P. Hobson and D. Leslie with two unused lead-tungstate crystals from the ECAL endcap. Brunel University London was involved in radiation-tolerance evaluation of early prototype crystals using their cobalt-60 facility. (Credit: Iberian Black Arts)
O. Sharif holding the “torpedo” containing a pre-production vacuum phototriode (VPT) before it was tested at 4 Tesla in the dedicated facility at Brunel University London. Brunel tested nearly 20% of all production VPT at 4T before they were transferred to CERN.
Brunel University London joined CMS in 1995 and contributed to early development of the APV chips for the silicon Tracker, primarily radiation-damage issues, and the development of vacuum phototriodes (VPT) that are used in the endcap Electromagnetic Calorimeter. The group has worked with a number of commercial suppliers of VPT. During the VPT production phase, they carried out radiation quality assurance of glass faceplates and evaluating performance at a field of 4 Tesla. They undertook research and development work on heavy metal fluoride glasses as possible scintillators for the Electromagnetic Calorimeter and contributed to radiation-damage studies of prototype lead-tungstate crystals. In the last decade, Brunel University London has provided significant Tier-2 computational resources to CMS via the WLCG and has helped to develop the CMS@Home volunteer computing platform. The group has been involved in both the Phase-1 and Phase-2 Upgrades of the Tracker and this will continue to be their contribution to the upgrade of the detector for the HL-LHC. Their contributions to analysis have been primarily in the field of top-quark studies, both in top-pair and single-top channels, most recently searching for the rare Standard Model production of a single top quark in association with a Z boson.
About Brunel University London
From: United Kingdom
CMS member since: 1995
Website: http://www.brunel.ac.uk/electronic-and-computer-engineering