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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...
Autores principales: | , , , , , , , , , , , , , , , , , , , , , |
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Lenguaje: | eng |
Publicado: |
2022
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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&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&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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