Speaker
Description
Experiments at proposed future Higgs factories, such as the FCC-ee and the Muon Collider, will require excellent energy resolution to discriminate hadronic decays of W/Z and Higgs bosons effectively. To meet this target, calorimeters must feature a high granularity readout, essential for Particle Flow reconstruction. We present progress on the development of a hadronic calorimeter (HCAL) read out by resistive micro-pattern gaseous detectors (MPGDs). Resistive MPGDs have shown promising performance for the high-rate environment of future colliders thanks to their excellent space resolution (of the order of 100 µm), rate capability (up to tens of MHz/mm2) and longevity (up to integrated charges of 8 C/cm2) and good time resolution of the order of a few ns.
A MPGD-HCAL prototype cell of 1 radiation length made of 12 readout layers between µ-RWELLs and resistive MicroMegas has been assembled and tested. We describe the performance of the readout detectors - of transversal size 20x20 cm2 and 50x50 cm2 - measured in test beam at CERN SPS with high-energy muons, focusing on their efficiency, space resolution and response uniformity. We also present the energy response of the MPGD-HCAL prototype measured with low-energy pions (up to 10 GeV) at the CERN PS; additionally, we show the preliminary results of a joint test of the prototype together with a semi-homogeneous electromagnetic calorimeter to evaluate the energy response of the integrated system of the two detectors. The results are compared with a Geant4 simulation of the tested detector as well as a simulated full-scale prototype to compare their shower containment, response linearity and energy resolution. The evaluation of different readout electronics solutions is discussed, focusing on the performance achievable with analog, digital and semi-digital readout and the integration of the present prototype with the VMM3a-SRS front-end.
| Name of the speaker | Antonello Pellecchia |
|---|---|
| Eligible for the Georges Charpak Young Scientist Award. | yes |