Test-beam performance of a TORCH prototype module

M. Kreps, S. Bhasin, T. Blake, N. H. Brook, M. F. Cicala, T. Conneely, D. Cussans, M. W.U. van Dijk, R. Forty, C. Frei, E. P.M. Gabriel, R. Gao, T. Gershon, T. Gys, T. Hadavizadeh, T. H. Hancock, N. Harnew, T. Jones, J. Milnes, D. PiedigrossiJ. Rademacker, J. Smallwood

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearch

Abstract

The TORCH time-of-flight detector is designed to provide a 15 ps timing resolution for charged particles, resulting in K/p (p/K) particle identification up to momentum of about 10 (15) GeV/c over a 10 m flight distance. Cherenkov photons, produced in a quartz plate of 10 mm thickness, are focused onto an array of micro-channel plate photomultipliers (MCP-PMTs) which measure the photon arrival times and spatial positions. A TORCH demonstrator module instrumented with a customised MCP-PMTs has been tested at the CERN PS. The useful implementation for the particle identification in the LHCb experiment requires single-photon time resolution of 70 ps. The timing performance and photon yields have been measured as a function of beam position in the radiator, giving measurements which are approaching the required resolution. A possible TORCH design of the particle identification system in the LHCb experiment has been simulated and its potential for high luminosity running has been evaluated.

Original languageEnglish
Title of host publicationProceedings of Science
PublisherSissa Medialab, SRL
Number of pages6
Volume390
DOIs
Publication statusPublished - 15 Apr 2021
EventInternational Conference on High Energy Physics, 2020 - Virtual, Prague, Czechia
Duration: 28 Jul 20206 Aug 2020
Conference number: 40th
https://pos.sissa.it/390/

Publication series

NameProceedings of Science
PublisherSissa Medialab, SRL
ISSN (Print)1824-8039

Conference

ConferenceInternational Conference on High Energy Physics, 2020
Abbreviated titleICHEP 2020
Country/TerritoryCzechia
CityVirtual, Prague
Period28/07/206/08/20
Internet address

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