FIGURE 3.

Depicts 16 MeV FLASH and conventional electron (a) percent depth dose curves for 6 × 6 cm2 applicator with 2 cm diameter circular cutout (left) and 6 × 6 cm2 applicator (right), and (b) relative cross‐plane profiles at 3‐cm depth for 6 × 6 cm2 applicator with 2 cm diameter circular cutout, 6 × 6 cm2 applicator, 10 × 10 cm2 applicator, and 15 × 15 cm2 applicator.