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arXiv · 1309.6885

Upgrade of the POLDI diffractometer with a ZnS(Ag)/6LiF scintillation detector read out with WLS fibers coupled to SiPMs

J. -B. Mosset·A. Stoykov·V. Davydov·M. Hildebrandt·H. Van Swygenhoven·W. Wagner
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Abstract

A thermal neutron detector based on ZnS(Ag)/6LiF scintillator, wavelength-shifting fibers (WLS) and silicon photomultipliers (SiPM) is under development at the Paul Scherrer Institute (PSI) for upgrading the POLDI instrument, a pulse-overlap diffractometer. The design of the detector is outlined, and the measurements performed on a single channel prototype are presented. An innovative signal processing system based on a photon counting approach is under development. Its principle of operation is described and its performances are evaluated on the basis of a Monte Carlo simulation.

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J. -B. Mosset, A. Stoykov, V. Davydov, M. Hildebrandt, H. Van Swygenhoven, W. Wagner. 2013-09-26. Upgrade of the POLDI diffractometer with a ZnS(Ag)/6LiF scintillation detector read out with WLS fibers coupled to SiPMs. https://doi.org/10.1088/1742-6596/528/1/012041

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