Response evolution of the CMS ECAL and R&D studies for electromagnetic calorimetry at the High-Luminosity LHC

TL;DR

This paper reviews the current performance of the CMS ECAL, analyzes its evolution with HL-LHC conditions, and discusses R&D efforts to enhance electromagnetic calorimetry for future high-luminosity collider operations.

Contribution

It combines CMS data, beam tests, and laboratory measurements to project detector performance and explores R&D options for improved calorimetry at HL-LHC.

Findings

Projected ECAL performance at HL-LHC

Results from beam tests and laboratory measurements

Potential R&D solutions for calorimeter upgrades

Abstract

While the CMS experiment is currently harvesting LHC collision data at CERN, the performance of its electromagnetic calorimeter (ECAL) is being constantly monitored, and work has started to assess the need for changes to the detector to ensure an adequate performance for High-Luminosity LHC (HL-LHC) running, which is planned for 2022 and beyond. In this paper, results from CMS running, beam tests and laboratory measurements are combined to anticipate the detector performance evolution at the HL-LHC. Further, various R&D studies are illustrated, that will provide a useful choice for electromagnetic calorimetry at the HL-LHC.