# A Parameterized Energy Correction Method for Electromagnetic Showers in BGO-ECAL of DAMPE

## TL;DR

This paper introduces a parameterized energy correction method for electromagnetic showers in DAMPE's BGO calorimeter, improving energy measurement accuracy by compensating for energy loss and leakage, validated through simulations and CERN test data.

## Contribution

The paper presents a novel parameterized correction technique that enhances energy measurement accuracy in space-based calorimeters, based on detailed simulations and experimental validation.

## Key findings

- Significant improvement in energy linearity and resolution.
- Effective correction of energy loss and leakage effects.
- Validated method with CERN electron beam data.

## Abstract

DAMPE is a space-based mission designed as a high energy particle detector measuring cosmic-rays and $\gamma-$rays which was successfully launched on Dec.17, 2015. The BGO electromagnetic calorimeter is one of the key sub-detectors of DAMPE for energy measurement of electromagnetic showers produced by $e^{\pm}/{\gamma}$. Due to energy loss in dead material and energy leakage outside the calorimeter, the deposited energy in BGO underestimates the primary energy of incident $e^{\pm}/{\gamma}$. In this paper, based on detailed MC simulations, a parameterized energy correction method using the lateral and longitudinal information of electromagnetic showers has been studied and verified with data of electron beam test at CERN. The measurements of energy linearity and resolution are significantly improved by applying this correction method for electromagnetic showers.