Research Article

A New Technology for Fast Two-Dimensional Detection of Proton Therapy Beams

Figure 12

Pulses produced by the range modulator wheel at six different depths in water averaged over one second intervals. In order of increasing width, the pulses were taken from the data in Figure 11 at time 0, 51, 130, 190, and 237 s, corresponding to water-equivalent depths of 17.9, 17.2, 16.2, 15.4, and 14.8 cm, respectively.
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