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arXiv · 1206.3146

Characterisation and calibration of a scintillating fibre detector with > 4000 multi-anode photomultiplier channels

A. Esser·P. Achenbach·C. Ayerbe Gayoso·M. Biroth·P. Gülker·J. Pochodzalla
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Abstract

In the Kaos spectrometer at the Mainz Microtron a high-resolution coordinate detector for high-energy particles is operated. It consists of scintillating fibres with diameters of < 1mm and is read out by > 4000 multi-anode photomultiplier channels. It is one of the most modern focal-plane detectors for magnetic spectrometers world-wide. To correct variations in the detection efficiency, caused by the different gains and the different optical transmittances, a fully automated off-line calibration procedure has been developed. The process includes the positioning of a radioisotope source alongside the detector plane and the automated acquisition and analysis of the detector signals. It was possible to characterise and calibrate each individual fibre channel with a low degree of human interaction.

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A. Esser, P. Achenbach, C. Ayerbe Gayoso, M. Biroth, P. Gülker, J. Pochodzalla. 2012-06-14. Characterisation and calibration of a scintillating fibre detector with > 4000 multi-anode photomultiplier channels. https://doi.org/10.1016/j.nima.2011.11.060

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