Speaker
Description
One of the main challenges in hadron calorimetry is achieving compensation of the detector response in order to reduce fluctuations in energy reconstruction. Dual-readout calorimetry has emerged as a robust solution, exploiting the simultaneous measurement of shower development in two media with different e/h ratios. Historically, an alternative and complementary approach is boosting the detector granularity, which enables more effective integration of detector information through particle-flow–like techniques.
The HiDRa (High-Resolution Highly Granular Dual-Readout Demonstrator) approach combines these two concepts by proposing a highly granular calorimeter based on interleaved scintillating and Cherenkov fibers with a 2 mm spacing. In the central part of the detector silicon photomultipliers (SiPMs) are used to read out signals collected from bundles of eight fibers. An extensive test-beam campaign has demonstrated the robustness and scalability of the concept.
In 2025, a large-scale prototype designed for significant hadronic shower containment was tested on the CERN H8 beam line using positron, muon, and pion beams from 10 to 160 GeV. Preliminary results on the performance of this new module are presented for the first time.