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For (a) r = 1 cm, (b) r = 2 cm, (c) r = 3 cm, and (d) r = 5 cm: (Top) Dose measured by each scintillating element (Scint.) together with the calculated expected dose. (Bottom) Accuracy of the measurement. Scint.1 is at z = 0 cm, scint. 2 at z = 2.53 cm, and scint. 3 at z = 4.99 cm.
