Non-linear energy calibration of CMS calorimeters for single pions

TL;DR

This paper presents a non-linear calibration method for CMS calorimeters that improves energy resolution and linearity across a wide energy range for single pions.

Contribution

It introduces a non-linear calibration technique that enhances calorimeter performance beyond standard linear methods.

Findings

Non-linear calibration improves energy resolution.

Restores calorimeter linearity across energies.

Effective for energies from 10 GeV to 3 TeV.

Abstract

CMS calorimeter energy calibration was done in the full CMS simulated geometry for the pseudorapidity region eta = 0. The samples of single pion events were generated with a set of incident energies from 10 GeV to 3 TeV. The analysis of the simulated data shows that standard calibration using just sampling coefficients for calorimeter parts with different sampling ratio gives nonlinear calorimeter response. Non-linear calibration technique was applied for improving calorimeter energy resolution and restoring the calorimeter linearity.