The experimental setup at the IdeaSquare, CERN was build and calibrated in collaboration with Geneva University for electrical and optical characterisation of various SiPM devices at room temperature.
In the context of SENSE a collaboration between several labs experienced in measuring photosensors was developed and is regulated within a MoU. The aim is to characterize LLL sensors and standardize measurements and analysis procedures. Each lab has slightly different test facilities for the measurement of photosensors so as a first step each platform is characterized and systematic errors relevant for various measurements are compared. By this, doubled efforts characterizing sensors are minimized and common precisions on measured quantities are established. All results should be published jointly under open access.
A Cooperation Agreement for providing a framework for the testing and performance studies of photosensors was developed and all included test facilities will be described in detail below. At the moment the document is signed by the following institutions:
Universitiy of Geneva (UNIGE), Max-Planck-Institut für Physik (MPI), Karlsruhe Institute of Technology (KIT), Deutsches Elektron Synchrotron (DESY), Nagoya University (Nagoya), INAF-Osservatorio Astrofisico di Catania (INAF-CT), University of Heidelberg, Institute for High Energy Physics of Barcelona (IFAE), University of Barcelona ICCUB
The first publication with a comparison of photon detection efficiency and optical crosstalk of various SiPM devices is available here.
If you have any questions about the different facilities, if you want to share your experience in photosensor measurement or if you have a device that should be measured at our test facilities please feel free to directly get in touch with the given contact person or write a post in our forum.
Overview of available test facilities:
At the Nagoya University an experimental setup for the characterization of SiPMs is available using a calibrated SiPM as reference to obtain photon detection efficiencies. A climate chamber provides constant room temperature and eight pulsed LED light sources are available.
The Single PhOton Calibration Stand at KIT, SPOCK, is build to characterize all kind of photosensors like PMTs or SiPMs with highest precision. It consists of a reference light source capable of emitting single photons per pulse, photon shielding and the read-out electronics.
A light emission microscopy (LEM) setup is constructed in the scope of SENSE at the MPI in Munich, specifically to investigate optical cross-talk in SiPMs. LEM allows for the direct measurement of optical cross-talk from the emission of light from the device.