A precision time of flight readout system for the TORCH prototype detector

The TORCH detector provides low-momentum particle identification, combining Time of Flight (TOF) and Cherenkov techniques to achieve charged particle pi/K/p separation between 2–20 GeV/c over a flight distance of 10 m. The measurement requires a timing resolution of 70 ps for single Cherenkov photon...

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Detalles Bibliográficos
Autores principales: Gao, R, Bhasin, S, Blake, T, Brook, N, Cicala, F, Conneely, T, Cussans, D, Forty, R, Frei, C, Gabriel, E, Gershon, T, Gys, T, Hadavizadeh, T, Hancock, T, Harnew, N, Kreps, M, Milnes, J, Piedigrossi, D, Rademacker, J, Van Dijk, M
Lenguaje:eng
Publicado: 2022
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.1088/1748-0221/17/05/C05015
http://cds.cern.ch/record/2823934
Descripción
Sumario:The TORCH detector provides low-momentum particle identification, combining Time of Flight (TOF) and Cherenkov techniques to achieve charged particle pi/K/p separation between 2–20 GeV/c over a flight distance of 10 m. The measurement requires a timing resolution of 70 ps for single Cherenkov photons. For precision photon detection, customised Micro-Channel Plate Photomultiplier Tubes (MCP-PMTs) with high precision TOF measurement electronics have been developed. The electronics measures time-over-threshold from the MCP-PMT and features a 10-Gigabit Ethernet readout. This paper reports the design and performance of a 5120-channel system which currently instruments a pair of MCP-PMTs, but has the capacity to read out ten customised MCP-PMT devices in the future.

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