Status of the TORCH time-of-flight project

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

doi:10.1016/j.nima.2018.12.007

Status of the TORCH time-of-flight project

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

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Abstract

TORCH is a time-of-flight detector, designed to provide charged π∕K particle identification up to a momentum of 10GeV/c for a 10m flight path. To achieve this level of performance, a time resolution of 15 ps per incident particle is required. TORCH uses a plane of quartz of 1 cm thickness as a source of Cherenkov photons, which are then focussed onto square Micro-Channel Plate Photomultipliers (MCP-PMTs) of active area 53 × 53mm², segmented into 8 × 128 pixels equivalent. A small-scale TORCH demonstrator with a customised MCP-PMT and associated readout electronics has been successfully operated in a 5GeV/c mixed pion/proton beam at the CERN PS facility. Preliminary results indicate that a single-photon resolution better than 100ps can be achieved. The expected performance of a full-scale TORCH detector for the Upgrade II of the LHCb experiment is also discussed.

Original language	English
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Early online date	7 Dec 2018
DOIs	https://doi.org/10.1016/j.nima.2018.12.007
Publication status	E-pub ahead of print - 7 Dec 2018

Keywords

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

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Harnew, N., Bhasin, S., Blake, T., Brook, N. H., Conneely, T., Cussans, D., van Dijk, M., Forty, R., Frei, C., Gabriel, E. P. M., Gao, R., Gershon, T. J., Gys, T., Hadavizadeh, T., Hancock, T. H., Kreps, M., Milnes, J., Piedigrossi, D., & Rademacker, J. (2018). Status of the TORCH time-of-flight project. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. https://doi.org/10.1016/j.nima.2018.12.007

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title = "Status of the TORCH time-of-flight project",

abstract = "TORCH is a time-of-flight detector, designed to provide charged π∕K particle identification up to a momentum of 10GeV/c for a 10m flight path. To achieve this level of performance, a time resolution of 15 ps per incident particle is required. TORCH uses a plane of quartz of 1 cm thickness as a source of Cherenkov photons, which are then focussed onto square Micro-Channel Plate Photomultipliers (MCP-PMTs) of active area 53 × 53mm2, segmented into 8 × 128 pixels equivalent. A small-scale TORCH demonstrator with a customised MCP-PMT and associated readout electronics has been successfully operated in a 5GeV/c mixed pion/proton beam at the CERN PS facility. Preliminary results indicate that a single-photon resolution better than 100ps can be achieved. The expected performance of a full-scale TORCH detector for the Upgrade II of the LHCb experiment is also discussed.",

keywords = "Cherenkov radiation, LHCb upgrade, Micro-channel plate photomultipliers, Particle identification, Time-of-flight",

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

year = "2018",

month = dec,

day = "7",

doi = "10.1016/j.nima.2018.12.007",

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Harnew, N, Bhasin, S, Blake, T, Brook, NH, Conneely, T, Cussans, D, van Dijk, M, Forty, R, Frei, C, Gabriel, EPM, Gao, R, Gershon, TJ, Gys, T, Hadavizadeh, T, Hancock, TH, Kreps, M, Milnes, J, Piedigrossi, D & Rademacker, J 2018, 'Status of the TORCH time-of-flight project', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. https://doi.org/10.1016/j.nima.2018.12.007

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T1 - Status of the TORCH time-of-flight project

AU - Harnew, N.

AU - Bhasin, S.

AU - Blake, T.

AU - Brook, N. H.

AU - Conneely, T.

AU - Cussans, D.

AU - van Dijk, M.

AU - Forty, R.

AU - Frei, C.

AU - Gabriel, E. P.M.

AU - Gao, R.

AU - Gershon, T. J.

AU - Gys, T.

AU - Hadavizadeh, T.

AU - Hancock, T. H.

AU - Kreps, M.

AU - Milnes, J.

AU - Piedigrossi, D.

AU - Rademacker, J.

PY - 2018/12/7

Y1 - 2018/12/7

N2 - TORCH is a time-of-flight detector, designed to provide charged π∕K particle identification up to a momentum of 10GeV/c for a 10m flight path. To achieve this level of performance, a time resolution of 15 ps per incident particle is required. TORCH uses a plane of quartz of 1 cm thickness as a source of Cherenkov photons, which are then focussed onto square Micro-Channel Plate Photomultipliers (MCP-PMTs) of active area 53 × 53mm2, segmented into 8 × 128 pixels equivalent. A small-scale TORCH demonstrator with a customised MCP-PMT and associated readout electronics has been successfully operated in a 5GeV/c mixed pion/proton beam at the CERN PS facility. Preliminary results indicate that a single-photon resolution better than 100ps can be achieved. The expected performance of a full-scale TORCH detector for the Upgrade II of the LHCb experiment is also discussed.

AB - TORCH is a time-of-flight detector, designed to provide charged π∕K particle identification up to a momentum of 10GeV/c for a 10m flight path. To achieve this level of performance, a time resolution of 15 ps per incident particle is required. TORCH uses a plane of quartz of 1 cm thickness as a source of Cherenkov photons, which are then focussed onto square Micro-Channel Plate Photomultipliers (MCP-PMTs) of active area 53 × 53mm2, segmented into 8 × 128 pixels equivalent. A small-scale TORCH demonstrator with a customised MCP-PMT and associated readout electronics has been successfully operated in a 5GeV/c mixed pion/proton beam at the CERN PS facility. Preliminary results indicate that a single-photon resolution better than 100ps can be achieved. The expected performance of a full-scale TORCH detector for the Upgrade II of the LHCb experiment is also discussed.

KW - Cherenkov radiation

KW - LHCb upgrade

KW - Micro-channel plate photomultipliers

KW - Particle identification

KW - Time-of-flight

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U2 - 10.1016/j.nima.2018.12.007

DO - 10.1016/j.nima.2018.12.007

M3 - Article (Academic Journal)

AN - SCOPUS:85059317980

SN - 0168-9002

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

ER -

Status of the TORCH time-of-flight project

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