Martinelli, L. (2024) Road for LHC Run III: The ATLAS New Small Wheel and the MicroMegas chambers performances. Il nuovo cimento C, 47 (3). pp. 1-5. ISSN 1826-9885
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Abstract
The two New Small Wheels (NSWs) for the upgrade of the Atlas Muon Spectrometer are now installed in the experiment and ready to collect data in LHC Run III, which started in July 2022. The NSWs are the largest phase- 1 upgrade project of ATLAS. Its challenging completion and readiness for data taking is a remarkable achievement of the Collaboration. The two wheels (10 meters in diameter) have replaced the first muon stations in the high-rapidity regions of ATLAS and are equipped with multiple layers of two new detector technologies: the small-strip Thin Gap Chambers (sTGC) and the MicroMegas (MM). The latter are used in such a large scale in HEP experiments for the first time. Each detector technology will cover more than 1200 m2 of active area. The new system is designed to assure high tracking efficiency with a precision measurement of muon tracks together with a reduction of fake trigger rates in view of the higher background environment of the Hi-Lumi LHC programme. In this presentation, the motivation of the NSWs upgrade and the steps from the commissioning to the data taking together with the first results using the Run III data will be presented, focusing on the MicroMegas performances.
| Item Type: | Article |
|---|---|
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 10 Jul 2024 16:14 |
| Last Modified: | 10 Jul 2024 16:14 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/22987 |
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