Heidelberg 2007 – scientific programme
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T: Fachverband Teilchenphysik
T 315: Halbleiterdetektoren II
T 315.8: Talk
Wednesday, March 7, 2007, 18:30–18:45, INF 306 SR 14
Back Illuminated Silicon Photomultiplier as Novel Detector for Single Photon Counting — •C. Merck1,4, R. Eckhardt3,4, R. Hartmann3,4, P. Holl3,4, C. Koitsch3,4, G. Lutz3,4, R. Mirzoyan1, H.-G. Moser1,4, J. Ninkovic1,4, R.H. Richter1,4, G. Schaller2,4, F. Schopper2,4, H. Soltau3,4, L. Strüder2,4, M. Teshima1, and G. Valceanu2,4 — 1Max-Planck-Institut für Physik, Föhringer Ring 6, 80805 München, Germany — 2Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, Germany — 3PNSensor GmbH, Römerstrasse 6, 80803 München, Germany — 4MPI Halbleiterlabor, Otto-Hahn-Ring 6, 81739 München, Germany
Single photon counting plays an essential role in astronomical research. In gamma-ray astronomy, the MAGIC telescope detects Cherenkov photons generated in atmospheric air showers. Since the flux of photons is low, the development of new single photon detectors with high quantum efficiency is necessary. The concept of the Back Illuminated Drift Silicon Photomultiplier (BID SiPM) is a novel detector design for single photon counting. It combines the principle of a Silicon Photomultiplier (SiPM) and a drift diode. The BID SiPM is operated as back illuminated detector providing a fill factor of 100%. A high quantum efficiency of about 80% in a wavelength region of 300 - 1000 nm can be achieved. A prototype of avalanche region that can be combined with a drift structure was produced at MPI HLL. The detector concept and results of measurement of dark rate and leakage current are presented. Results of measurements on size of high field region and results of measurement of effect of optical crosstalk are shown.