Figure 6.

(a) Integrated depth–dose curve of 150 MeV protons in water (dose integrated over an area of 100 cm${}^2$). (b) Zoom to the Bragg peak. (c) Zoom to the first 90 mm. (d) Zoom to the first 2 mm while the dose values are normalized to the dose at a depth of 1 mm. The single data points in (d) are connected with lines to guide the eye. No statistical uncertainties are indicated since one standard deviation is smaller than the line width [panels (a)–(c)] or the symbol size [panel (d)]. [Color figure can be viewed at http://www.wileyonlinelibrary.com/]