A study of energy correction for the electron beam data in the BGO ECAL of the DAMPE

TL;DR

This paper discusses methods for energy correction in DAMPE's BGO calorimeter to accurately reconstruct incident electron energies across a wide range, using simulations and beam test data.

Contribution

It introduces and evaluates specific energy correction methods tailored for different energy ranges in DAMPE's BGO calorimeter.

Findings

Effective energy correction methods were identified for various energy ranges.

Simulation and beam test data show improved energy reconstruction accuracy.

The methods enhance DAMPE's capability to measure high-energy electrons.

Abstract

The DArk Matter Particle Explorer (DAMPE) is an orbital experiment aiming at searching for dark matter indirectly by measuring the spectra of photons, electrons and positrons originating from deep space. The BGO electromagnetic calorimeter is one of the key sub-detectors of the DAMPE, which is designed for high energy measurement with a large dynamic range from 5 GeV to 10 TeV. In this paper, some methods for energy correction are discussed and tried, in order to reconstruct the primary energy of the incident electrons. Different methods are chosen for the appropriate energy ranges. The results of Geant4 simulation and beam test data (at CERN) are presented.