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

作者：Smyrski J^*; Alfs D; Bednarski T; Bialas P; Czerwinski E; Dulski K; Gajos A; Glowacz B; Gupta Sharma N; Gorgol M; Jasinska B; Kajetanowicz M; Kaminska D; Korcyl G; Kowalski P; Krzemien W; Krawczyk N; Kubicz E; Mohammed M; Niedzwiecki Sz; Pawlik Niedzwiecka M; Raczynski L; Rudy Z; Salabura P; Silarski M; Strzelecki A; Wieczorek A; Wislicki W; Wojnarska J; Zgardzinska B; Zielinski M; Moskal P

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2017, 851: 39-42.

DOI：10.1016/j.nima.2017.01.045

• Positron emission tomography
• Wavelength shifter
• Plastic scintillator
• Silicon photomultipliers

The feasibility of measuring the asxial 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 is demonstrated. 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 Na-22 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.

• 出版日期2017-4-11