Physics – Medical Physics
Scientific paper
Apr 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006apsp.conf..108t&link_type=abstract
ASTROPARTICLE, PARTICLE AND SPACE PHYSICS, DETECTORS AND MEDICAL PHYSICS APPLICATIONS . Proceedings of the 9th Conference . Held
Physics
Medical Physics
Scientific paper
The detector consisting of the 200×2.5×1cm3 plastic scintillator strip, the wavelength shifting (WLS) fiber and two novel photodetectors called Silicon Photomultipliers (SiPMs) has been constructed and tested. Light yield and light attenuation measurements are presented. More than 13 photons are detected by two SiPMs placed at the fiber ends for cosmic ray particles at normal incidence. This provides >99% efficiency with a small noise rate. SiPM has several advantages over photomultipliers. It is not sensitive to magnetic field and hence light transportation is not required. Its gain is determined easily by observing peaks corresponding to different number of fired SiPM pixels. It is cheaper than one channel in multichannel photomultiplier. A possibility to use such a new technique in the muon systems or calorimeters with tracking information is demonstrated.
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