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25 April 2024

» arxiv » 1612.8571

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Measurement of gamma quantum interaction point in plastic scintillator with WLS strips
J. Smyrski ; D. Alfs ; T. Bednarski ; P. Białas ; E. Czerwiński ; K. Dulski ; A. Gajos ; B. Głowacz ; N. Gupta-Sharma ; M. Gorgol ; B. Jasińska ; M. Kajetanowicz ; D. Kamińska ; G. Korcyl ; P. Kowalski ; W. Krzemień ; N. Krawczyk ; E. Kubicz ; M. Mohammed ; Sz. Niedźwiecki ; M. Pawlik-Niedźwiecka ; L. Raczyński ; Z. Rudy ; P. Salabura ; M. Silarski ; A. Strzelecki ; A. Wieczorek ; W. Wiślicki ; J. Wojnarska ; B. Zgardzińska ; M. Zieliński ; P. Moskal ;
Date:	27 Dec 2016
Abstract:	We demonstrated the feasibility of measuring the axial coordinate of a gamma quantum interaction point in a plastic scintillator bar via the detection of scintillation photons escaping from the scintillator with an array of wavelength-shifting (WLS) strips. Using a test set-up comprising a BC-420 scintillator bar and an~array of sixteen BC-482A WLS strips we achieved a spatial resolution of~5,mm~($sigma$) for annihilation photons from a $^{22}$Na isotope. The studied method can be used to improve the spatial resolution of a plastic-scintillator-based PET scanner which is being developed by the J-PET collaboration.
Source:	arXiv, 1612.8571
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