Study of ATLAS Hadronic Calorimeter response using muon beams

The European Organization for Nuclear Research (French: Organisation européenne pour la recherche nucléaire), known as CERN, is a European research organization that operates the largest particle physics laboratory in the world. CERN's main function is to provide the particle accelerators and other infrastructure needed for high-energy physics research. The Large Hadron Collider (LHC) is the world's largest and highest-energy particle collider and the largest machine in the world, which is situated at CERN. ATLAS experiment is located along the collider. It is planned to increase luminosity of the Large Hadron Collider (High Luminosity LHC), for this purpose was created new electronics system for ATLAS hadronic calorimeter. A module equipped with this new electronics was tested with 160 GeV energy muon beam. Recorded data was analyzed using object-oriented program and library ROOT v.6. To analyze the data, working codes were developed using C++ programming language. Aim of this work is to evaluate homogenity of the testing module of the ATLAS hadronic calorimeter using muon beams. For this purpose, muon energy response was evaluated using: 1. truncated mean value of the distribution and 2. peak value of the distribution. Homogenity of the testing module was evaluated and it was concluded that: 1. Peak value of the distribution cannot be used to characterize homogenity of the testing module, because it depends on the size of the cell. Therefore, truncated mean value was used in the analysis. 2. Homogenity of the testing module, which was equipped with new electronics designed for High Luminosity LHC, is ranging within 2.4