Hadron shower decomposition in a highly granular calorimeter

16th International Conference on Calorimetry in High Energy Physics

Chadeeva, Marina^1,2

ITEP, Bolshaja Cheremushkinskaja 25, Moscow

117218, Russia^1

MEPhI, Kashirskoje sh. 31, Moscow

115409, Russia^2

关键词: Energy ranges;    Hadron showers;    Hadronic calorimeters;    Parametrisation;    Slope parameter;    Spatial development;    Test beam;    Two-component;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/587/1/012036/pdf
DOI  :  10.1088/1742-6596/587/1/012036

来源: IOP

【 摘 要 】

The spatial development of showers induced by positive hadrons with momenta 10-80 GeV in the highly granular CALICE scintillator-steel analogue hadronic calorimeter is analysed. The parametrisation of both longitudinal and radial shower profiles with the two- component functions are fit to the test beam data and simulations using the physics lists QGSP-BERT and FTFP-BERT from GEANT4 version 9.6 patch 01. The shower parameters, describing the longitudinal tail and radial halo, are in good agreement between data and simulations and are similar for pions and protons. For the longitudinal development, the most significant difference between data and simulations is in the relative containment of the separated components. For the radial development, the core slope parameter is underestimated by simulations. The physics list FTFP-BERT gives a very good description of proton showers in the studied energy range and gives better predictions of the pion shower development than QGSP-BERT.