Fig. 1
From: Methodology paper: a novel phantom setup for commissioning of scanned ion beam delivery and TPS
a The anthropomorphic head fixed with a thermoplastic mask to the entrance window of the water tank for irradiation with a horizontal beam. b Same setup for the PMMA double wedge phantom with a 30° (lower half) and 60° inclination (lower half). The block of 24 ionization chambers can be seen to the right of the wedge in water