# Hadron detection with a dual-readout fiber calorimeter

## TL;DR

This paper presents measurements of a dual-readout fiber calorimeter's response to various particles, demonstrating its ability to accurately reconstruct particle energies with high resolution across a wide energy range.

## Contribution

It introduces a fiber-based dual-readout calorimeter with lead absorber, analyzing its response and energy resolution for pions, protons, and jets, and compares different energy measurement methods.

## Key findings

- Calorimeter accurately reconstructs particle energies within a few percent.
- Energy resolution scales as 30%/sqrt(E) without additional terms.
- Leakage counters influence on calorimeter performance is studied.

## Abstract

In this paper, we describe measurements of the response functions of a fiber-based dual- readout calorimeter for pions, protons and multiparticle "jets" with energies in the range from 10 to 180 GeV. The calorimeter uses lead as absorber material and has a total mass of 1350 kg. It is complemented by leakage counters made of scintillating plastic, with a total mass of 500 kg. The effects of these leakage counters on the calorimeter performance are studied as well. In a separate section, we investigate and compare different methods to measure the energy resolution of a calorimeter. Using only the signals provided by the calorimeter, we demonstrate that our dual-readout calorimeter, calibrated with electrons, is able to reconstruct the energy of proton and pion beam particles to within a few percent at all energies. The fractional widths of the signal distributions for these particles (sigma/E) scale with the beam energy as 30%/sqrt(E), without any additional contributing terms.