Fig. 3
a Percentage depth dose curves obtained by measurement and modelling for the Al-target beams for a field size of 20 × 20 cm2 at a source-surface-distance of 100 cm, (b) lateral profiles of measured and modelled for the Al-target beams at a depth of 1.5 cm and field size of 20 × 20 cm2 at a source-surface-distance of 100 cm, the gamma evaluation represented in the inset image