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Level-1 jets and energy sums trigger performance with full 2017 dataset

After the first long shutdown, the LHC restarted at a centre-of-mass energy of 13 TeV. In 2017, the LHC achieved an instantaneous luminosity of $2\times10^{34}cm^{-2}s^{-1}$ with an average peak number of pile-up interactions of over 50. The CMS Level-1 trigger architecture has undergone a full upgr...

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Detalles Bibliográficos
Autor principal: CMS Collaboration
Lenguaje:eng
Publicado: 2018
Materias:
Acceso en línea:http://cds.cern.ch/record/2305545
Descripción
Sumario:After the first long shutdown, the LHC restarted at a centre-of-mass energy of 13 TeV. In 2017, the LHC achieved an instantaneous luminosity of $2\times10^{34}cm^{-2}s^{-1}$ with an average peak number of pile-up interactions of over 50. The CMS Level-1 trigger architecture has undergone a full upgrade in order to maintain and improve the trigger performance under these new conditions. It has allowed CMS to keep the trigger rate under control in high pileup conditions, and to avoid a significant increase in trigger thresholds that would have a negative impact on the CMS physics programme. This note includes studies of the performance of the Level-1 jets and energy sums algorithms as defined in the calorimeter trigger upgrade TDR.