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The Upgrade of the CMS Tracker

Lead Research Organisation: University of Bristol
Department Name: Physics

Abstract

The CMS experiment at the LHC will undergo major upgrades in preparation for the high luminosity LHC programme, which is scheduled to begin in 2026. The entire tracking detector will be replaced, and the new tracker will be capable of contributing real-time information to the trigger system in order to determine whether collision data is of sufficient interest to be kept for further analysis.
The student will contribute to the design, construction and commissioning of the CMS Upgrade tracker and its components, through physics studies and technical tasks such as prototype and integration testing, and writing software and firmware.

Publications

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Studentship Projects

Project Reference Relationship Related To Start End Student Name
ST/T505912/1 30/09/2019 29/09/2023
2321688 Studentship ST/T505912/1 30/09/2019 29/09/2023 Mei-Li Holmberg
 
Description Thanks to the work associated with this award we were able to finally test a substantial part of the firmware algorithm for tracking particles on real hardware. The output from the algorithm is necessary for the upgrade of the CMS experiment at the LHC to decide what data to save and what data to discard. Work on implementing a software frame work for analysing the latest CMS data. The framework was focusing on finding new particles, specifically light Higgs bosons from the decays of Supersymmetric Particles.
Exploitation Route The firmware work is continued by CMS to finalise the algorithm for use in the CMS upgrade which will be commissioned in the upcoming years.

The physics analysis is continued by new PhD students at RAL.
Sectors Electronics

Other
URL https://cds.cern.ch/record/2883219?ln=en
 
Description As part of the CMS upgrade, the optical connections in the detector cack-end systems, which process the e.g. processes the data, needs to be upgraded as well. I tested commercial high-speed optical transceiver prototypes from a company, and reported the results back to them when they did not perform as specified. Multiple revisions of the prototypes were made by the company, and then tested by us to check that any previous issues were fixed.
First Year Of Impact 2022
Sector Electronics