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

doi:10.1016/j.nima.2017.01.045

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arXiv · 1612.08571

Measurement of gamma quantum interaction point in plastic scintillator with WLS strips

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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.

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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. 2016-12-27. Measurement of gamma quantum interaction point in plastic scintillator with WLS strips. https://doi.org/10.1016/j.nima.2017.01.045

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