The LHCb Upgrade

International Workshop on Discovery Physics at the LHC

Piucci, Alessio^1

Physikalisches Institut, Im Neuenheimer Feld 226, Heidelberg

DE

69120, United States^1

关键词: Bunch crossings;    Centre-of-mass energies;    Detector readout;    Heavy flavours;    High-precision measurement;    LHCb upgrades;    Online selection;    Trigger efficiencies;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/878/1/012012/pdf
DOI  :  10.1088/1742-6596/878/1/012012

来源: IOP

【 摘 要 】

During the LHC Run 1 the LHCb experiment has successfully performed a large number of high precision measurements in heavy flavour physics using 3 fb-1of data collected at centre-of-mass energies of 7 TeV and 8 TeV. In LHC Run 2 the LHCb is expected to integrate an additional 5 fb-1data, however many of the measurements will remain limited by statistics. For this reason LHCb will undergo in 2020 a major upgrade during the Long Shutdown 2 of LHC, with the aim to collect 50 fb-1of data by 2028. To achieve this goal the LHCb detector readout rate will be upgraded from the current 1 MHz to the LHC bunch crossing rate of 40 MHz. The luminosity delivered to the experiment will increase by a factor five, up to 2 ⋅ 1033cm-2s-1. The online selection of events will be uniquely performed by a pure software trigger, improving the trigger efficiencies. In order to sustain the increased luminosity and readout rate, all the sub-detectors will be upgraded. The architecture of the upgraded DAQ system and trigger strategy will be presented, as well an overview of the sub-detector upgrades.