TY - GEN ID - heidok12157 Y1 - 2011/// KW - Silizium-Photomultiplier KW - SiPM KW - Geant 4 KW - Particle Flow KW - International Linear ColliderSilicon Photomultiplier KW - Geant 4 KW - Monte Carlo Simulation KW - Sampling Calorimeter KW - Particle Flow TI - Hadronic Imaging Calorimetry UR - https://archiv.ub.uni-heidelberg.de/volltextserver/12157/ AV - public N2 - This thesis focuses on a prototype of a highly granular hadronic calorimeter at the planned International Linear Collider optimized for the Particle Flow Approach. The 5.3 nuclear interaction lengths deep sandwich calorimeter was built by the CALICE collaboration and consists of 38 active plastic scintillator layers. Steel is used as absorber material and the active layers are subdivided into small tiles. In total 7608 tiles are read out individually via embedded Silicon Photomultipliers (SiPM). The prototype is one of the first large scale applications of these novel and very promising miniature photodetectors. The work described in this thesis comprises the commissioning of the detector and the data acquisition with test beam particles over several months at CERN and Fermilab. The calibration of the calorimeter and the analysis of the recorded data is presented. A method to correct for the temperature dependent response of the SiPM has been developed and implemented. Its successful application shows that it is possible to handle the SiPM temperature dependency in a calorimeter with a large number of channels. The high-resolution 3D image data with analogue energy information are used to study properties and composition of hadron showers at a new level of detail. The spatial shower development and the detector response are analyzed. The performance of a clustering algorithm in accessing the electromagnetic component of hadron showers is studied. Simulations with several different Geant 4 models are compared to data and the results are a valuable source of information for future improvement of the models. A1 - Kaplan, Alexander ER -