Status of the TORCH Project

N. Harnew; S. Bhasin; T. Blake; N. H. Brook; M. F. Cicala; T. Conneely; D. Cussans; M. W. U. vanDijk; R. Forty; C. Frei; E. P. M. Gabriel; R. Gao; T. Gershon; T. Gys; T. Hadavizadeh; T. H. Hancock; M. Kreps; J. Milnes; D. Piedigrossi; J. Rademacker

doi:10.1088/1748-0221/15/04/c04031

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arXiv · 2003.03373

Status of the TORCH Project

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Abstract

The TORCH time-of-flight detector will provide particle identification between 2-10 GeV/c momentum over a flight distance of 10 m, and is designed for large-area coverage, up to 30 m^2. A 15 ps time-of-flight resolution per incident particle is anticipated by measuring the arrival times from Cherenkov photons produced in a synthetic fused silica radiator plate of 10 mm thickness. Customised Micro-Channel Plate Photomultiplier Tube (MCP-PMT) photon detectors of 53 x 53 mm^2 active area with a 64 x 64 granularity have been developed with industrial partners. Test-beam studies using both a small-scale TORCH demonstrator and a half-length TORCH module are presented. The desired timing resolution of 70 ps per single photon is close to being achieved.

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N. Harnew, S. Bhasin, T. Blake, N. H. Brook, M. F. Cicala, T. Conneely, D. Cussans, M. W. U. vanDijk, R. Forty, C. Frei, E. P. M. Gabriel, R. Gao, T. Gershon, T. Gys, T. Hadavizadeh, T. H. Hancock, M. Kreps, J. Milnes, D. Piedigrossi, J. Rademacker. 2020-03-06. Status of the TORCH Project. https://doi.org/10.1088/1748-0221/15/04/c04031

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