EPJ Web of Conferences (Jan 2025)

High-granularity Dual-readout Calorimeter: Evolution of a Classic Prototype

  • Akchurin Nural,
  • Cash James,
  • Damgov Jordan,
  • Delashaw Xander,
  • Lamichhane Kamal,
  • Harris Miles,
  • Kelley Mitch,
  • Kunori Shuichi,
  • Mergate-Cacace Harold,
  • Peltola Timo,
  • Schneider Odin,
  • Sewell Julian

DOI
https://doi.org/10.1051/epjconf/202532000028
Journal volume & issue
Vol. 320
p. 00028

Abstract

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The original dual-readout calorimeter prototype (DREAM), constructed two decades ago, has proven instrumental in advancing our understanding of calorimetry. It has facilitated a multitude of breakthroughs by leveraging signals from complementary media (Cherenkov and scintillation) to capture fluctuations in electro-magnetic energy fraction within hadronic showers. Over the years, extensive studies have shed light on the performance characteristics of this module, rendering it exceptionally well-understood. Drawing on this wealth of experience, we have embarked on enhancing the detectors’ capabilities further by integrating fast silicon photomultipliers (SiPMs) with finer transverse segmentation, 1 cm2, as well as longitudinal segmentation by timing measuring better than 10 cm. This configuration will allow us to image hadronic showers with high granularity (HG-DREAM). We argue that the spatial information provided by such a granular detector in a short time window ( 5 ns) leads to substantial enhancement in energy resolution when advanced neural networks are employed in energy reconstruction. We briefly present the current status of work, new concepts that have been introduced to the detector, and expectations from simulations.