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Precision timing in high pile-up and time-based vertex reconstruction

Flamant, Cedric Wen (2014) Precision timing in high pile-up and time-based vertex reconstruction. California Institute of Technology , Pasadena, CA. (Submitted)

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For the High Luminosity upgrade of the Large Hadron Collider (HL-LHC), the Com- pact Muon Solenoid Experiment (CMS) is currently studying various upgrade options (CMS Phase II Upgrade). HL-LHC involves raising the rate of collisions (luminosity) by a factor of 10 beyond the LHC’s original design value, posing the challenge of an in- creased rate of collisions per bunch-crossing (pile-up). In high pile-up conditions, it is difficult to assign final state particles to individual collisions, and complicated to separate jets. Studies have been conducted on the use of time of flight measurements in the elec- tromagnetic calorimeter (ECAL) of CMS in regards to time cleaning of pile-up jets and vertexing through triangulation of rechits. This project verifies a few applications of ECAL timing within the recently updated timing portion of the CMSSW framework.

Item Type:Report or Paper (Discussion Paper)
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URLURL TypeDescription Document Server
Alternate Title:Pile-Up: multiple collisions happening in a single bunch crossing, Vertex Reconstruction: locating collision points
Additional Information:CERN Document Server: Preprints (2014), 1-5. CERN-STUDENTS-Note-2014-073.
Subject Keywords:Detectors and Experimental Techniques ; Particle Physics - Experiment
Non-Subject Keywords:Vertexing ; Vertex Reconstruction ; Pile-Up ; ECAL ; Precision Timing
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Record Number:CaltechAUTHORS:20141102-102949284
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51147
Deposited By: Joy Painter
Deposited On:03 Nov 2014 20:24
Last Modified:03 Oct 2019 07:30

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