De l'expérience aleph au lep à la construction du détecteur atlas auprès du lhc....This document summarizes ten years of activities in the field of experimental particle physics, which I have done just after my PhD defense in 1999. After a short introduction describing my PhD work and my activities during these ten years, the first chapter describes an analysis made in the ALEPH experiment about the measurement of the Bose-Einstein correlations in W pair decays, using an event mixing method. Nevertheless, the main part of the text is dedicated to the work I have done in the ATLAS experiment at the LHC, between the years 2000 and 2010. Four parts are distinguished. First, an analysis concerning some searches for possible supersymmetric top decays with R-parity violation is described. Then a second part is written about the test bench of the tile calorimeter front-end electronics, and its installation in the ATLAS experiment....
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