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2016•Journal of InstrumentationOpen access

Track Finding in CMS for the Level-1 Trigger at the HL-LHC

F. Palla, M. Pesaresi, A. Ryd

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Abstract

The High Luminosity LHC (HL-LHC) will deliver luminosities of up to 5 × 10 34 Hz/cm 2 , with an average of about 140 overlapping proton-proton collisions per bunch crossing. These extreme pileup conditions place stringent requirements on the trigger system to be able to cope with the resulting event rates. A key component of the CMS upgrade for HL-LHC is a track trigger system which would identify tracks with transverse momentum above 2 GeV/c already at the first-level trigger. This paper presents the status of proposals for implementing the L1 tracking in conjunction with the planned upgrade for the silicon tracker of the CMS experiment.

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The High Luminosity LHC (HL-LHC) will deliver luminosities of up to 5 × 10 34 Hz/cm 2 , with an average of about 140 overlapping proton-proton collisions per bunch crossing. These extreme pileup conditions place stringent requirements on the trigger system to be able to cope with the resulting event rates. A key component of the CMS upgrade for HL-LHC is a track trigger system which would identify tracks with transverse momentum above 2 GeV/c already at the first-level trigger. This paper presents the status of proposals for implementing the L1 tracking in conjunction with the planned upgrade for the silicon tracker of the CMS experiment.

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Available abstract

The High Luminosity LHC (HL-LHC) will deliver luminosities of up to 5 × 10 34 Hz/cm 2 , with an average of about 140 overlapping proton-proton collisions per bunch crossing. These extreme pileup conditions place stringent requirements on the trigger system to be able to cope with the resulting event rates. A key component of the CMS upgrade for HL-LHC is a track trigger system which would identify tracks with transverse momentum above 2 GeV/c already at the first-level trigger. This paper presents the status of proposals for implementing the L1 tracking in conjunction with the planned upgrade for the silicon tracker of the CMS experiment.

Key concepts: Upgrade, Large Hadron Collider, Track (disk drive), Physics, Luminosity, Event (particle physics), Nuclear physics, Tracking (education)

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