A time-multiplexed track-trigger for the CMS HL-LHC upgrade

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Title: A time-multiplexed track-trigger for the CMS HL-LHC upgrade
Authors: Hall, G
CMS TMTT team
Item Type: Journal Article
Abstract: A new CMS Tracker is under development for operation at the High Luminosity LHC from 2025. It includes an outer tracker based on special modules of two different types which will construct track stubs using spatially coincident clusters in two closely spaced sensor layers, to reject low transverse momentum track hits and reduce the data volume before data transmission to the Level-1 trigger. The tracker data will be used to reconstruct track segments in dedicated processors before onward transmission to other trigger processors which will combine tracker information with data originating from the calorimeter and muon detectors, to make the final L1 trigger decision. The architecture for processing the tracker data outside the detector is under study, using several alternative approaches. One attractive possibility is to exploit a Time Multiplexed design similar to the one which is currently being implemented in the CMS calorimeter trigger as part of the Phase I trigger upgrade. The novel Time Multiplexed Trigger concept is explained, the potential benefits for processing future tracker data are described and a feasible design based on currently existing hardware is outlined.
Issue Date: 20-Oct-2015
Date of Acceptance: 22-Sep-2015
URI: http://hdl.handle.net/10044/1/46203
DOI: https:dx.doi.org/10.1016/j.nima.2015.09.075
ISSN: 0168-9002
Publisher: Elsevier
Start Page: 292
End Page: 295
Journal / Book Title: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
Volume: 824
Copyright Statement: © 2015 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)
Sponsor/Funder: Science and Technology Facilities Council (STFC)
Funder's Grant Number: ST/K003240/1
Keywords: Science & Technology
Technology
Physical Sciences
Instruments & Instrumentation
Nuclear Science & Technology
Physics, Nuclear
Physics, Particles & Fields
Physics
Tracking detectors
Level-1 trigger
Silicon detectors
Nuclear & Particles Physics
0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics
Publication Status: Published
Appears in Collections:Physics
High Energy Physics



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