TY - JOUR
T1 - Beam tests of a large-scale TORCH time-of-flight demonstrator
AU - Hancock, T. H.
AU - Bhasin, S.
AU - Blake, T.
AU - Brook, N.
AU - Conneely, T.
AU - Cussans, D.
AU - Frei, C.
AU - Forty, R.
AU - Gabriel, E. P.M.
AU - Gao, R.
AU - Gershon, T.
AU - Gys, T.
AU - Hadavizadeh, T.
AU - Harnew, N.
AU - Kreps, M.
AU - Milnes, J.
AU - Piedigrossi, D.
AU - Rademacker, J.
AU - van Dijk, M.
PY - 2019/4
Y1 - 2019/4
N2 - The TORCH time-of-flight detector is designed to provide particle identification in the momentum range 2−10GeV∕c over large areas. The detector exploits prompt Cherenkov light produced by charged particles traversing a 10mm thick quartz plate. The photons propagate via total internal reflection and are focused onto a detector plane comprising position-sensitive Micro-Channel Plate Photo-Multiplier Tubes (MCP-PMT)detectors. The goal is to achieve a single-photon timing resolution of 70ps, giving a timing precision of 15ps per charged particle by combining the information from around 30 detected photons. The MCP-PMT detectors have been developed with a commercial partner (Photek Ltd, UK), leading to the delivery of a square tube of active area 53×53mm 2 with a granularity of 8×128pixels equivalent. A large-scale demonstrator of TORCH, having a quartz plate of dimensions 660×1250×10mm 3 and read out by a pair of MCP-PMTs with custom readout electronics, has been verified in a test beam campaign at the CERN PS. Preliminary results indicate that the required performance is close to being achieved. The anticipated performance of a full-scale TORCH detector at the LHCb experiment is presented.
AB - The TORCH time-of-flight detector is designed to provide particle identification in the momentum range 2−10GeV∕c over large areas. The detector exploits prompt Cherenkov light produced by charged particles traversing a 10mm thick quartz plate. The photons propagate via total internal reflection and are focused onto a detector plane comprising position-sensitive Micro-Channel Plate Photo-Multiplier Tubes (MCP-PMT)detectors. The goal is to achieve a single-photon timing resolution of 70ps, giving a timing precision of 15ps per charged particle by combining the information from around 30 detected photons. The MCP-PMT detectors have been developed with a commercial partner (Photek Ltd, UK), leading to the delivery of a square tube of active area 53×53mm 2 with a granularity of 8×128pixels equivalent. A large-scale demonstrator of TORCH, having a quartz plate of dimensions 660×1250×10mm 3 and read out by a pair of MCP-PMTs with custom readout electronics, has been verified in a test beam campaign at the CERN PS. Preliminary results indicate that the required performance is close to being achieved. The anticipated performance of a full-scale TORCH detector at the LHCb experiment is presented.
KW - Cherenkov radiation
KW - LHCb upgrade
KW - Micro-channel plate photo-multiplier tubes
KW - Particle identification
KW - Time-of-flight
UR - http://www.scopus.com/inward/record.url?scp=85064749693&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2019.04.014
DO - 10.1016/j.nima.2019.04.014
M3 - Article
AN - SCOPUS:85064749693
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 -