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Harnew, N.; Gao, R.; Hadavizadeh, T.; Hancock, T.H.; Smallwood, J.C.; Brook, N.H.; Bhasin, S.; Cussans, D.; Rademacker, J.; Forty, R.; Frei, C.; Gys, T.; Piedigrossi, D.; van Dijk, M.W.U.; Gabriel, E.P.M.; Conneely, T.; Milnes, J.; Blake, T.; Cicala, M.F.; Gershon, T.; Jones, T.; Kreps, M.
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 03/2023, Letnik: 1048Journal Article
TORCH is a large-area time-of-flight (ToF) detector, proposed for the Upgrade-II of the LHCb experiment. It will provide charged hadron identification over a 2–20 GeV/c momentum range, given a 9.5m flight distance from the LHC interaction point. To achieve this level of performance, a 15ps timing resolution per track is required. A TORCH prototype module having a 1250×660×10mm3 fused-silica radiator plate and equipped with two MCP-PMTs has been tested in a 8GeV/c CERN test-beam. Single-photon time resolutions of between 70–100ps have been achieved, dependent on the beam position in the radiator. The measured photon yields agree with expectations.
