TORCH: A large area time-of-flight detector for particle identification

N. Harnew*, S. Bhasin, T. Blake, N. H. Brook, T. Conneely, D. Cussans, M. van Dijk, R. Forty, C. Frei, E. P.M. Gabriel, R. Gao, T. J. Gershon, T. Gys, T. Hadavizadeh, T. H. Hancock, M. Kreps, J. Milnes, D. Piedigrossi, J. Rademacker

*Corresponding author for this work

Research output: Contribution to journalReview article (Academic Journal)peer-review

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TORCH is a time-of-flight detector that is being developed for the Upgrade II of the LHCb experiment, with the aim of providing charged particle identification over the momentum range 2–10GeV/c. A small-scale TORCH demonstrator with customised readout electronics has been operated successfully in beam tests at the CERN PS. Preliminary results indicate that a single-photon resolution better than 100ps can be achieved.

Original languageEnglish
Pages (from-to)595-597
Number of pages3
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Early online date19 Oct 2018
Publication statusPublished - 21 Aug 2019


  • Cherenkov radiation
  • LHCb upgrade
  • Micro-channel plate photomultipliers
  • Particle identification
  • Time-of-flight


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