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.
@article{arxiv.2003.03373,
title = {Status of the TORCH Project},
author = {N. Harnew and S. Bhasin and T. Blake and N. H. Brook and M. F. Cicala and T. Conneely and D. Cussans and M. W. U. vanDijk and R. Forty and C. Frei and E. P. M. Gabriel and R. Gao and T. Gershon and T. Gys and T. Hadavizadeh and T. H. Hancock and M. Kreps and J. Milnes and D. Piedigrossi and J. Rademacker},
journal= {arXiv preprint arXiv:2003.03373},
year = {2020}
}
Comments
10 pages, 9 figures. Proceedings of the DIRC2019 Workshop, Castle Rauischholzhausen 11-13 Sept 2019. arXiv admin note: substantial text overlap with arXiv:1810.06658