Performance of the ALICE Electromagnetic Calorimeter

TL;DR

This paper details the design, calibration, and performance evaluation of the ALICE electromagnetic calorimeter during 2010-2018, demonstrating its capabilities in reconstructing various particles in high-energy collisions.

Contribution

It provides a comprehensive analysis of the calorimeter's performance, calibration procedures, and particle reconstruction capabilities based on extensive test beam and collision data.

Findings

Calorimeter accurately reconstructs photons, electrons, and jets.

Calibration procedures ensure precise energy measurements.

Performance aligns well with simulation predictions.

Abstract

The performance of the electromagnetic calorimeter of the ALICE experiment during operation in 2010-2018 at the Large Hadron Collider is presented. After a short introduction into the design, readout, and trigger capabilities of the detector, the procedures for data taking, reconstruction, and validation are explained. The methods used for the calibration and various derived corrections are presented in detail. Subsequently, the capabilities of the calorimeter to reconstruct and measure photons, light mesons, electrons and jets are discussed. The performance of the calorimeter is illustrated mainly with data obtained with test beams at the Proton Synchrotron and Super Proton Synchrotron or in proton-proton collisions at $\sqrt{s}=13$ TeV, and compared to simulations.