The ATLAS muon Micromegas R&D project: towards large-size chambers for the s-LHC

Abstract

The ATLAS muon Micromegas R&D project: towards large-size chambers for the s-LHC ABSTRACT: Detectors based on the bulk-Micromegas technology exhibit position resolution better than 100 µm at counting rates of up to several tens of kHz/cm 2 , along with trigger capabilities. These characteristics, combined with the detector's mechanical robustness and the possibility for cost-effective industrial production, makes them a promising candidate for the ATLAS Muon Spectrometer upgrade in a future luminosity enhancement of the LHC. The R&D project status will be presented together with the obtained results in the effort to define the baseline system specifications.

Study of the VMM1 read-out chip in a neutron irradiation environment

“…Part of the Phase-I upgrade [1] of the ATLAS experiment is the replacement of the existing Small Wheels in the end-cap region of the Inner Detector with the New Small Wheel (NSW) in order to maintain a high performance of the muon tracking chambers as well as acceptable Level-1 trigger muon fake rates at a high luminosity environment (L = 2 × 10 34 cm −2 s −1 in Run III and later on L = 5 × 10 34 cm −2 s −1 in Run IV). The NSW will feature two chamber technologies, one focusing on the Level-1 trigger function (small thin gap chambers-sTGC) and one dedicated to precision tracking, where the MicroMEGAS detectors will be integrated [1][2][3][4].…”

Signal characteristics of a resistive-strip micromegas detector with an integrated two-dimensional readout

“…Since its invention in 1996 [1], the technology of Micromegas detectors has been under constant development [2]. In recent years, Micropattern gaseous detectors received significant attention in the development of precision and costeffective large-scale tracking detectors fo high-energy physics experiments [3], [4]. The first Micromegas detectors with a two-dimensional readout structure integrated within one PCB board and a resistive strip layer, have been developed within the RD51 [5] and MAMMA (Muon ATLAS Micromegas Activity) collaborations [6].…”