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Operation and performance of the ATLAS semiconductor tracker in LHC Run 2

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    0565743 - FZÚ 2023 RIV GB eng J - Journal Article
    Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Latoňová, Věra - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2902 authors
    Operation and performance of the ATLAS semiconductor tracker in LHC Run 2.
    Journal of Instrumentation. Roč. 17, č. 1 (2022), č. článku P01013. ISSN 1748-0221. E-ISSN 1748-0221
    R&D Projects: GA MŠMT(CZ) LM2018104
    Research Infrastructure: e-INFRA CZ - 90140
    Institutional support: RVO:68378271
    Keywords : ATLAS * performance * tracking detector
    OECD category: Particles and field physics
    Impact factor: 1.3, year: 2022
    Method of publishing: Open access

    The semiconductor tracker (SCT) is one of the tracking systems for charged particles in the ATLAS detector. It consists of 4088 silicon strip sensor modules. During Run 2 (2015–2018) the Large Hadron Collider delivered an integrated luminosity of 156 fb−1−1 to the ATLAS experiment at a centre-of-mass proton-proton collision energy of 13 TeV. The instantaneous luminosity and pile-up conditions were far in excess of those assumed in the original design of the SCT detector. Due to improvements to the data acquisition system, the SCT operated stably throughout Run 2. It was available for 99.9% of the integrated luminosity and achieved a data-quality efficiency of 99.85%. Detailed studies have been made of the leakage current in SCT modules and the evolution of the full depletion voltage, which are used to study the impact of radiation damage to the modules.
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