Feb 21 – 25, 2022
Vienna University of Technology
Europe/Vienna timezone

Pixelated Resistive Micromegas for High-Rate Environment

Not scheduled
20m
Vienna University of Technology

Vienna University of Technology

Gusshausstraße 27-29, 1040 Wien
Recorded Presentation Gaseous Detectors

Speaker

Mariagrazia Alviggi (Universita e sezione INFN di Napoli (IT))

Description

Driven by future upgrades of existing experiments at high-luminosity LHC and for applications at future accelerators, we are developing the Micromegas (MM) technology to increase its rate capability and reach a stable and efficient operation up to particle fluxes of 10 MHz/cm2, three order of magnitudes higher than current applications.
The miniaturization of the readout elements and the optimization of the spark protection system, as well as the stability and robustness under operation, are the primary challenges of the project.
Several MM detectors have been built with pixelised, high-granularity readout plane, with 1x3 mm2 pads, implementing different resistive protection schemes, consisting on a pad-patterned structure or uniform DLC layers. Different production techniques have been pursued, and different values of resistivity used and compared.
Thorough characterization studies have been carried out on all the detectors, aiming at optimizing the layout for improved rate capability, performance, and stability. Results will be reported, with their dependence on the gas mixture and operating conditions. Preliminary results will be shown also from recent tests carried out with high energy muon beams at the Gamma Irradiation Facility (GIF++) at CERN, for studies of precision tracking under different conditions of background irradiation.

Primary experiment rd51

Primary authors

Camilla Di Donato (Universita e sezione INFN di Napoli (IT)) Givi Sekhniaidze (Universita e sezione INFN di Napoli (IT)) Marco Sessa (Universita e INFN Roma Tre (IT)) Mariagrazia Alviggi (Naples University and INFN) Maria Teresa Camerlingo (Universita e INFN Roma Tre (IT)) Valerio D'Amico (Università e INFN Roma Tre (IT)) Massimo Della Pietra (Universita e sezione INFN 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))

Presentation materials