Energy measurement with the SDHCAL prototype

TL;DR

The SDHCAL prototype demonstrates effective particle separation and precise energy measurement in hadronic calorimetry, with a new calibration method addressing detector response degradation during high-rate beam exposure.

Contribution

Introduction of a calibration method that compensates for GRPC response degradation in high-rate conditions for the SDHCAL prototype.

Findings

Effective pion-electron separation achieved

High resolution in hadronic energy measurement

Calibration method improves response stability

Abstract

The SDHCAL prototype that was completed in 2012 was exposed to beams of pions, electrons of different energies at the SPS of CERN for a total time period of 5 weeks. The data are being analyzed within the CALICE Collaboration. However preliminary results indicate that a highly granular hadronic calorimeter conceived for PFA application is also a powerful tool to separate pions from electrons. The SDHCAL provides also a very good resolution of hadronic showers energy measurement. A new calibration method that takes into account the degradation of the Glass Resistive Plate Chambers (GRPC) response for runs with rather high particle beam rate is presented.