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High granularity resistive Micromegas for future detectors

4 Sept 2023, 15:30
20m
St Catherine's Bernard Sunley Building (Oxford)

St Catherine's Bernard Sunley Building

Oxford

Talk Gas-based Detection Methods Gas Based Detectors

Speaker

Michela Biglietti (INFN Roma Tre)

Description

The resistive Micromegas technology can stably operate up to O(10 MHz/cm$^{2}$) particle rate thanks to novel resistive spark-protection structures suitable for readout pads of a few mm$^{2}$ area. These structures are made by Diamond-Like-Carbon (DLC) in a double-layer configuration in most of the investigated detectors with active surfaces of $\sim 25\, \text{cm}^{2}$ and in the new one with an active area of $\sim 400 \,\text{cm}^{2}$. Specifically, the DLC foils have a surface resistivity of $\sim 30 \, \text{M}\Omega/\square$ in the last prototype. The results of the performance in terms of gain, rate capability, robustness, dependence on the irradiated area, and space-time dedicated studies will be presented. With the proven high performance of the medium size detector and the already-started construction of a high granularity resistive Micromegas with an even larger area, our R&D is reaching the goal of establishing the technology for future large-scale and high-rate employment in Particle Physics and other fields.

Your name Maria Teresa Camerlingo
Institute INFN Napoli Section
Email address maria.teresa.camerlingo@cern.ch

Authors

Maria Teresa Camerlingo (Universita Federico II e INFN Sezione di Napoli (IT)) Michela Biglietti (INFN Roma Tre)

Co-authors

Mariagrazia Alviggi (Universita di Napoli Federico II (IT)) Massimo Della Pietra (Universita Federico II e INFN Sezione di Napoli (IT)) Camilla Di Donato (Universita Federico II e INFN Sezione di Napoli (IT)) Riccardo De Asmundis (Universita Federico II e INFN Sezione di Napoli (IT)) Roberto Di Nardo (Università e INFN Roma Tre (IT)) Paolo Iengo (CERN) Mauro Iodice (INFN - Sezione di Roma Tre) Fabrizio Petrucci (Universita e INFN Roma Tre (IT)) Givi Sekhniaidze (Universita Federico II e INFN Sezione di Napoli (IT)) Marco Sessa (INFN e Universita Roma Tor Vergata (IT))

Presentation materials