Performance of a Prototype CMS Hadron Barrel Calorimeter in a Test Beam

TL;DR

This paper evaluates a prototype CMS Hadron Barrel Calorimeter's performance in a test beam, focusing on optimizing design parameters to improve energy resolution and linearity for hadron detection.

Contribution

It presents experimental results on a prototype calorimeter, providing insights into optimal absorber depth, sampling frequency, and segmentation for improved performance.

Findings

Optimized absorber depth and segmentation for better energy resolution.

Identified effects of electromagnetic calorimeter on hadron measurement.

Demonstrated the prototype's suitability for CMS detector requirements.

Abstract

We report on the performance of a prototype CMS Hadron Barrel Calorimeter (HCAL) module in a test beam. The prototype sampling calorimeter used copper absorber plates and scintillator tiles with wavelength shifting fibers for readout. Placing a lead tungstate crystal electromagnetic calorimeter in front of HCAL affects the linearity and energy resolution of the combined system to hadrons. The data are used to optimize the choice of total absorber depth, sampling frequency, and longitudinal readout segmentation.