The T-SDHCAL Hadronic Calorimeter for a Future Higgs factory

TL;DR

This paper discusses the development and testing of a new RPC-based hadronic calorimeter prototype with enhanced timing capabilities for future lepton collider experiments, aiming to improve shower reconstruction and particle flow algorithms.

Contribution

It introduces a novel multi-gap resistive plate chamber design with improved efficiency and timing, tailored for future Higgs factory detectors.

Findings

Prototype achieves high efficiency in initial tests

Timing performance under evaluation with PETIROC ASIC

Progress made in detector construction and characterization

Abstract

The CALICE technological RPC-based SDHCAL prototype that fullfils all the requirements of compactness, hermeticity and power budget of the future lepton accelerator experiments, has been extensively tested and has provided excellent results in terms of the energy resolution and shower separation. A new phase of R&D to validate completely the SDHCAL option for the International Linear Detector (ILD) project of the ILC and also the Circular Electron Positron Collider (CEPC and FCCee) has started with the conception and the realization of new prototypes. The new prototype proposes to exploit the excellent time resolution that can be provided by multi-gap resistive plate chamber detectors in order to better build the hadronic showers with the aim to separate close-by ones and also to single out the contribution of delayed neutrons with the purpose to improve on the Particle Flow Algorithm performances and better reconstruct the showers energy. A new technique to build multi-gap resistive plate chambers has been developed and first results confirm the excellent efficiency of the new detectors. The timing performance is under study using the PETIROC ASIC developed by the OMEGA group. The progress realized on the different aspects of the new concept will be presented and the future steps will be discussed.