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Figure 5: The water-tank-measured, high-energy beam profi le was divided by the water tank measured, low-energy beam profi le and normalized to unity at the isocenter. Likewise, the onboard detector measured highenergy profile was divided by the low-energy profi le, and normalized to unity at the isocenter. Both plots are shown. Vertical error bars of +/- 0.5% were added to the water tank measured normalized plot.

Figure 5: The water-tank-measured, high-energy beam profi le was divided by the water tank measured, low-energy beam profi le and normalized to unity at the isocenter. Likewise, the onboard detector measured highenergy profile was divided by the low-energy profi le, and normalized to unity at the isocenter. Both plots are shown. Vertical error bars of +/- 0.5% were added to the water tank measured normalized plot.