AHCAL Energy Resolution

TL;DR

This paper presents the calibration and software compensation techniques for a highly granular hadronic calorimeter prototype, aiming to enhance energy resolution for future Linear Collider detectors.

Contribution

It introduces two novel software compensation methods based on reconstructed clusters, developed with simulations and applied to test beam data.

Findings

Improved energy resolution through software compensation

Effective calibration procedure for the calorimeter

Validation of methods with test beam data

Abstract

The CALICE collaboration has constructed highly granular hadronic and electromagnetic calorimeter prototypes to evaluate technologies for the use in detector systems at a future Linear Collider. The hadron calorimeter uses 7608 small scintillator cells individually read out with silicon photomultipliers. This high granularity opens up the possibility for precise three dimensional shower reconstruction and for software compensation techniques to improve the energy resolution of the detector. We discuss the calibration procedure for the analog hadronic calorimeter and present two software compensation methods based on reconstructed clusters, which were developed with simulations and are applied to hadronic test beam data.