Fig. 4
From: Design and evaluation of electron beam energy degraders for breast boost irradiation
MC beam profiles of the 7 MeV electron beams for six designs. MC beam profiles of 10 × 10 cm2 cone were obtained (a) d max and (b) R 50 for six designs of the energy degrader (ED). MC beam profiles of 15 × 15 cm2 cone were obtained at (c) d max and (d) R 50 for six designs of the ED. An optimal design for 7 MeV beam was selected by considering uniformity of profile at d max and R 50 . ED-4 was the final design for 10 × 10 cm2 and 15 × 15 cm2 cones