Characterisation and calibration of a scintillating fibre detector with   > 4000 multi-anode photomultiplier channels
  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. 
A. Esser, P. Achenbach, C. Ayerbe Gayoso, M. Biroth, P. G\"ulker, J.   Pochodzalla
physics.ins-det