNAL) and the ATLAS (CERN) muon detecting system.

The thesis is devoted to solving the problem of increasing the top-quark experimental data on the CDF II and ATLAS, and the investigation of the muon detection systems. The CDF II acceptance is increased due to the system of muon counters of the new generation. Precision investigations of the detector parameters were carried out using a new method calibration ph.e. and the real model of the FEU/SiPM. It has been shown experimentally (at SPS) the possibility of recording muons in HCAL (ATLAS) and using of such muons in the top-quark trigger. At the first time the muon losses in the energy range 1-150 GeV have been experimentally measured. A program for studying the radiation resistance of scintillators and various designs of muon detectors for colliders SSC, Tevatron, LHC, ILC was carried out.