The effect of radiation damage on the light yield and uniformity of candidate plastic scintillator tiles for the CMS hadron calorimeter upgrade
Journal of Instrumentation, vol.20, no.1, 2025 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 20 Issue: 1
- Publication Date: 2025
- Doi Number: 10.1088/1748-0221/20/01/p01026
- Journal Name: Journal of Instrumentation
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, Index Islamicus, INSPEC
- Keywords: Calorimeter methods, Calorimeters, Interaction of radiation with matter, Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators)
- Middle East Technical University Affiliated: Yes
Abstract
A study has been performed to understand the effects of radiation damage on various plastic scintillator tiles considered for a possible upgrade of the hadron calorimeter of the CMS detector. Measurements were made with unirradiated tiles and with tiles that had been irradiated in the CMS collision hall to a dose of 44 kGy. Results are presented for the tiles of different shapes in terms of the energy spectrum, efficiency as a function of the position at which each tile was hit, as well as light yield. All the tiles showed a light reduction of up to about 50%. The tiles with the shape currently used in the CMS detector did not see increased non-uniformity of light collection, while a significant disuniformity was observed for the tiles considered as alternatives.