Dual-readout Calorimetry with Scintillating Crystals

The possibility of evaluating the amount of the energy released by the electromagnetic part of a hadronic shower (f) would allow to account for one of the main sources of the fluctuation of the hadronic calorimeter response. The dual-readout method allows an event-by-event measurement of f, as it was originally demonstrated with the DREAM sampling hadronic calorimeter. This approach can be extended to homogeneous detectors like crystals if Cherenkov and scintillation light can be separated by exploiting their main properties. In this paper we present several methods developed for distinguishing the two components in PWO and BGO crystal based calorimeters and the results obtained.