Brightness and uniformity measurements of plastic scintillator tiles at the CERN H2 test beam

TL;DR

This study evaluates various plastic scintillator tiles' light output, collection efficiency, and timing at CERN's H2 test beam, focusing on innovative over-doped and green-emitting options for CMS calorimeter upgrade.

Contribution

It provides new experimental data on over-doped and green-emitting plastic scintillators, which have not been extensively studied before, for high-energy physics applications.

Findings

Green-emitting scintillators show comparable light output to blue ones.

Over-doped scintillators exhibit improved timing properties.

Hit efficiency varies with position and scintillator type.

Abstract

We study the light output, light collection efficiency and signal timing of a variety of organic scintillators that are being considered for the upgrade of the hadronic calorimeter of the CMS detector. The experimental data are collected at the H2 test-beam area at CERN, using a 150 GeV muon beam. In particular, we investigate the usage of over-doped and green-emitting plastic scintillator, two solutions that have not been extensively considered. We present a study of the energy distribution in plastic-scintillator tiles, the hit efficiency as a function of the hit position, and a study of the signal timing for blue and green scintillators.