Hadronic Shower Development in Iron-Scintillator Tile Calorimetry

TL;DR

This study investigates the development of hadronic showers in an iron-scintillator tile calorimeter, providing detailed profiles and a 3D parametrization to improve understanding and simulation of calorimeter performance.

Contribution

It introduces a detailed 3D hadronic shower parametrization and analyzes shower profiles in a novel calorimeter configuration, enhancing simulation accuracy.

Findings

Detailed transverse and longitudinal shower profiles obtained

Radial energy densities reconstructed for multiple depth segments

A new 3D shower parametrization developed

Abstract

The lateral and longitudinal profiles of hadronic showers detected by a prototype of the ATLAS Iron-Scintillator Tile Hadron Calorimeter have been investigated. This calorimeter uses a unique longitudinal configuration of scintillator tiles. Using a fine-grained pion beam scan at 100 GeV, a detailed picture of transverse shower behavior is obtained. The underlying radial energy densities for four depth segments and for the entire calorimeter have been reconstructed. A three-dimensional hadronic shower parametrization has been developed. The results presented here are useful for understanding the performance of iron-scintillator calorimeters, for developing fast simulations of hadronic showers, for many calorimetry problems requiring the integration of a shower energy deposition in a volume and for future calorimeter design.