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The TORCH time-of-flight detector
/ Harnew, N (Oxford U.) ; Gao, R (Oxford U.) ; Hadavizadeh, T (Oxford U.) ; Hancock, T H (Oxford U.) ; Smallwood, J C (Oxford U.) ; Brook, N H (Bath U.) ; Bhasin, S (Bristol U.) ; Cussans, D (Bristol U.) ; Rademacker, J (Bristol U.) ; Forty, R (CERN) et al.
TORCH is a large-area time-of-flight (ToF) detector, proposed for the Upgrade-II of the LHCb experiment. It will provide charged hadron identification over a 2–20 GeV/c momentum range, given a 9.5m flight distance from the LHC interaction point. [...]
2022 - 3 p.
In : 15th Pisa Meeting on Advanced Detectors, La Biodola - Isola D'elba, Italy, 22 - 28 May 2022, pp.167991
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2.
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TORCH pattern recognition and particle identification performance
/ Garcia Martin, L M (Warwick U.) ; Blake, T (Warwick U.) ; Brook, N H (Bath U.) ; Cicala, M F (Warwick U.) ; Cussans, D (Bristol U.) ; van Dijk, M W U (CERN) ; Forty, R (CERN) ; Gershon, T (Warwick U.) ; Gys, T (CERN) ; Hadavizadeh, T (Oxford U.) et al.
The TORCH detector aims to provide K/π (K/p) separation up to a momentum of about 10 (15) by measuring their time-of-flight at the LHCb detector. Prompt Cherenkov photons are produced in a quartz radiator bar of 10 mm thickness, and propagated via total internal reflection to the periphery of the detector, where they are focused onto an array of microchannel plate photomultipliers that measure the photon arrival time and position. [...]
2023 - 4 p.
Fulltext: PDF;
In : 11th International Workshop on Ring Imaging Cherenkov Detectors (RICH 2022), Edinburgh, United Kingdom, 12 - 16 Sep 2022, pp.168437
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Measurement of the cross-section ratio σ$_{ψ(2S)}$/σ$_{J/ψ(1S)}$ in exclusive photoproduction at HERA
/ ZEUS Collaboration
The exclusive photoproduction reactions $\gamma p \to J/\psi(1S) p$ and $\gamma p \to \psi(2S) p$ have been measured at an $ep$ centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 373 pb$^{-1}$. The measurement was made in the kinematic range $30 < W < 180$ GeV, $Q^2 < 1$ GeV$^2$ and $|t| < 1$ GeV$^2$, where $W$ is the photon--proton centre-of-mass energy, $Q^2$ is the photon virtuality and $t$ is the squared four-momentum transfer at the proton vertex. [...]
arXiv:2206.13343; DESY-22-107.-
2022-12-29 - 27 p.
- Published in : JHEP 2212 (2022) 164
Fulltext: document - PDF; 2206.13343 - PDF;
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4.
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New developments from the TORCH R&D; project
/ Jones, T (Warwick U.) ; Bhasin, S (Bath U. ; Bristol U.) ; Blake, T (Warwick U.) ; Brook, N H (Bath U.) ; Cicala, M F (Warwick U.) ; Conneely, T (Photek Ltd., UK) ; Cussans, D (Bristol U.) ; van Dijk, M W U (CERN) ; Forty, R (CERN) ; Frei, C (CERN) et al.
TORCH is a large-area and high-precision time-of-flight detector, designed to provide charged particle identification over a 2–20GeV/c momentum range. The TORCH detector comprises a 10 mm thick quartz radiator, instrumented with photon detectors, which precisely time and measure the arrival positions of the Cherenkov photons. [...]
2023 - 5 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1045 (2023) 167535
In : Vienna Conference on Instrumentation (VCI 2022), Online, Online, 21 - 25 Feb 2022, pp.167535
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5.
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Performance of a prototype TORCH time-of-flight detector
/ Bhasin, S. (Bristol U. ; Bath U.) ; Blake, T. (Warwick U.) ; Brook, N.H. (Bath U.) ; Cicala, M.F. (Warwick U.) ; Conneely, T. (Astrium Ltd., Stevenage) ; Cussans, D. (Bristol U.) ; van Dijk, M.W.U. (CERN) ; Forty, R. (CERN) ; Frei, C. (CERN) ; Gabriel, E.P.M. (Edinburgh U., Inst. Astron.) et al.
TORCH is a novel time-of-flight detector, designed to provide charged particle identification of pions, kaons and protons in the momentum range 2-20 GeV/c over a 9.5 m flight path. A detector module, comprising a 10mm thick quartz plate, provides a source of Cherenkov photons which propagate via total internal reflection to one end of the plate. [...]
arXiv:2209.13379.-
2023-03-06 - 19 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 1050 (2023) 168181
Fulltext: PDF;
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Picosecond timing of charged particles using the TORCH detector
/ Cicala, Maria Flavia (Warwick U.) ; Bhasin, Srishti (Bath U. ; Bristol U.) ; Blake, Thomas (Warwick U.) ; Brook, Nick H. (Bath U.) ; Conneely, Thomas (Unlisted, UK) ; Cussans, David (Bristol U.) ; van Dijk, Maarten W.U. (CERN) ; Forty, Roger (CERN) ; Frei, Christoph (CERN) ; Gabriel, Emmy P.M. (Edinburgh U.) et al.
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). [...]
arXiv:2203.13774.-
2022-09-01 - 13 p.
Fulltext: 2203.13774 - PDF; Publication - PDF;
In : Vienna Conference on Instrumentation (VCI 2022), Online, Austria, 21 - 25 Feb 2022, pp.166950
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7.
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8.
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Azimuthal correlations in photoproduction and deep inelastic $ep$ scattering at HERA
/ ZEUS Collaboration
Collective behaviour of final-state hadrons, and multiparton interactions are studied in high-multiplicity $ep$ scattering at a centre-of-mass energy $\sqrt{s}=318$ GeV with the ZEUS detector at HERA. Two- and four-particle azimuthal correlations, as well as multiplicity, transverse momentum, and pseudorapidity distributions for charged-particle multiplicities $N_{\textrm ch} \geq 20$ are measured. [...]
arXiv:2106.12377; DESY-21-099.-
2021-12-16 - 27 p.
- Published in : JHEP 2112 (2021) 102
Fulltext: document - PDF; 2106.12377 - PDF;
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9.
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Test-beam performance of a TORCH prototype module
/ Kreps, Michal (Warwick U.) ; Bhasin, Srishti (Bath U. ; Bristol U.) ; Blake, Thomas (Warwick U.) ; Brook, Nick H (Bath U.) ; Cicala, Maria Flavia (Warwick U.) ; Conneely, Tom (Unlisted, UK) ; Cussans, David (Bristol U.) ; Van Dijk, Maarten Willibrord Uriël (CERN ; LPHE, Lausanne) ; Forty, Roger (CERN) ; Frei, Christoph (CERN) et al.
The TORCH time-of-flight detector is designed to provide a 15 ps timing resolution for charged particles, resulting in $K/\pi$ $(p/K)$ particle identification up to momentum of about 10(15) GeV/$c$ over a 10 m flight distance. Cherenkov photons, produced in a quartz plate of 10 mm thickness, are focused onto an array of micro-channel plate photomultipliers (MCP-PMTs) which measure the photon arrival times and spatial positions. [...]
SISSA, 2021 - 6 p.
- Published in : PoS ICHEP2020 (2021) 854
Fulltext: PDF;
In : 40th International Conference on High Energy Physics (ICHEP), Prague, Czech Republic, 28 Jul - 6 Aug 2020, pp.854
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10.
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Test-beam demonstration of a TORCH prototype module
/ Smallwood, J.C. (U. Oxford (main)) ; Bhasin, S. (Bath U. ; Bristol U.) ; Blake, T. (Warwick U.) ; Brook, N.H. (Bath U.) ; Cicala, M.F. (Warwick U.) ; Conneely, T. (Astrium Ltd., Stevenage) ; Cussans, D. (Bristol U.) ; van Dijk, M.W.U. (CERN) ; Forty, R. (CERN) ; Frei, C. (CERN) et al.
The TORCH time-of-flight detector is designed to provide a 15 ps timing resolution for charged particles, resulting in $\pi$/$K$ particle identification up to 10 GeV/c momentum over a 10 m flight path. Cherenkov photons, produced in a quartz plate of 10 mm thickness, are focused onto an array of micro-channel plate photomultipliers (MCP-PMTs) which measure the photon arrival times and spatial positions. [...]
arXiv:2111.04627.-
2022 - 6 p.
- Published in : J. Phys. : Conf. Ser. 2374 (2022) 012004
Fulltext: document - PDF; 2111.04627 - PDF;
In : International Conference on Technology and Instrumentation in Particle Physics (TIPP 2021), Online, Canada, 24 - 29 May 2021, pp.012004
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