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Performance of the upgraded preprocessor of the ATLAS Level-1 calorimeter trigger

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    0537666 - FZÚ 2021 RIV GB eng J - Journal Article
    Aad, G. - Abbott, B. - Abbott, D.C. - Chudoba, Jiří - Hejbal, Jiří - Hladík, Ondřej - Jačka, Petr - Jakoubek, Tomáš - Kepka, Oldřich - Kroll, Jiří - Kupčo, Alexander - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek … Total 2897 authors
    Performance of the upgraded preprocessor of the ATLAS Level-1 calorimeter trigger.
    Journal of Instrumentation. Roč. 15, č. 11 (2020), s. 1-48, č. článku P11016. ISSN 1748-0221. E-ISSN 1748-0221
    R&D Projects: GA MŠk(CZ) LM2018104; GA MŠk(CZ) LTT17018
    Institutional support: RVO:68378271
    Keywords : ATLAS * CERN * LHC * calorimeters * FPGA * trigger
    OECD category: Particles and field physics
    Impact factor: 1.415, year: 2020
    Method of publishing: Open access

    The PreProcessor of the ATLAS Level-1 Calorimeter Trigger prepares the analogue trigger signals sent from the ATLAS calorimeters by digitising, synchronising, and calibrating them to reconstruct transverse energy deposits, which are then used in further processing to identify event features. During the first long shutdown of the LHC from 2013 to 2014, the central components of the PreProcessor, the Multichip Modules, were replaced by upgraded versions that feature modern ADC and FPGA technology to ensure optimal performance in the high pile-up environment of LHC Run 2. This paper describes the features of the new Multichip Modules along with the improvements to the signal processing achieved.

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