Test beam studies for a highly granular GRPC Semi-Digital HCAL

TL;DR

This paper reports on test beam studies of a highly granular semi-digital HCAL using Glass Resistive Plate Chambers with embedded electronics, demonstrating promising uniformity, low noise, and high-rate capabilities for future particle detectors.

Contribution

It introduces recent developments and experimental results of a semi-digital calorimeter prototype with embedded electronics based on Glass Resistive Plate Chambers.

Findings

Uniform spatial and angular response achieved

Low noise levels confirmed in small chambers

High-rate performance demonstrated in semi-conductive chambers

Abstract

The Particle Flow Analysis approach retained for the future ILC detectors requires high granularity and compact particle energy deposition. A Glass Resistive Plate Chamber based Semi-Digital calorimeter can offer both at a low price for the hadronic section. This paper presents some recent developments and results near test beam in the use of Glass Resistive Plate Chamber with embedded front-end electronics to build a prototype based on this principle. All the critical parameters such as the spatial and angular uniformity of the response as well as the noise level have been measured on small chambers and found to be appropriate. Small semi-conductive chambers allowing for high rates and a large chamber have also been tested.