Design, assembly and beam validation of a full-scale TORCH module
Year: 2026
Type: article
Abstract: The TORCH time-of-flight detector is part of a proposed upgrade of the LHCb experiment, foreseen for the high-luminosity phase of the LHC. The TORCH detector provides particle identification of hadrons in the sub-10 GeV/c momentum range, exploiting the prompt production of Cherenkov photons in an array of fused-silica plates. Photons are propagated to the periphery of the detector via total internal reflection, where they are focused by a cylindrical mirror onto an array of fast-timing MCP-PMT photon detectors. In order to achieve the design goals of TORCH, individual photons must be timed to 70 ps precision or better. The development of the MCP-PMTs, the mechanical design and assembly strategy of a full-scale TORCH detector module, plus its system-level validation in a test beam are described. A validation of timing references, the optical integrity across glue joints and the readout integration are presented.
Authors: A. Abdelmotteleb, M. Adinolfi, M. Armour, T. Blake, T. Conneely, D. Cussans, A. Davidson, S. Dekkers, R. Dzhygadlo, U. Egede, T.C. Fearon, C. Frei, R. Forty, R. Gao, T. Gershon, T. Gys, T. Hadavizadeh, G. Hallett, N. Harnew, D. Hu, K. Jewkes, M. Kreps, J. Lapington, M. Lehuraux, P. Li, J. Liu, A. Lowe, M. Loutit, T. Ma, I. Mackay, S. Malde, S. Mao, A. Markfort, J. Milnes, A. Mitra, R. Pestotnik, D. Piedigrossi, I. Polyakov, W. Qian, R. Rabadan, J. Rademacker, G. Schepers, J. Schwiening, M. Shao, T. Slater, S. Stanislaus, E. Walton, N. Wang, Y. Wang, B. Westhenry, G. Wilkinson, A. York, L. Zhu
Institutions: University of Warwick, University of Bristol, Photek (United Kingdom), Monash University, GSI Helmholtz Centre for Heavy Ion Research, European Organization for Nuclear Research, University of Oxford, University of Science and Technology of China, University of Leicester, University of Chinese Academy of Sciences, Jožef Stefan Institute
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,620
OpenAlex ID: W7147124493