29 July 2018 to 4 August 2018
Russian Academy of Sciences
Europe/Moscow timezone

Development of the TORCH time-of-flight detector

3 Aug 2018, 09:00
Blue Hall (Russian Academy of Sciences)

Blue Hall

Russian Academy of Sciences

Leninsky Prospekt, 32а Moscow 119071 Russian Federation
oral presentation [20+5 min] Alternative PID techniques Alternative PID techniques


Neville Harnew (University of Oxford)


The TORCH time-of-flight detector, designed to provide particle identification over the momentum range 2–10 GeV/c over large areas, is under development. The detector exploits prompt Cherenkov light produced by charge particles traversing a 10 mm thick quartz plate. The photons propagate via total-internal reflection and are focussed onto a detector plane comprising position-sensitive micro-channel plate (MCP) detectors. The goal is to achieve a resolution of 15 ps per particle by combining the information from around 30 detected photons, given a single-photon resolution of 70 ps. The MCP-PMT detectors have been developed with a commercial partner (Photek), leading to the delivery of a square 53 by 53mm tube, with 8 by 128 pixels equivalent, capable of withstanding a large integrated charge on its anode (5 Ccm^{-2}). A small-scale demonstrator of TORCH has been verified in beam tests at the CERN PS with custom readout electronics and a data-driven calibration. Preliminary results indicate a single photon-resolution better than 100 ps can achieved. Progress towards a larger-scale system with a 10 MCP-PMTs will be presented.

Primary author

Neville Harnew (University of Oxford)

Presentation Materials

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