Performance of Glass Resistive Plate Chambers for a high-granularity semi-digital calorimeter

Bedjidian, M. [Université de Lyon, Université Lyon 1, CNRS/IN2P3, IPNL, 4 Rue E. Fermi, 69622 Villeurbanne Cedex, France] Belkadhib, K. [Laboratoire Leprince-Ringuet – École polytechnique, CNRS/IN2P3, Palaiseau, F-91128 France] Boudry, V. [Laboratoire Leprince-Ringuet – École polytechnique, CNRS/IN2P3, Palaiseau, F-91128 France] Combareta, C. [Université de Lyon, Université Lyon 1, CNRS/IN2P3, IPNL, 4 Rue E. Fermi, 69622 Villeurbanne Cedex, France] Decotigny, D. [Laboratoire Leprince-Ringuet – École polytechnique, CNRS/IN2P3, Palaiseau, F-91128 France] Cortina Gil, Eduardo [UCL] Mannai, Sameh [UCL] et al.

A new design of highly granular hadronic calorimeter using Glass Resistive Plate Chambers (GRPCs) with embedded electronics has been proposed for the future International Linear Collider (ILC) experiments. It features a 2-bit threshold semi-digital read-out. Several GRPC prototypes with their electronics have been successfully built and tested in pion beams. The design of these detectors is presented along with the test results on efficiency, pad multiplicity, stability and reproducibility.