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Picosecond timing of charged particles using the TORCH detector

TORCH is a large-area, high-precision time-of-flight (ToF) detector designed to provide charged-particle identification in the 2–20 GeV/<math display="inline" id="d1e613" altimg="si1.svg"><mi>c</mi></math> momentum range. Prompt Cherenkov photons...

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Autores principales: Cicala, Maria Flavia, Bhasin, Srishti, Blake, Thomas, Brook, Nick H., Conneely, Thomas, Cussans, David, van Dijk, Maarten W.U., Forty, Roger, Frei, Christoph, Gabriel, Emmy P.M., Gao, Rui, Gershon, Timothy, Gys, Thierry, Hadavizadeh, Thomas, Hancock, Thomas Henry, Harnew, Neville, Jones, Thomas, Kreps, Michal, Milnes, James, Piedigrossi, Didier, Rademacker, Jonas, Smallwood, Jennifer Clare
Lenguaje:eng
Publicado: 2022
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.nima.2022.166950
http://cds.cern.ch/record/2806562
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author Cicala, Maria Flavia
Bhasin, Srishti
Blake, Thomas
Brook, Nick H.
Conneely, Thomas
Cussans, David
van Dijk, Maarten W.U.
Forty, Roger
Frei, Christoph
Gabriel, Emmy P.M.
Gao, Rui
Gershon, Timothy
Gys, Thierry
Hadavizadeh, Thomas
Hancock, Thomas Henry
Harnew, Neville
Jones, Thomas
Kreps, Michal
Milnes, James
Piedigrossi, Didier
Rademacker, Jonas
Smallwood, Jennifer Clare
author_facet Cicala, Maria Flavia
Bhasin, Srishti
Blake, Thomas
Brook, Nick H.
Conneely, Thomas
Cussans, David
van Dijk, Maarten W.U.
Forty, Roger
Frei, Christoph
Gabriel, Emmy P.M.
Gao, Rui
Gershon, Timothy
Gys, Thierry
Hadavizadeh, Thomas
Hancock, Thomas Henry
Harnew, Neville
Jones, Thomas
Kreps, Michal
Milnes, James
Piedigrossi, Didier
Rademacker, Jonas
Smallwood, Jennifer Clare
author_sort Cicala, Maria Flavia
collection CERN
description TORCH is a large-area, high-precision time-of-flight (ToF) detector designed to provide charged-particle identification in the 2–20 GeV/<math display="inline" id="d1e613" altimg="si1.svg"><mi>c</mi></math> momentum range. Prompt Cherenkov photons emitted by charged hadrons as they traverse a 10 mm quartz radiator are propagated to the periphery of the detector, where they are focused onto an array of micro-channel plate photomultiplier tubes (MCP-PMTs). The position and arrival times of the photons are used to infer the particles’ time of entry in the radiator, to identify hadrons based on their ToF. The MCP-PMTs were developed with an industrial partner to satisfy the stringent requirements of the TORCH detector. The requirements include a finely segmented anode, excellent time resolution, and a long lifetime. Over an approximately 10 m flight distance, the difference in ToF between a kaon and a pion with 10 GeV/<math display="inline" id="d1e618" altimg="si1.svg"><mi>c</mi></math> momentum is 35 ps, leading to a 10–15 ps per track timing resolution requirement. On average 30 photons per hadron are detected, which translates to a single-photon time resolution of 70 ps. The TORCH R&amp;D program aims to demonstrate the validity of the detector concept through laboratory and beam tests, results from which are presented. A timing resolution of 70–100 ps was reached in beam tests, approaching the TORCH design goal. Laboratory timing tests consist of operating the MCP-PMTs coupled to the TORCH readout electronics. A time resolution of  50 ps was measured, meeting the TORCH target timing resolution.
id cern-2806562
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2022
record_format invenio
spelling cern-28065622023-01-31T03:59:45Zdoi:10.1016/j.nima.2022.166950http://cds.cern.ch/record/2806562engCicala, Maria FlaviaBhasin, SrishtiBlake, ThomasBrook, Nick H.Conneely, ThomasCussans, Davidvan Dijk, Maarten W.U.Forty, RogerFrei, ChristophGabriel, Emmy P.M.Gao, RuiGershon, TimothyGys, ThierryHadavizadeh, ThomasHancock, Thomas HenryHarnew, NevilleJones, ThomasKreps, MichalMilnes, JamesPiedigrossi, DidierRademacker, JonasSmallwood, Jennifer ClarePicosecond timing of charged particles using the TORCH detectorhep-exParticle Physics - Experimentphysics.ins-detDetectors and Experimental TechniquesTORCH is a large-area, high-precision time-of-flight (ToF) detector designed to provide charged-particle identification in the 2–20 GeV/<math display="inline" id="d1e613" altimg="si1.svg"><mi>c</mi></math> momentum range. Prompt Cherenkov photons emitted by charged hadrons as they traverse a 10 mm quartz radiator are propagated to the periphery of the detector, where they are focused onto an array of micro-channel plate photomultiplier tubes (MCP-PMTs). The position and arrival times of the photons are used to infer the particles’ time of entry in the radiator, to identify hadrons based on their ToF. The MCP-PMTs were developed with an industrial partner to satisfy the stringent requirements of the TORCH detector. The requirements include a finely segmented anode, excellent time resolution, and a long lifetime. Over an approximately 10 m flight distance, the difference in ToF between a kaon and a pion with 10 GeV/<math display="inline" id="d1e618" altimg="si1.svg"><mi>c</mi></math> momentum is 35 ps, leading to a 10–15 ps per track timing resolution requirement. On average 30 photons per hadron are detected, which translates to a single-photon time resolution of 70 ps. The TORCH R&amp;D program aims to demonstrate the validity of the detector concept through laboratory and beam tests, results from which are presented. A timing resolution of 70–100 ps was reached in beam tests, approaching the TORCH design goal. Laboratory timing tests consist of operating the MCP-PMTs coupled to the TORCH readout electronics. A time resolution of  50 ps was measured, meeting the TORCH target timing resolution.TORCH is a large-area, high-precision time-of-flight (ToF) detector designed to provide charged-particle identification in the 2-20 GeV$/c$ momentum range. Prompt Cherenkov photons emitted by charged hadrons as they traverse a 10mm quartz radiator are propagated to the periphery of the detector, where they are focused onto an array of micro-channel plate photomultiplier tubes (MCP-PMTs). The position and arrival times of the photons are used to infer the particles' time of entry in the radiator, to identify hadrons based on their ToF. The MCP-PMTs were developed with an industrial partner to satisfy the stringent requirements of the TORCH detector. The requirements include a finely segmented anode, excellent time resolution, and a long lifetime. Over an approximately 10m flight distance, the difference in ToF between a kaon and a pion with 10GeV$/c$ momentum is 35ps, leading to a 10-15ps per track timing resolution requirement. On average 30 photons per hadron are detected, which translates to a single-photon time resolution of 70ps. The TORCH research and development program aims to demonstrate the validity of the detector concept through laboratory and beam tests, results from which are presented. A timing resolution of 70-100ps was reached in beam tests, approaching the TORCH design goal. Laboratory timing tests consist of operating the MCP-PMTs coupled to the TORCH readout electronics. A time resolution of about 50ps was measured, meeting the TORCH target timing resolution.arXiv:2203.13774oai:cds.cern.ch:28065622022-03-25
spellingShingle hep-ex
Particle Physics - Experiment
physics.ins-det
Detectors and Experimental Techniques
Cicala, Maria Flavia
Bhasin, Srishti
Blake, Thomas
Brook, Nick H.
Conneely, Thomas
Cussans, David
van Dijk, Maarten W.U.
Forty, Roger
Frei, Christoph
Gabriel, Emmy P.M.
Gao, Rui
Gershon, Timothy
Gys, Thierry
Hadavizadeh, Thomas
Hancock, Thomas Henry
Harnew, Neville
Jones, Thomas
Kreps, Michal
Milnes, James
Piedigrossi, Didier
Rademacker, Jonas
Smallwood, Jennifer Clare
Picosecond timing of charged particles using the TORCH detector
title Picosecond timing of charged particles using the TORCH detector
title_full Picosecond timing of charged particles using the TORCH detector
title_fullStr Picosecond timing of charged particles using the TORCH detector
title_full_unstemmed Picosecond timing of charged particles using the TORCH detector
title_short Picosecond timing of charged particles using the TORCH detector
title_sort picosecond timing of charged particles using the torch detector
topic hep-ex
Particle Physics - Experiment
physics.ins-det
Detectors and Experimental Techniques
url https://dx.doi.org/10.1016/j.nima.2022.166950
http://cds.cern.ch/record/2806562
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