Tests Of A Scintillating-Fibre Tracking Detector Based On Position-Sensitive Photomultiplier Readout

F Bosi,A Cardini,V Cavasinni,B Di Girolamo,S.I Dolinsky,V Flaminio,A.M Gorin,I.V Manuilov,D Rizzi,R Ruberti,A.A Salnikov,M Tareb-Reyes

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT（1996）

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Abstract

We report the results of measurements performed using a tracking detector based on 835 mu m scintillating fibres read out by two position-sensitive photomultipliers. A six-layer hodoscope consisting of 1.2 m long fibres has been built and tested using cosmic rays. Subsequently, two such hodoscopes have been assembled and tested using a hadron beam at the CERN PS. The efficiency per plane is found to be about 70% and the point resolution about 130 mu m. The signal-to-noise ratio is about 2.4 and is dominated by crosstalk in the position-sensitive photomultipliers.

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Key words

signal to noise ratio,cosmic ray

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