Fig. 4From: Efficiency determination of J-PET: first plastic scintillators-based PET scannerLeft panel shows the experimental setup. The source chamber was aligned in the center of the J-PET tomograph. The upper part of the right panel shows the zoomed version of the source chamber and its preparation. The bottom part describes the schematic of the target chamber with dimensions (in mm). The red color in the center of the small cylinder represents the position of the sourceBack to article page