Dual-readout calorimetry with homogeneous crystals

TL;DR

This paper demonstrates the feasibility of dual-readout calorimetry using homogeneous crystals like PbWO4 and BGO, achieving high-resolution energy measurements for electromagnetic and hadronic signals through simultaneous collection of Cerenkov and scintillation signals.

Contribution

It provides experimental evidence that homogeneous scintillating crystals can support dual-readout techniques, expanding calorimetry options beyond traditional fiber-based methods.

Findings

Successful collection of Cerenkov and scintillation signals in PbWO4 and BGO crystals.

Proof-of-principle demonstration of Cerenkov signal identification in homogeneous crystals.

Potential for high-resolution calorimetry using dual-readout in homogeneous crystal detectors.

Abstract

High resolution calorimetry with state-of-the-art energy resolution performance for both electromagnetic (EM) and hadronic signals can be achieved using the dual-readout (DR) technique, both in a homogeneous scintillating-crystal calorimeter and in a traditional fiber and absorber-based DR hadronic section. We present results from the CalVision consortium studying the collection of Cerenkov and scintillation signals in PbWO$_4$ and BGO crystal samples exposed to 120\,GeV proton beams at the Fermilab Test Beam Facility, including proof-of-principle measurements aimed at demonstrating the identification of a sufficiently large Cerenkov signal in homogeneous scintillating crystals to support dual-readout capability.