Performance of dual-readout calorimeters for various absorbers

Abstract

Over the past two and a half decades, the dual-readout calorimeter has demonstrated excellent performance for both electromagnetic and hadronic particles, as evidenced by test beam results, and thus it is a candidate for future lepton collider experiments such as FCC-ee and CEPC. In discussions regarding calorimeters for future experiments, various types of absorbers have been proposed. In this paper, we investigated the performance of dual-readout calorimeters employing Fe, Brass, Cu, Pb, and W as absorber materials, using GEANT4 simulations. The performance of the calorimeters was studied in terms of energy resolutions for electromagnetic and hadronic particles, the characteristics of particle showers in different materials, time resolution, and different responses of the scintillation and Cherenkov signals. Based on these studies, this paper provides detailed insights into the development of particle showers within these different absorbers and presents predictions for the corresponding calorimeter performance.