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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Bibliographic Details
Published in:Journal of instrumentation 2022-05, Vol.17 (5), p.C05015
Main Authors: 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.
Format: Article
Language:English
Subjects:
Charged particles
Cherenkov detectors
Customization
Electronic detector readout concepts (solid-state)
Electronics
Ethernet
Front-end electronics for detector readout
Microchannel plates
Microchannels
Photomultiplier tubes
Photons
Read out systems
Time measurement
Timing detectors
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Summary: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.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/17/05/C05015