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T: Fachverband Teilchenphysik

T 74: Detektoren und Detektorsysteme 2

T 74.5: Vortrag

Mittwoch, 6. März 2013, 17:45–18:00, GER-052

A Single Photon Sensor employing Wavelength-shifting and Light-guiding Technology — •Lukas Schulte, Markus Voge, Sebastian Böser, and Marek Kowalski — Physikalisches Institut, Universität Bonn

In this work we describe a feasibility study of a novel type of single photon sensor that employs organic wavelength shifting materials (WLS) to capture photons and guide them to a PMT readout. Two different WLS materials, Saint Gobain BC-480 and BC-482A, have been tested as candidates for use in such a sensor. We address the photon detection efficiency, noise properties, time and spatial resolution, PMT readout, as well as some practical aspects relevant for the development and construction of a prototype sensor.

Calculating the overall photon detection efficiency, we show that the effective photosensitive area of a prototype built with existing technology could easily exceed that of modules currently used e. g. in IceCube while having a dark noise rate up to two orders of magnitude smaller.