Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/10416
Title: Reconstruction of signal amplitudes in the CMS electromagnetic calorimeter in the presence of overlapping proton-proton interactions
Authors: Karapınar, Güler
CMS Collaboration
Keywords: Large detector-systems performance
Pattern recognition, cluster finding, calibration and fitting methods
Issue Date: 2020
Publisher: IOP Publishing Ltd.
Abstract: A template fitting technique for reconstructing the amplitude of signals produced by the lead tungstate crystals of the CMS electromagnetic calorimeter is described. This novel approach is designed to suppress the contribution to the signal of the increased number of out-of-time interactions per beam crossing following the reduction of the accelerator bunch spacing from 50 to 25 ns at the start of Run 2 of the LHC. Execution of the algorithm is sufficiently fast for it to be employed in the CMS high-level trigger. It is also used in the offline event reconstruction. Results obtained from simulations and from Run 2 collision data (2015-2018) demonstrate a substantial improvement in the energy resolution of the calorimeter over a range of energies extending from a few GeV to several tens of GeV.
URI: https://doi.org/10.1088/1748-0221/15/10/P10002
https://hdl.handle.net/10416
ISSN: 1748-0221
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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