KIP-Veröffentlichungen

The analogue hadronic calorimeter for the International Linear Collider, developed by the CALICE Collaboration, uses novel silicon pixel-detectors (Silicon Photomultipliers) for the readout of small organic scintillator tiles. In the work presented here, a test-setup has been developed which allows to measure and compare the properties of these sensors. Besides the basic characterisation of the devices, the setup features a measurement of the Photon-Detection-Efficiency over a wide spectral range. Further it is possible to systematically study the overall device uniformity by illumination of small areas of the sensor, using a pulsed light-source. Results of these measurements for different sensor-models are presented and compared. In addition, measurements of the device response and of pixel to pixel cross-talk, performed with a CW laser beam will be discussed.