Details

Autor(en) / Beteiligte

• Ros, A.
• Brook, N.H.
• Castillo-Garcia, L.
• Conneely, T.
• Cussans, D.
• Foehl, K.
• Forty, R.
• Frei, C.
• Gao, R.
• Gys, T.
• Harnew, N.
• Milnes, J.
• Piedigrossi, D.
• Rademacker, J.
• Van Dijk, M.

Titel

Test-beam and laboratory characterisation of the TORCH prototype detector

Ist Teil von

• Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 2017-02, Vol.845, p.452-458

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2017

Link zum Volltext

Quelle

ScienceDirect

Beschreibungen/Notizen

• The TORCH time-of-flight (TOF) detector is being developed to provide particle identification up to a momentum of 10GeV/c over a flight distance of 10m. It has a DIRC-like construction with 10mm thick synthetic amorphous fused-silica plates as a Cherenkov radiator. Photons propagate by total internal reflection to the plate periphery where they are focused onto an array of customised position-sensitive micro-channel plate (MCP) detectors. The goal is to achieve a 15ps time-of-flight resolution per incident particle by combining arrival times from multiple photons. The MCPs have pixels of effective size 0.4mm×6.6mm2 in the vertical and horizontal directions, respectively, by incorporating a novel charge-sharing technique to improve the spatial resolution to better than the pitch of the readout anodes. Prototype photon detectors and readout electronics have been tested and calibrated in the laboratory. Preliminary results from testbeam measurements of a prototype TORCH detector are also presented. •A prototype for a time-of-flight detector for particle identification has been tested.•MCP-PMT detectors, implementing a novel charge sharing technique, were tested.•Laboratory tests show charge sharing results in high quality spatial resolution.•Test-beam measurements with the full prototype were completed.•It was shown that contributions from several reflections can be distinguished.